MAIN TECTONIC ACTIVITIES IN 2011

Mount PAPANDAYAN (Wikipedia)

click here to open activity history

year	begin	alert level	end	Smithsonioan inst./USG activity reports:
2012	JAN- 31		FEB- 07?	CVGHM lowered the Alert Level for Papandayan from 3 to 2 (on a scale of 1-4) on 31 January. No eruption details or reasons for the change were given in the report.
2011	AUG- 26		AUG- 30?	On 26 August CVGHM reported that Papandayan showed minor to no changes in recent seismicity, deformation, geochemistry, and visual observations; therefore the Alert Level remained at 3 (on a scale of 1-4). Seismicity remained high, but stable, and was dominated by shallow volcanic earthquakes. Deformation measurements showed no change, and water temperatures in multiple fumarolic areas and lakes remained relatively unchanged. Sulfur dioxide gas emissions decreased from 8 tons per day on 12 August to 6 tons per day on 23 August. Carbon dioxide in the soil at a 1 m depth in multiple areas did not increase. Visitors and residents were advised not to venture within 2 km of the active crater.

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">Khao Lak webcam

Phuket- Marina Beach

-2- -3-

134- GAMKONORA- MAY- 03- 2011

134- GAMKONORAlatest activity history :						Google Earth >
last known activity status>			last update/USGS	MAY- 10- 2011		unknown
ABOUT GAMKONORA : (Geologic Summary by global volcanism program( Smithsonian inst): . The shifting of eruption centers on Gamkonora, at 1635 m the highest peak of Halmahera, has produced an elongated series of summit craters along a N-S trending rift. Youthful-looking lava flows originate near the cones of Gunung Alon and Popolojo, south of Gamkonora. Since its first recorded eruption in the 16th century, Gamkonora has typically produced small-to-moderate explosive eruptions. Its largest historical eruption, in 1673, was accompanied by tsunamis that inundated villages. latest activity report , APR- 27- MAY- 03- 2011- by: Smithsonioan inst/ wor ld volcanism program): CVGHM reported that during January-April diffuse white plumes from Gamkonora rose 25-100 m above the crater rim. Seismicity increased during 29 April-3 May. On 1 May, white plumes rose 150 m above the crater rim. The next day, white plumes rose 300 m above the crater rim and incandescence from the crater was observed. Residents near the volcano's base noted a sulfur smell. The Alert level was raised to 2 (on a scale of 1-4).
local survey:				PHIVOLCS
latest eruption history (2010)				Media reports		videos:
year	begin	alert level	end	Deutsch	Engl	English	other
2011	APRIL- 29	eruptive	MAY- 04?	CVGHM reported that during January-April diffuse white plumes from Gamkonora rose 25-100 m above the crater rim. Seismicity increased during 29 April-3 May. On 1 May, white plumes rose 150 m above the crater rim. The next day, white plumes rose 300 m above the crater rim and incandescence from the crater was observed. Residents near the volcano's base noted a sulfur smell. The Alert level was raised to 2 (on a scale of 1-4).

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M 6.7 - NEGROS- CEBU REG, PHILIPPINES - 2012-02-06 03:49 UTC

121- LOKON EMPUNG ( IND)- MAY 01- 2012

121 LOKON-EMPUNGlatest activity history :

last known activity status>

last update

May 08- 2012:

unknown( no report)

ABOUT LONKON EMPUNG : ( Geological summary by globyl volcanism program/ Smithsonian/USGS: The twin volcanoes Lokon and Empung, rising about 800 m above the plain of Tondano, are among the most active volcanoes of Sulawesi. Lokon, the higher of the two peaks (whose summits are only 2.2 km apart) has a flat, craterless top. The morphologically younger Empung volcano has a 400-m-wide, 150-m-deep crater that erupted last in the 18th century, but all subsequent eruptions have originated from Tompaluan, a 150 x 250 m wide double crater situated in the saddle between the two peaks. Historical eruptions have primarily produced small-to-moderate ash plumes that have occasionally damaged croplands and houses, but lava-dome growth and pyroclastic flows have also occurred.

last activity report- APRIL 26 - MAY 01 - 2012 by:

Smithsonioan inst/ world volcanism program):

According to the Darwin VAAC, ash plumes from Lokon-Empung, that rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted 75 km N, were detected in satellite imagery and reported by ground-based observers.

local survey:

PHIVOLCS

Huffington Post- 20111026

click here to open activity history

year	begin	alert level	end	reports (Smithsonioan inst.)
2012	APR-24		update	CVGHM reported that during the morning on 24 April diffuse white plumes rose 25-50 m above Tompaluan crater, in the saddle between the Lokon-Empung peaks. Later that day an eruption was accompanied by loud "thumping" noises heard at local observation posts, though fog prevented views of the crater. The next day diffuse white plumes rose 50-100 m above the crater. The Alert Level remained at 3 (on a scale of 1-4).
2012	FEB- 10		FEB 14?	According to news articles, an explosion from the Tompaluan crater, in the saddle between the Lokon-Empung peaks, produced an ash plume that rose as high as 2 km above the crater on 10 February; loud "thumping" noises were also heard. Based on information from CVGHM, the Darwin VAAC reported ash plumes that rose to altitudes of 3-3.4 km (10,000-11,000 ft) a.s.l. during 10-12 February, though clouds prevented the detection of ash in satellite imagery.
2011	DEC- 27		JAN- 03- 2012?	According to a news article, three explosions from the Tompaluan crater, in the saddle between the Lokon-Empung peaks were recorded by the CVGHM on 27 December. CVGHM recorded 23 deep volcanic tremors and 40 shallow volcanic tremors. Residents and tourists were not permitted within a 2.5 km radius of the crater. Based on visual and seismic observations during 27-28 December, the Alert Level remained at 3 (on a scale of 1-4). The Darwin VAAC reported a low-level eruption on 27 December based on media reports.
2011	OCT- 26		NOV- 03?	According to a news article, a gray plume rose 1.2 km above Tompaluan crater, in the saddle between the Lokon-Empung peaks, and drifted SW on 26 October, followed by an explosion that sent incandescent material as far as 800 m away from Tompaluan crater. A second eruption produced a plume that rose 500 m above the crater.
2011	OCT- 11		Oct- 17?	CVGHM reported that on 10 October white and gray plumes rose 100-300 m above Tompaluan crater, in the saddle between the Lokon-Empung peaks. Based on information from CVGHM, the Darwin VAAC reported that on 11 October an ash plume rose to an altitude of 2.1 km (7,000 ft) a.s.l. The Alert Level remained at 3 (on a scale of 1-4).
2011	AUG- 28		AUG- 30?	According to a news article, activity from Tompaluan crater, in the saddle between the Lokon-Empung peaks, decreased on 29 August after erupting several times the previous week and specifically 12 times on 28 August. One explosion on 29 August ejected material 250 m above the crater. The article also noted that 222 people remained at temporary refugee camps because their homes were located within 3 kilometers of the crater.
2011	JUNE- 26		ongoing in intervals	CVGHM reported that during 1-25 June white plumes rose 50-200 m above Tompaluan crater, in the saddle between the Lokon-Empung peaks. On 26 June a phreatic eruption ejected material that fell around the crater and produced a gray plume that rose 400 m above the crater rim and drifted N. Seismicity increased the next day and white plumes rose 50-200 m above the crater. The Alert Level was raised to 3 (on a scale of 1-4). Visitors and residents were prohibited from going within a 3-km radius of the crater.
2011	FEB- 23		March- 01?	According to news articles, a phreatic eruption from Tompaluan crater, in the saddle between the Lokon-Empung peaks, produced an ash plume that rose 400 m above the crater rim and drifted SE on 22 February.

reports and videos:

131 DUKONO (PHI) MAY- 08- 2012

131 DUKONO-latest activity history :

last update:

MAY 08- 2012

unknown*

last activity report - MAY 01 -08 2012 by:

Smithsonian inst/ world volcanism program):

ongoing activity with interuptions

*= "unknown" means: There was no further report by USGS

local volcano survey:

click here to open activity history

Inhalt

year	begin	alert level	end	Smithsonioan inst./USG activity reports:
2012	MAY-08		May-15?	Based on analyses of satellite imagery, the Darwin VAAC reported that during 8-9 May ash plumes from Dukono rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 75 km SE
2012	JAN- 30		FEB. 07?	Based on analyses of satellite imagery, the Darwin VAAC reported that during 30-31 January ash plumes from Dukono rose to an altitude of 2.7 km (9,000 ft) a.s.l. and drifted 220 km SW.
2011	AUG- 18		intervalled	Based on analyses of satellite imagery, the Darwin VAAC reported that during 18-21 August ash plumes from Dukono rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 110-150 km NE and N.
2011	AUG- 11		AUG- 17	According to a news article, activity at Dukono has continued to increase. On 11 August ash explosions were audible within a radius of about 7 km from the base of the volcano. Ash was ejected as high as 1 km above the crater, producing plumes that drifted E and S, and also approached Tobelo City (14 km ENE). Seismographs at the Dukono observation post recorded more than 100 eruption earthquakes. Based on analyses of satellite imagery, the Darwin VAAC reported that on 11 and 14 August ash plumes rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 93 km NW.
2011	JULY- 01		July- 12?	Based on analyses of satellite imagery, the Darwin VAAC reported that on 1 July an ash plume from Dukono rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 110 km E.
2011	JUN E- 01		June- 07?	Based on analyses of satellite imagery, the Darwin VAAC reported that on 1 June an ash plume from Dukono rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 110 km NE.
2011	APRIL 21		MAY- 24?	Based on analyses of satellite imagery, the Darwin VAAC reported that during 21-22 April ash plumes from Dukono rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted less than 85 km NE and E.
2011	APR- 04		APR- 05?	Based on analyses of satellite imagery, the Darwin VAAC reported that on 4 April an ash plume from Dukono rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 185 km E.
2011	MAR 01		MAR 21
2011	JAN- 05		ongoing with interuptions	Based on analyses of satellite imagery, the Darwin VAAC reported that during 5-7 January ash plumes from Dukono rose to altitudes of 2.4-3.7 km (8,000-12,000 ft) a.s.l. and drifted 65-130 km W.

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Dukono

35-(PHI) MAYON-(PHI) JUNE- 15- 2011

25- MAYONlatest activity history :						Google Earth >
last known activity status>			last update ( USGS):	JUNE- 22- 2011		unknown
ABOUT MAYON : (Geologic Summary by global volcanism program( Smithsonian inst): Beautifully symmetrical Mayon volcano, which rises to 2,462 m above the Albay Gulf, is the Philippines' most active volcano. The structurally simple volcano has steep upper slopes that average 35-40° and is capped by a small summit crater. The historical eruptions of this basaltic-andesitic volcano date back to 1616 and range from Strombolian to basaltic Plinian. Eruptions occur predominately from the central conduit and have also produced lava flows that travel far down the flanks. Pyroclastic flows and mudflows have commonly swept down many of the approximately 40 ravines that radiate from the summit and have often devastated populated lowland areas. Mayon's most violent eruption, in 1814, killed more than 1,200 people and devastated several towns. Eruptions that began in February 2000 led PHIVOLCS to recommend on 23 February 2000 the evacuation of people within a radius of 7 km from the summit in the SE and within a 6 km radius for the rest of the volcano last activity report- JUNE- 08- 15- 2011 by: Smithsonian inst/ world volcanism program): PHIVOLCS reported that a deformation survey of Mayon conducted during 31 May-4 June showed slight inflation since a 6-10 March survey. White steam emitted from the summit crater during 8-13 June crept down the NW and WNW flanks. Incandescence from the crater was also observed. The Alert Level remained at 1 and the public was reminded not to enter the 6-km-radius Permanent Danger Zone (PDZ).
local survey:				PHIVOLCS
latest eruption history (2010)				Media reports		videos:
year	begin	alert level	end	Deutsch	Engl	English	other
2011	MAY- 31		JUNE- 15?	PHIVOLCS reported that a deformation survey of Mayon conducted during 31 May-4 June showed slight inflation since a 6-10 March survey. White steam emitted from the summit crater during 8-13 June crept down the NW and WNW flanks. Incandescence from the crater was also observed. The Alert Level remained at 1 and the public was reminded not to enter the 6-km-radius Permanent Danger Zone (PDZ).
2011	JAN-25		FEB- 02?	PHIVOLCS reported that a deformation survey of Mayon conducted in November and December 2010 showed inflation since a survey in 2008. During 18-25 January, up to two daily volcanic earthquakes were detected by the seismic network. Although cloud cover often prevented observations of the summit area, white steam emissions from the crater and nighttime crater incandescence were occasionally observed. The Alert Level remained at 1 and the public was reminded not to enter the 6-km-radius Permanent Danger Zone (PDZ).

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RECENTLY ACTIVE VOLCANOES (SINCE 2011):

72- TENGGER CALDERA ( IND) APRIL 03- 2012

72 TENGGER CALDERA

last update:

APRIL 10-2012

unknown

last activity report- MARCH 28- APRIL 03 - 2012 by:

by Smithsonian institute

This volcano is active in intervals

local survey:

TENGGER CALDERA ( WIkipedia)

click here for latest activity history

Inhalt

year	begin	alert level	end	last status	GVP activity reports
2012	APR 03		update		CVGHM reported that during 1 January-29 March white plumes from Tengger Caldera's Bromo cone rose 50 m above the crater and seismicity declined. On 30 March the Alert Level was lowered to 1 (on a scale of 1-4).
2011	APR- 27		---		Based on analyses of satellite imagery, the Darwin VAAC reported that on 27 April an ash plume from Tengger Caldera's Bromo cone rose to an altitude of 4.3 km (14,000 ft) a.s.l. and drifted about 75 km WSW. On 2 May an ash plume rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted about 75 km N.
2011	MAR-18		APR- 05		CVGHM reported that on 10 March ash from Tengger Caldera's Bromo cone fell in areas to the E and NE, including in the Probolinggo district (35 km NE). During 18-20 March gray-to-brown ash plumes rose 400-800 m above the crater and drifted SE. Incandescent material was ejected 300 m above the crater and landed up to 500 m away. Roaring and booming noises were also noted. The Alert Level remained at 3 (on a scale of 1-4). Residents and tourists were not permitted within a 2-km radius of the active crater. Based on analyses of satellite imagery and information from CVGHM, the Darwin VAAC reported that during 18-20 March ash plumes rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 27-150 km NW, SW, and S.
2011	FEB- 08		FEB- 22		CVGHM reported that during 8-9 February gray-to-brown ash plumes from Tengger Caldera's Bromo cone rose 400-800 m above the crater and drifted E. Incandescent material was ejected 300 m above the crater and landed as far as 500 m away, and roaring and booming was heard. Ash fell at the Bromo observation post on 8 February. The Alert Level remained at 3 (on a scale of 1-4). Residents and tourists were not permitted within a 2-km-radius of the active crater. GHM reported that during 17-18 February brownish gray ash plumes from Tengger Caldera's Bromo cone rose 400-800 m above the crater and drifted ENE. Incandescent material was ejected 300 m above the crater and landed as far as 500 m away, and roaring and booming was heard. The Alert Level remained at 3 (on a scale of 1-4). Residents and tourists were not permitted within a 2-km-radius of the active crater.
2011	JAN- 23		FEB-05		CVGHM reported that during 22-23 January gray-to-brown plumes from Tengger Caldera's Bromo cone rose 400-800 m above the crater and drifted E. Incandescent material was ejected 200 m above the crater and landed as far as 500 m away on 22 January. The Alert Level remained at 3 (on a scale of 1-4). Residents and tourists were not permitted within a 2-km-radius of the active crater. Based on analysis of satellite imagery and information from CVGHM, the Darwin VAAC reported that on 24 January an ash plume rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted more than 220 km E. A high concentration of sulfur dioxide in the area was also detected
2010	Dec-30
2010	Dec 20	red	DEC- 30-
2010	NOV 23	red	DEC- 12		the historical Tengger Caldera is part of a larger massive volcano system extending from Semeru. On NOV- 23 , steam and smoke began to rise out of the historical TENGGER CALDERA. On Nov- 23 the global volcanism program ( USGS/ Smithsonian inst) raised the volcano caldera`s alert level to red ( level 4)

Media reports

videos:

M 7.7- OCT- 26- 2010-19:37 UTC

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magnitude

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datalink:

videos

2010-10-25 14:42 UTC

- 2010-10-25 19:37 UTC

SEA- QUAKE, triggering a Tsunami

-OFFSHORE KEP. MENTAWAI REGION, INDONESIA

7.7 several strong afterquakes

10 km

3 (TSUNAMI)

57-DIENG VOLCANIC COMPLEX- JUNE- 15- 2011-

57- DIENG VOLCANIC COMPLEX-							Google Earth >
last known status>				last update:	JUNE- 22-2011		unknown
ABOUT DIENG VOLCANIC COMPLEX ( geological summary by global volcanism program/ USGS): The Dieng plateau in the highlands of central Java is renowned both for the variety of its volcanic scenery and as a sacred area housing Java's oldest Hindu temples, dating back to the 9th century AD. The Dieng volcanic complex consists of two or more stratovolcanoes and more than 20 small craters and cones of Pleistocene-to-Holocene age over a 6 x 14 km area. Prahu stratovolcano was truncated by a large Pleistocene caldera, which was subsequently filled by a series of dissected to youthful cones, lava domes, and craters, many containing lakes. Lava flows cover much of the plateau, but have not occurred in historical time, when activity has been restricted to minor phreatic eruptions. Toxic volcanic gas emission has caused fatalities and is a hazard at several craters. The abundant thermal features that dot the plateau and high heat flow make Dieng a major geothermal prospect. last activity report- JUNE- 08- 15- 2011 by: Smithsonian institute VGHM reported that during 31 May-10 June carbon dioxide gas emissions declined from Timbang, a cone that is part of the Dieng Volcanic Complex. Seismicity decreased during 5-7 June and was not detected during 8-10 June. White plumes were not observed. On 10 June the Alert Level was lowered to 2 (on a scale of 1-4).
local survey:					CVGHM
latest eruption history (2010)					Media reports		videos:
year	begin	alert level	end	last status	Deutsch	Engl	English	other
2011	MAY- 22		JUNE- 15?		CVGHM reported that during 18-22 May seismicity at Dieng Volcanic Complex increased. On 22 May diffuse white plumes rose 20 m from the Timbang cone; plumes from the cone had not been previously observed. The next day carbon dioxide gas emissions increased. CVGHM raised the Alert Level to 2 (on a scale of 1-4).
img.

27- KABA ( SUM)- JULY- 19- 2011

27- KABA - (Sumatra)						Google Earth >
last known activity status>			last update/ USGS :	JULY-26- 2011		unknown
ABOUT KABA : ( Geological summary by globyl volcanism program/ Smithsonian/USGS: last activity report- July 05-12- 2011, provided by: Smithsonioan inst/ world volcanism program): On 14 July CVGHM reported that, since the Alert Level for Kaba was raised on 20 October 2009, seismicity had fluctuated but decreased overall. During September 2009-May 2011, when weather permitted, white plumes were seen rising 25-300 m above the crater rim, and during June-July 2011 diffuse white plumes rose 50 m above the crater rim. The Alert Level was lowered to 1 (on a scale of 1-4) on 12 July.
local survey:				PHIVOLCS		VAAC
latest eruption history (2010)				reports and videos:
year	begin	alert level	end	Deutsch	Engl	English	other
2011	?		July-20?	On 14 July CVGHM reported that, since the Alert Level for Kaba was raised on 20 October 2009, seismicity had fluctuated but decreased overall. During September 2009-May 2011, when weather permitted, white plumes were seen rising 25-300 m above the crater rim, and during June-July 2011 diffuse white plumes rose 50 m above the crater rim. The Alert Level was lowered to 1 (on a scale of 1-4) on 12 July.

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18- MARAPI (SU)- MARCH 13 - 2011

18- MARAPI (SUMATRA)

last known activity status>

last update/ USGS :

MARCH- 20- 2011

unknown

ABOUT MARAPI- Sumatra : ( Geological summary by global volcanism program/ Smithsonian/USGS: Gunung Marapi, not to be confused with the better-known Merapi volcano on Java, is Sumatra's most active volcano. Marapi is a massive complex stratovolcano that rises 2000 m above the Bukittinggi plain in Sumatra's Padang Highlands. A broad summit contains multiple partially overlapping summit craters constructed within the small 1.4-km-wide Bancah caldera. The summit craters are located along an ENE-WSW line, with volcanism migrating to the west. More than 50 eruptions, typically consisting of small-to-moderate explosive activity, have been recorded since the end of the 18th century; no lava flows outside the summit craters have been reported in historical time.

last activity report- MARCH 07- 13- 2012 by:

Smithsonioan inst/ world volcanism program):

According to a news article from 5 March, several eruptions from Marapi produced ash plumes during the previous week. An ash plume rose 1 km above the crater on 4 March and drifted 10 km S. A representative from CVGHM noted that the Alert Level remained at 2 (on a scale of 1-4).

activity continued in intervals

local survey:

click here to open activity history

Inhalt

year	begin	alert level	end	Smithsonioan inst/ activity reports
2012	MAR- 05		MAR- 20?	According to a news article from 5 March, several eruptions from Marapi produced ash plumes during the previous week. An ash plume rose 1 km above the crater on 4 March and drifted 10 km S. A representative from CVGHM noted that the Alert Level remained at 2 (on a scale of 1-4).
2011	OCT- 11		Oct- 18	Based on a pilot report, the Darwin VAAC reported that on 11 October an ash plume from Marapi rose to an altitude of 3.7 km (12,000 ft) a.s.l. Ash was not identified in satellite imagery.
2011	AUGUST-01		Aug- 09	CVGHM reported increased seismicity from Marapi during 21 June-3 August. Observers noted that during June and July white plumes rose 15-75 m above the summit craters. On 1 August white plumes rose 15 m above the main crater; fog prevented observations the next day. On 3 August dense gray plumes rose 300-1,000 m above the crater on eight occasions. That same day CVGHM raised the Alert Level to 2 (on a scale of 1-4). Visitors and residents were prohibited from going within a 3-km radius of the summit.

reports and videos:

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Engl

English

other

image: USGS

133- IBU (INDO. )- SEP- 13- 2011

133- IBU (Indonesia/ Halmahera)				Google Earth >
last known status:			date:	SEP- 20 -2011		unknown
about/ by: global volcanism program) About IBU by:Smithsonian/ USGS- global volcanism program:The truncated summit of Gunung Ibu stratovolcano along the NW coast of Halmahera Island has large nested summit craters. The inner crater, 1 km wide and 400 m deep, contained several small crater lakes through much of historical time. The outer crater, 1.2 km wide, is breached on the north side, creating a steep-walled valley. A large parasitic cone is located ENE of the summit. A smaller one to the WSW has fed a lava flow down the western flank. A group of maars is located below the northern and western flanks of the volcano. Only a few eruptions have been recorded from Ibu in historical time, the first a small explosive eruption from the summit crater in 1911. An eruption producing a lava dome that eventually covered much of the floor of the inner summit crater began in December 1998.
last activity report- SEP- 07- 13 - 2011 by: (by: Smithsonian/USGS- golbal volcanism program CVGHM reported mostly clear conditions at Ibu during January-8 September and that white-to-gray plumes were observed rising 200-400 m above the craters. On 20 August observers from the nearby villages of Goin and Duono noted multiple eruptions from the S, E, and N craters. Eruption "smoke" rose 50-250 m above the craters and an avalanche traveled 300 m. Seismicity indicating avalanches occurred on average 45 times per day during January-8 September. Other types of seismic signals fluctuated during the time period but stabilized or decreased towards September. Based on visual observations and seismicity, CVGHM lowered the Alert Level to 2 (on a scale of 1-4) on 8 September.
local links/ survey			VAAC
last eruption:				loc.	link	other
year	begin	status	end
2011	SEP- 08		Sep- 13?	CVGHM reported mostly clear conditions at Ibu during January-8 September and that white-to-gray plumes were observed rising 200-400 m above the craters. On 20 August observers from the nearby villages of Goin and Duono noted multiple eruptions from the S, E, and N craters. Eruption "smoke" rose 50-250 m above the craters and an avalanche traveled 300 m. Seismicity indicating avalanches occurred on average 45 times per day during January-8 September. Other types of seismic signals fluctuated during the time period but stabilized or decreased towards September. Based on visual observations and seismicity, CVGHM lowered the Alert Level to 2 (on a scale of 1-4) on 8 September.
IBU

138- GAMALAMA- JAN- 31- 2012

136- GAMALAMA ( IND- Halmahaera)

GAMALAMA

last update:

FEBRUARY- 07- 2012:

unknown

last activity report- JANUARY 25- 31- 2012 by:

Smithsonian inst/ world volcanism program):

ongoing activity with interuptions

local volcano survey:

click here to open activity history

Inhalt

year	begin	alert level	end	GVP reports:
2012	JANUARY- 24		JAN- 31?	CVGHM lowered the Alert Level for Gamalama from 3 to 2 (on a scale of 1-4) on 24 January based on visual observations of white plumes rising as high as 100 m above the crater and a decrease in seismicity since the last eruption on 23 December 2011.
2011	DECEMBER 04		JAN- 03- 2012?	According to news articles, at least three people were killed and 1,000-2,600 more from several villages were displaced by lahars from Gamalama during on 27-28 December. The lahars destroyed many homes in the Tubo and Tofure villages and along the Togorara and Marikurubu rivers. The Alert Level remains at 3 (on a scale from 1-4).

GAMALAMA ( Wikipedia)

37- KRAKATAU- JAN- 31- 2012

-37 KRAKATAU - latest activity history :

last update:

FEBRUARY- 07- 2012

unknown

last activity report- JANUARY 25- 31- 2012 by:

global volcanism program Smithsonian institute-

CVGHM lowered the Alert Level for Anak Krakatau from 3 to 2 (on a scale of 1-4) on 26 January. No details or reasons for the change were given in the report.

local survey:

Krakatau eruption January 2011

NASA Earth Observatory

click here to open recent activity history

year	begin	alert level	end	Deutsch	Engl	English	other
2012	JAN- 26		JAN- 31?	CVGHM lowered the Alert Level for Anak Krakatau from 3 to 2 (on a scale of 1-4) on 26 January. No details or reasons for the change were given in the report.
2011	SEP- 30		Oct- 11?	VGHM reported that seismicity from Anak Krakatau in 2011, as late as 10 July, consisted of 20-30 volcanic-earthquake events per day and shallow events ranged from 120 to 135 events per day. Hundreds of events per day were detected during swarms. On 10 July, the seismic equipment was damaged by Krakatau's activity but was again operational in mid-September. During 18-30 September seismic events reached 4-5 events per minute. Visual observations in 2011 until 13 September indicated occasional explosive eruptions that would eject material and produce ash plumes. During 14-30 September fumarolic activity from the crater and in the fumarolic fields was visible. The Alert Level was increased to 3 (on a scale of 1-4) on 30 September based on an increase in seismic activity and widespread fumarolic activity.
2011	JULY-31		AUG- 09?	A satellite image acquired on 31 July showed a diffuse ash plume rising from Anak Krakatau and drifting W. Geologic Summary. Renowned Krakatau volcano lies in the Sunda Strait between Java and Sumatra. Collapse of the ancestral Krakatau edifice, perhaps in 416 AD, resulted in a 7-km-wide caldera. Remnants of this volcano formed Verlaten and Lang Islands; subsequently Rakata, Danan and Perbuwatan volcanoes were formed, coalescing to create the pre-1883 Krakatau Island. Caldera collapse during the catastrophic 1883 eruption destroyed Danan and Perbuwatan volcanoes, and left only a remnant of Rakata volcano. The post-collapse cone of Anak Krakatau (Child of Krakatau), constructed within the 1883 caldera at a point between the former cones of Danan and Perbuwatan, has been the site of frequent eruptions since 1927.
2011	JAN 12		Jan 18?	Based on information from CVGHM, the Darwin VAAC reported that on 12 January an eruption plume from Anak Krakatau rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted SE. Meteorological clouds prevented observations of the area from satellite. On 15 January, a pilot observed a plume that rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 18-28 km E.
2010	NOV28	unknown	DEC 23
2010	NOV 22	yellow	NOV 27
2010	OCT 29	red	Nov 02

reports and videos:

Deutsch

Engl

youtube

o. video

Krakatau-wikipedia

no video available yet from the eruptions after September 2011.

1883

May- 20

105- BATU TARA- MAY 09-- 2011

105- BATU TARA

(by: Smithsonian/USGS- global volcanism program

last known status:

date:

MAY- 15 -2011

unknown*

about BATU TARA/ by: global volcanism program)

last activity report - MAY 01 -08 2012 by:

local links/ survey

87- RANAKAH - Sundra Islands

click here to open latest activity history

Inhalt

year	begin	status	end	activity reports by global volcanism program)
2012	APR- 26		May-08?	Based on analyses of satellite imagery, the Darwin VAAC reported that during 25-26 April ash plumes from Batu Tara rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 37 km W and SW. During 30 April-1 May ash plumes again rose to an altitude of 2.4 km (8,000 ft) a.s.l. then drifted 37-55 km NW. Geologic Summary. The small isolated island of Batu Tara in the Flores Sea about 50 km north of Lembata (formerly Lomblen) Island contains a scarp on the eastern side similar to the Sciara del Fuoco of Italy's Stromboli volcano. Vegetation covers the flanks of Batu Tara to within 50 m of the 748-m-high summit. Batu Tara lies north of the main volcanic arc and is noted for its potassic leucite-bearing basanitic and tephritic rocks. The first historical eruption from Batu Tara, during 1847-52, produced explosions and a lava flow.
2011	OCT- 27		Nov- 02?	Based on analyses of satellite imagery, the Darwin VAAC reported that on 27 October an ash plume from Batu Tara rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted about 45 km W.
2011	SEP- 08		SEP- 27?	Based on analyses of satellite imagery, the Darwin VAAC reported that during 21-24 September ash plumes from Batu Tara rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted 37-65 km W, WNW, and NW.
2011	AUG- 23		AUG- 30?	Based on analyses of satellite imagery, the Darwin VAAC reported that during 23-30 August ash plumes from Batu Tara rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted 20-90 km N, NW, and W.
2011	APRIL- 28		July 12?	Based on analyses of satellite imagery, the Darwin VAAC reported that during 28 April-3 May ash plumes from Batu Tara rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 10-130 km N, NW, W, and SW.
2011	MAR- 20		MAR- 21?	Based on analyses of satellite imagery, the Darwin VAAC reported that on 20 March an ash plume from Batu Tara rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted less than 30 km NE.

loc.

link

other

BATU TARA

77- IJEN (INDO/Java) MAY- 15- 2012 (update)

77- IJEN ( Java)					Google Earth >
last known status>				MAY- 15- 2012
About IJEN ( geological summary by global volcanism program/ USGS): The Ijen volcano complex consists of a group of small stratovolcanoes constructed within the large 20-km-wide Ijen (Kendeng) caldera. The N caldera wall forms a prominent arcuate ridge, but elsewhere the caldera rim is buried by post-caldera volcanoes, including Gunung Merapi stratovolcano, which forms the 2,799 m high point of the Ijen complex. Immediately W of Gunung Merapi is the renowned historically active Kawah Ijen volcano, which contains a nearly 1-km-wide, turquoise-colored, acid crater lake. The picturesque lake is the site of a labor-intensive sulfur mining operation, in which sulfur-laden baskets are hand-carried from the crater floor. A half dozen small-to-moderate phreatic eruptions have taken place from Kawah Ijen during the 20th century. last activity update - MAY- 09- 15- 2012 by: by Smithsonian institute CVGHM reported that during 1-30 April white plumes from Ijen rose 100-200 m above the crater; during 1-11 May diffuse white plumes rose 50-100 m. From the beginning of April until 13 May the amplitude and number of earthquakes gradually decreased and the crater lake water temperature decreased by eight degrees Celsius. The Alert Level was lowered to 2 (on a scale of 1-4) on 13 May. the last known eruption of IJEN was 1999
local survey:				CVGHM
latest eruption history (2010)				Media reports	videos:
year	begin	alert level	end	activity reports
2012	update
2012	MAR- 12		MAR 27?	CVGHM raised the Alert Level for Ijen from 2 to 3 (on a scale of 1-4) on 12 March because of increased seismicity and visual observations. On 10 March scientists observed some plant damage around the crater lake and a 10-m-wide area of disrupted water on the crater-lake surface.
2012	FEB- 08		FEB 14?	CVGHM lowered the Alert Level for Ijen from 3 to 2 (on a scale of 1-4) on 8 February based on decreased seismicity and visual observations of white plumes rising as high as 300 m above the crater. In addition, a decrease in lake water temperature was measured, which ranged from 42 degrees Celsius on 20 January to 37 degrees on 2 February.
2011	DEC- 19		>contin.	CVGHM reported that during 1 October-30 November white plumes from Ijen rose 50-150 m above the crater and lake water temperatures ranged from 26 to 31.6 degrees Celsius. During 1-14 December brownish-white plumes rose 50-200 m above the crater. The lake water temperature was 26.8 and 34.2 degrees Celsius on 8 and 14 December, respectively. Based on increased seismicity, visual observations, and lake water temperature increases, CVGHM raised the Alert Level from 1 to 2 (on a scale of 1-4). During 15-17 December seismicity significantly increased and sulfur dioxide gas emissions around the lake also increased. On 17 December the color of the lake water changed from light green to white. The Alert Level was raised to 3 the next day.
2011	JULY- 10		July- 12?	The Darwin VAAC reported that on 10 July a pilot observed an ash plume drifting W from Ijen at an altitude of 3.7 km (12,000 ft) a.s.l.
img. IJEN (wikipedia)

56- SLAMET ( IND( Java)- JULY- 12- 2011

56- SLAMET ( IND/ Java)							Google Earth >
last known status>				last update:	JULY- 19-2011		unknown
About SLAMET ( geological summary by global volcanism program/ USGS): Slamet, Java's second highest volcano at 3428 m and one of its most active, has a cluster of about three dozen cinder cones on its lower SE-NE flanks and a single cinder cone on the western flank. Slamet is composed of two overlapping edifices, an older basaltic-andesite to andesitic volcano on the west and a younger basaltic to basaltic-andesite one on the east. Gunung Malang II cinder cone on the upper eastern flank on the younger edifice fed a lava flow that extends 6 km to the east. Four craters occur at the summit of Gunung Slamet, with activity migrating to the SW over time. Historical eruptions, recorded since the 18th century, have originated from a 150-m-deep, 450-m-wide, steep-walled crater at the western part of the summit and have consisted of explosive eruptions generally lasting a few days to a few weeks last activity report- JULY 06- 12- 2011 by: by Smithsonian institute CVGHM reported that between 6 September 2009 and July 2011 eruptions from Slamet had been absent and plumes (likely steam) rose as high as 500 m above the crater. Seismicity and the temperature of hot water from springs both decreased. On 11 July, the Alert Level was lowered to 1 (on a scale of 1-4).
local survey:					CVGHM
latest eruption history (2010)					Media reports		videos:
year	begin	alert level	end	last status	Deutsch	Engl	English	other
2011	JULY-- 11		July 12 ?		CVGHM reported that between 6 September 2009 and July 2011 eruptions from Slamet had been absent and plumes (likely steam) rose as high as 500 m above the crater. Seismicity and the temperature of hot water from springs both decreased. On 11 July, the Alert Level was lowered to 1 (on a scale of 1-4).
img.: SLAMET (wikipedia)

71- SEMERU- MAY- 08- 2012

71- SEMERU (E- JAVA/ Indonesia)					Google Earth >
last known status>			last update:	MAY 15 - 2012	unknown*
ABOUT SEMERU ( geologic summary by Smithsonian inst./ USGS: Semeru is the highest volcano on Java and one of its most active. The symmetrical stratovolcano rises abruptly to 3,676 m above coastal plains to the S and lies at the southern end of a volcanic massif extending N to the Tengger caldera. Semeru has been in almost continuous eruption since 1967. Frequent small-to-moderate Vulcanian eruptions have accompanied intermittent lava dome extrusion, and periodic pyroclastic flows and lahars have damaged villages below the volcano. A major secondary lahar on 14 May 1981 caused more than 250 deaths and damaged 16 villages. last activity report - MAY 01 -08 2012 by: Smithsonioan inst/ world volcanism program): CVGHM reported that during 1-29 February multiple pyroclastic flows from Semeru traveled 500 and 2,500 m into the Besuk Kembar and Besuk Kobokan rivers (on the S flank), respectively. During 1 February-30 April dense gray-to-white plumes rose 100-500 m above Jongring Seloko crater and drifted W and N. Incandescence was visible up to 50 m above the crater during 1 February-31 March. Seismicity decreased from March to April. Observations indicated that the lava dome grew in April. On 2 May CVGHM lowered the Alert Level to 2 (on a scale of 1-4) and reminded the public not to approach the crater within a 4-km radius. *= "unknown" means: There was no further report by USGS
local volcano survey:				CVGHM
latest eruption history (2010)
year	begin	alert level	end
2012	MAY- 08		update	CVGHM reported that during 1-29 February multiple pyroclastic flows from Semeru traveled 500 and 2,500 m into the Besuk Kembar and Besuk Kobokan rivers (on the S flank), respectively. During 1 February-30 April dense gray-to-white plumes rose 100-500 m above Jongring Seloko crater and drifted W and N. Incandescence was visible up to 50 m above the crater during 1 February-31 March. Seismicity decreased from March to April. Observations indicated that the lava dome grew in April. On 2 May CVGHM lowered the Alert Level to 2 (on a scale of 1-4) and reminded the public not to approach the crater within a 4-km radius.
2012	FEB- 03		FEB- 14?	On 3 February, CVGHM reported that from 29 December 2011 to 2 February 2012 seismicity increased at Semeru, and dense white and gray plumes rose as high as 600 m above the Jonggring Seloko crater. During the month of January crater incandescence was observed and avalanches carried incandescent material 200-400 m away from the crater. On 2 February a large explosion was reported and incandescent material was ejected 2.5 km from the crater. Based on the seismic activity and visual observations, CVGHM raised the Alert Level from 2 to 3 (on a scale of 1-4) on 2 February.
SEMERU (Wikipedia)

87-RANAKAH- APRIL 10- 2012

83- TAMBORA- Sundra Islands

last update:

MAR 10- 2012

last activity report- APRIL - 04- 10 - 2011 by:

Smithsonioan inst/ world volcanism program):

local volcano survey:

DVGHM

click here to open activity history

year	begin	alert level	end	activity reports by: USGS
2012	JAN- 08		ongoing	CVGHM reported that during January-8 April white plumes rose 10-15 m above the Anak Ranakah lava dome and seismicity decreased. On 9 April the Alert Level was lowered to 1 (on a scale of 1-4).
2011	OCT- 19		Oct- 25?	CVGHM reported that throughout September and during 1-12 October diffuse white plumes rose 10-15 m above the Anak Ranakah lava dome. Plumes were not observed during 13-21 October. Starting on 1 July, seismicity had increased to a peak level on 15 August then declined through 20 October. Based on visual observations, seismicity, and deformation data, CVGHM lowered the Alert Level to 2 (on a scale of 1-4) on 22 October.
2011	SEP 08		Sep- 13?	Based on visual observations and seismic data analyses of the Anak Ranakah lava dome since December 2010, CVGHM raised the Alert Level on 26 August to 2 (on a scale of 1-4). During 26 August-7 September white plumes rose 5-10 m above the lava dome. Seismic activity continued to increase, prompting CVGHM to again raised the Alert Level, to 3, on 8 September.
2011	JUNE/ AUG		AUG- 30?	CVGHM reported that observers of Anak Ranakah, a lava dome that formed in 1987 at the base of the large older lava dome of Ranakah, noted white plumes rising up to 10 m high during January-24 August. Seismicity initially increased in December 2010, but increased again during June-August. Based on visual observations and seismic data analyses, CVGHM raised the Alert Level to 2 (on a scale of 1-4).

Media reports

videos:

RANAKAH

83- TAMBORA- APRIL 10- 2012

Google Earth

last update:

APRIL- 17- 2012

unknown

last activity report- APRIL - 04- 10 - 2011 by:

Smithsonioan inst/ world volcanism program):

local volcano survey:

click here to open latest activity history

Inhalt

year	begin	alert level	end	activity reports/ USGS:
2012	APRIL 09		update	CVGHM reported that during January-8 April plumes did not rise from Tambora, no changes were observed around the caldera, and seismicity decreased. On 9 April the Alert Level was lowered to 1 (on a scale of 1-4).
2011	SEP-22		ongoing	CVGHM reported that during 22 September-9 October plumes did not rise from Tambora; seismicity fluctuated, but declined overall. Based on visual observations, deformation data, and seismicity, the Alert Level was lowered to 2 (on a scale of 1-4) on 9 October.
2011	SEP- 08		Sep- 13?	Based on visual observation and seismic data, CVGHM reported an increase in activity at Tambora that started in April. Therefore, on 30 August, the Alert Level was raised to 2 (on a scale of 1-4). During 30 August-8 September seismicity continued to increase. Diffuse white plumes were observed on 5 September and rose 10 m above the crater rim. On 8 September the Alert Level was raised to 3 (on a scale of 1-4).
2011	active since MAR		AUG- 30?	Based on visual observation and seismic data, CVGHM reported an increase in activity at Tambora during the previous five months. Ground-based observers at an observation post in Tambora village noted dense white plumes rising 50-75 m above the caldera rim during April and June, but no plumes during May or July. In August dense white plumes rose 20 m above the caldera rim. Seismicity started to increase in April and continued to increase through August. On 30 August the Alert Level was raised to 2 (on a scale of 1-4).

Media reports

videos:

TAMBORA (Wikipedia)

Bali

...JAKARTA

52- GALUNGGUNG- FEB- 14- 2012

52- GALUNGGUNG ( JAVA, Indonesia)					Google Earth >
last known status>			last update:	FEB- 21- 2012	unknown
ABOUT GALUNGGUNG ( geologic summary by Smithsonian inst./ USGS:The forested slopes of 2,168-m-high Galunggung volcano in western Java are cut by a large horseshoe-shaped caldera breached to the SE that has served to channel the products of recent eruptions in that direction. The "Ten Thousand Hills of Tasikmalaya" dotting the plain below the volcano are debris-avalanche hummocks from the collapse that formed the breached caldera about 4,200 years ago. Although historical eruptions, restricted to the central vent near the caldera headwall, have been infrequent, they have caused much devastation. The first historical eruption in 1822 produced pyroclastic flows and lahars that killed over 4,000 persons. More recently, a strong explosive eruption during 1982-1983 caused severe economic disruption to populated areas near the volcano. last activity report- FEBRUARY 08 - 14- 2012 by: Smithsonioan inst/ world volcanism program): On 13 February, CVGHM reported that from September 2011 to 8 February 2012 discolorations in the crater lake water at Galunggung were observed. In addition, a sudden increase in water temperature was measured, from 27 degrees Celsius on 5 February to 40 degrees on 8 February. Based on seismic data and crater lake observations, CVGHM raised the Alert Level from 1 to 2 (on a scale of 1-4) on 12 February and recommended staying at least 500 m away from the lake shore.
local volcano survey:				CVGHM
latest eruption history (2010)
year	begin	alert level	end
2012	FEB- 13		FEB- 14?	On 13 February, CVGHM reported that from September 2011 to 8 February 2012 discolorations in the crater lake water at Galunggung were observed. In addition, a sudden increase in water temperature was measured, from 27 degrees Celsius on 5 February to 40 degrees on 8 February. Based on seismic data and crater lake observations, CVGHM raised the Alert Level from 1 to 2 (on a scale of 1-4) on 12 February and recommended staying at least 500 m away from the lake shore.
Galunggung (wikipedia)

73- LAMONGAN- APRIL - 24- 2012

73. LAMONGAN - Eastern Java					Google Earth >
last known status>				MAY- 08 -2011	unknown (no further report)
About LAMONGAN ( geological summary by global volcanism program/ USGS):Lamongan, a small 1,631-m-high stratovolcano located between the massive Tengger and Iyang-Argapura volcanic complexes, is surrounded by numerous maars and cinder cones. The currently active cone has been constructed 650 m to the SW of Gunung Tarub, the volcano's high point. As many as 27 maars with diameters from 150 to 700 m, some containing crater lakes, surround the volcano, along with about 60 cinder cones and spatter cones. Lake-filled maars, including Ranu Pakis, Ranu Klakah, and Ranu Bedali, are located on the eastern and western flanks; dry maars are predominately located on the northern flanks. None of the Lamongan maars has erupted during historical time, although several of the youthful maars cut drainage channels from Gunung Tarub. Lamongan was very active from the time of its first historical eruption in 1799 through the end of the 19th century, producing frequent explosive eruptions and lava flows from vents on the western side of the volcano ranging from the summit to about 450 m elevation. last activity report- MARCH 18- 24- 2012 by: by Smithsonian institute CVGHM reported that, although weather conditions often prevented observations of Lamongan during 9 March-17 April, white plumes were occasionally seen rising 10-20 m above the crater rim. Seismicity decreased during this period. CVGHM lowered the Alert Level to 1 (on a scale of 1-4) on 19 April. the last known eruption of IJEN was 1999
local survey:				CVGHM
latest eruption history (2010)				Media reports	videos:
year	begin	alert level	end	activity reports
2012	APRIL-09		MAY-01?	CVGHM reported that, although weather conditions often prevented observations of Lamongan during 9 March-17 April, white plumes were occasionally seen rising 10-20 m above the crater rim. Seismicity decreased during this period. CVGHM lowered the Alert Level to 1 (on a scale of 1-4) on 19 April.
2012	MAR- 08		;AR- 20?	CVGHM reported that during 1 February-9 March diffuse white plumes rose at most 20 m above Lamongan. Seismicity increased on 23 February, then fluctuated in intensity through 7 March. Seismicity increased significantly on 8 March and tremor was recorded continuously the next day. CVGHM raised the Alert Level to 2 (on a scale of 1-4) on 9 March. Residents and tourists were prohibited from going within a 1-km-radius of the active crater.
LAMONGAN ( Volcano discovery)

125- KARANGETANG [API SIAU- MAY- 15- 2012]

- 126- KARANGETANG [API SIA					Google Earth
last known status:			date:	MAY- 15 -2012
about KRANGETANG / by: global volcanism program) Geologic Summary. Karangetang (also known as Api Siau) lies at the northern end of the island of Siau, N of Sulawesi, and contains five summit craters strung along a N-S line. One of Indonesia's most active volcanoes, Karangetang has had more than 40 recorded eruptions since 1675. Twentieth-century eruptions have included frequent explosions, sometimes accompanied by pyroclastic flows and lahars.
last activity update - MAY- 09- 15- 2012 by: ( (by: Smithsonian/USGS- golbal volcanism program) Based on analyses of satellite imagery, the Darwin VAAC reported that on 14 May an ash plume from Karangetang rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted 130 km SE. On 16 May an ash plume again rose to an altitude of 3.7 km (12,000 ft) a.s.l. then drifted about 110 km SE. *= "unknown" means: There was no further report by USGS
local survey>			CVGHM
last eruption:				loc.	link	other
year	begin	status	end
2012	MAY- 14		ongoing
2011	AUG- 08		AUG- 15?	CVGHM reported that during July and August cloud cover often prevented observations of Karangetang, although white smoke was sometimes observed rising as high as 500 m above the crater. At night incandescence up to 10 m was often observed. On 8 July a phreatic eruption occurred from the N part of the Main Crater, ejecting material 150 m high. On 24 July and 1 August incandescent material traveled 1,500 m from the Main Crater. Sounds indicating an eruption were heard on 7 August, although fog prevented observations of the crater. Based on recent visual observations and increased seismicity, the Alert Level was raised to 3 (on a scale of 1-4) on 8 August. According to a news article, about 600 people living on the flanks evacuated.
2011	MARCH-25		JUNE-06	CVGHM reported that during 25 March-5 June seismic activity at Karangetang decreased along with the potential threat of avalanches and pyroclastic flows. During 1 May-5 June no pyroclastic flows were observed. Lava flowed 200 m down the flanks and produced incandescent material from the flow fronts that traveled an additional 1.5-1.8 km. Bluish-white emissions rose as high as 500 m from the main crater and incandescence from the crater was observed at night. Lava flow and avalanche activity decreased on 19 May. The Alert Level was lowered to 2 (on a scale of 1-4) on 6 June.
2011	MAR- 11		APR- 05	Based on analyses of satellite imagery, the Darwin VAAC reported that on 11 March an ash plume from Karangetang rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 55 km SW. According to news reports, lava flows at the summit were visible on 11 March. Blocks originating from the lava dome traveled as far as 2 km down the flanks. Hot gas clouds also descended the flanks. The VAAC also noted that on 13 March an ash plume rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted 37 km.
2010	DEC- 12		DEC- 21
local links/ survey			CVGHM


Karangetang- wikipedia				eruption March 2011

08 SINABUNG- AUG- 28- 2010

08 SINABUNG latest activity history :
last known status:		last update:	12. Dec-2010		unknown
last eruption:			loc.	link	other
year	begin	end
2010	AUG- 28-	Sep 10	available	none	none	none

96- EGON- JUNE- 22- 2011

96- EGON( INDONESIA)				Google Earth >
last known status:			date:	JUNE- 28-2011		unknown
about 96- EGON/ by: global volcanism program) Geologic Summary. EGON by Smithsonian/ USGS- global volcanism program:.Gunung Egon volcano sits astride the narrow waist of eastern Flores Island. The barren, sparsely vegetated summit region has a 350-m-wide, 200-m-deep crater that sometimes contains a lake. Other small crater lakes occur on the flanks of the 1,703-m-high volcano. A lava dome forms the southern 1,671-m-high summit. Reports of historical eruptive activity are inconclusive. A column of "smoke" was often observed above the summit during 1888-1891 and in 1892. Strong "smoke" emission in 1907 reported by Sapper (1917) was considered by the Catalog of Active Volcanoes of the World (Neumann van Padang, 1951) to be an historical eruption, but Kemmerling (1929) noted that this was likely confused with an eruption on the same date and time from Lewotobi Lakilaki volcano
last weekly activity report- JUNE- 16- 23- 2011 by: (by: Smithsonian/USGS- golbal volcanism program) CVGHM reported that on 17 June the Alert Level for Egon was lowered to 1 (on a scale of 1-4) because seismicity had decreased and emission heights had been lower since January.
local links/ survey			VAAC
last eruption:				loc.	link	other
year	begin	status	end
2011	JUNE-17		June- 23?	CVGHM reported that on 17 June the Alert Level for Egon was lowered to 1 (on a scale of 1-4) because seismicity had decreased and emission heights had been lower since January.
BATU TARA

95- PALUWEH- (IND) - JAN- 31- 2012

95- PALUWEH- INDONESIA				Google Earth >
last known status:			date:	FEBRUARY- 31- 2012		unknown
about by: global volcanism program) Geologic Summary. PALUWEH - by Smithsonian/ USGS- global volcanism program:Paluweh volcano, also known as Rokatenda, forms the 8-km-wide island of Paluweh N of the volcanic arc that cuts across Flores Island. Although the volcano rises about 3,000 m above the sea floor, its summit reaches only 875 m above sea level. The broad irregular summit region contains overlapping craters up to 900 m wide and several lava domes. Several flank vents occur along a NW-trending fissure. The largest historical eruption of Paluweh occurred in 1928, when a strong explosive eruption was accompanied by landslide-induced tsunamis and lava-dome emplacement. last activity report- JANUARY 25- 31- 2012 by:
(by: Smithsonian/USGS- global volcanism program) Seismic activity from Paluweh (also known as Rokatenda) increased during 12-18 January, prompting CVGHM to raise the Alert Level from 1 to 2 (on a scale of 1-4) on 19 January. Fog prevented visual observations of the volcano.
local links/ survey			VAAC
last eruption:				loc.	link	other
year	begin	status	end
2012	JAN- 19		JAN- 31?	Seismic activity from Paluweh (also known as Rokatenda) increased during 12-18 January, prompting CVGHM to raise the Alert Level from 1 to 2 (on a scale of 1-4) on 19 January. Fog prevented visual observations of the volcano.
2011	JUNE- 17		JUNE- 23?	CVGHM reported that volcanic tremor from Paluweh had not been detected since 1 March 2010 and during January 2011-June solfatara emissions from the summit were not observed. On 17 June, the Alert Level was lowered to 1 (on a scale of 1-4)

118- SOPUTAN ( IND) - SEP-13- 2011

118- SOPUTANlatest activity history :						Google Earth >
last known activity status>			last update/ USGS :	AUGUST-20- 2011		unknown
ABOUT SOPOTAN : ( Geological summary by globyl volcanism program/ Smithsonian/USGS: The small conical volcano of Soputan on the southern rim of the Quaternary Tondano caldera is one of Sulawesi's most active volcanoes. During historical time the locus of eruptions has included both the summit crater and Aeseput, a prominent NE-flank vent that formed in 1906 and was the source of intermittent major lava flows until 1924. last activity update / August 10-16- 2011 by: Smithsonioan inst/ world volcanism program): CVGHM reported that during 19 July-13 August white plumes from Soputan's summit crater rose 50-150 m. Seismicity fluctuated, but declined overall until 10 August. On 14 August a gray-and-white eruption plume rose 1 km above the crater. Throughout the day, two more similar plumes rose 1.3 km above the crater. Based on analysis of satellite imagery, the Darwin VAAC reported that an ash plume drifted more than 100 km W. The Alert Level was raised to 3 (on a scale of 1-4). Visitors and residents were prohibited from going within a 6-km radius of the crater.
local survey:				PHIVOLCS		VAAC
latest eruption history (2010)				reports and videos:
year	begin	alert level	end	Deutsch	Engl	English	other
2011	AUG- 14		ongoing in intervals?	CVGHM reported that during 19 July-13 August white plumes from Soputan's summit crater rose 50-150 m. Seismicity fluctuated, but declined overall until 10 August. On 14 August a gray-and-white eruption plume rose 1 km above the crater. Throughout the day, two more similar plumes rose 1.3 km above the crater. Based on analysis of satellite imagery, the Darwin VAAC reported that an ash plume drifted more than 100 km W. The Alert Level was raised to 3 (on a scale of 1-4). Visitors and residents were prohibited from going within a 6-km radius of the crater.
2011	JULY- 20?		JULY- 26?	CVGHM reported that on 3 July an explosion of incandescent material from Soputan was followed by a 6-km-high ash plume and a pyroclastic flow that traveled as far as 4 km W. Later that day a dense white plume rose 50 m above the crater. On 20 July CVGHM noted that since 4 July seismicity had decreased and only diffuse white plumes rose 75 m above the crater until 18 July. The Alert Level was lowered to 2 (on a scale of 1-4) on 19 July. Visitors and residents were prohibited from going within a 4-km radius of the crater.
2011	JULY-05		July-05?	CVGHM reported that during June diffuse white plumes from Soputan rose 25-150 m. During 21 June-2 July seismicity increased, and on 2 July the Alert Level was raised to 3 (on a scale of 1-4). Visitors and residents were discouraged from going within a 6-km radius of the crater and climbing the volcano was prohibited. According to news articles, a CVGHM volcanologist reported that a Strombolian eruption that began on 3 July produced an ash plume that rose 6 km and drifted W. Ashfall impacted villages, trees, and vegetation downwind. Sam Ratulangi International airport in the capital of Manado was closed for three hours. Articles also stated that the Red Cross distributed about 31,000 masks to area residents.
img.: wiki/ SOPOTAN
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02- SEULAWAH AGAM (SU)- JULY- 19- 2011

02-SEULAWAH AGAM (Sumatra)						Google Earth >
last known activity status>			last update/ USGS :	JULY-26- 2011		unknown
ABOUT SEULAWAH AGAM : ( Geological summary by global volcanism program/ Smithsonian/USGS: CVGHM reported that during October 2010-July 2011 activity at Seulawah Agam decreased. Measurements indicated that seismicity decreased, water temperature decreased and pH levels were stable, gas emissions were lower, and no significant surface changes were observed. The Alert Level was lowered to 1 (on a scale of 1-4) on 11 July. last activity report- July 13- 19- 2011, provided by: Smithsonioan inst/ world volcanism program):
local survey:				CVGHM
latest eruption history (2010)				reports and videos:
year	begin	alert level	end	Deutsch	Engl	English	other
2011	?		July- 19?

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98- LEWOTOBI- APRIL 03- 2012

98- LEWOTOBI- Flores Island					Google Earth >
last known status>			last update:	APRIL 10 - 2012	unknown
ABOUT LEWOTOBI - by: Smithsonian Institute/ global volcanism program: The Lewotobi "husband and wife" twin volcano (also known as Lewetobi) in eastern Flores Island is composed of the Lewotobi Lakilaki and Lewotobi Perempuan stratovolcanoes. Their summits are less than 2 km apart along a NW-SE line. The conical 1,584-m-high Lewotobi Lakilaki has been frequently active during the 19th and 20th centuries, while the taller and broader 1,703-m-high Lewotobi Perempuan has erupted only twice in historical time. Small lava domes have grown during the 20th century in the crescentic summit craters of both volcanoes, which are open to the N. A prominent flank cone, Iliwokar, occurs on the E flank of Lewotobi Perampuan. last activity report- MARCH 28- APRIL 03 - 2012 by: Smithsonioan inst/ world volcanism program): CVGHM reported that seismicity at Lewotobi Lakilaki, one of two stratovolcanoes comprising Lewotobi, fluctuated but declined overall during 18 September 2011-25 March 2012. No significant changes were observed at the volcano. The Alert Level was lowered to 1 (on a scale of 1-4) on 29 March. Observers of Lewotobi Perempuan, the second stratovolcano comprising Lewotobi, noted that during January-March diffuse white plumes rose 15 m above the crater and no significant changes had occurred. After 31 August 2011 through 25 March 2012 seismicity fluctuated but declined overall. On 29 March the Alert Level was lowered to 1.
local volcano survey:				DVGHM
latest eruption history (2010)
year	begin	alert level	end	last activity reportsGVP
2012	MARCH 25		lowered	CVGHM reported that seismicity at Lewotobi Lakilaki, one of two stratovolcanoes comprising Lewotobi, fluctuated but declined overall during 18 September 2011-25 March 2012. No significant changes were observed at the volcano. The Alert Level was lowered to 1 (on a scale of 1-4) on 29 March. Observers of Lewotobi Perempuan, the second stratovolcano comprising Lewotobi, noted that during January-March diffuse white plumes rose 15 m above the crater and no significant changes had occurred. After 31 August 2011 through 25 March 2012 seismicity fluctuated but declined overall. On 29 March the Alert Level was lowered to 1.
2011	Sep- 22		onging	CVGHM raised the Alert Level for Lewotobi Lakilaki, one of two stratovolcanoes composing Lewotobi, to 2 (on a scale of 1-4) on 22 September due to increased seismicity since 17 September and visual observations. Although no significant changes in the volcano were observed, diffuse white plumes rose 15 m above the crater. Visitors and residents were prohibited from going within a 1-km radius of Lewotobi Lakilaki.
2011	August		SEP- 06?	CVGHM reported that during 26-31 August seismicity at Lewotobi increased. Plumes of "smoke" rose 15-50 m above the Lewotobi Perampuan crater rim; no other significant changes were visibly apparent. Based on the seismic data, the Alert Level was raised to 2 (on a scale of 1-4) on 31 August. Visitors and residents were advised not to approach the volcano within 1 km of the Lewotobi Perampuan crater.

58- SUNDORU- APRIL 03 - 2012

58- SUNDORO ( Java,INDONESIA)					Google Earth >
last known activity status>			last update	APRIL 10 - 2011	unknown
About SUNDORO (geologic summary by global volcanism program( Smithsonian institute): Gunung Sundoro, one Java's most symmetrical volcanoes, is separated by a 1400-m-high saddle from Sumbing volcano. Parasitic craters and cones, the largest of which is Kembang, occur on the NW-to-southern flanks, and all fed lava flows. A small lava dome occupies the summit crater of the 3136-m-high volcano, and numerous phreatic explosion vents were formed along radial fissure that cut the dome and extend across the crater rim. Lava flows extend in all directions from the summit crater. Deposits of a large prehistoric debris avalanche are located below the NE flank of Sundoro. Pyroclastic-flow deposits dated at 1720 years before present extend as far as 13 km from the summit. Historical eruptions typically have consisted of mild-to-moderate phreatic explosions, mostly from the summit crater. Flank vents were also active in 1882 and 1903. last activity report- MARCH 28- APRIL 03 - 2012 by: Smithsonioan inst/ world volcanism program): CVGHM reported that seismicity at Sundoro continued to increase into January after the Alert Level was raised from 1 to 2 (on a scale of 1-4) on 5 December 2011. After the first week of January through 27 March the number of daily earthquakes significantly decreased. The Alert Level was lowered to 1 on 30 March.
local survey:
latest activity history					VAAC
year	activity begin	activity status	activity end	activity reports
2012	update		ongoing
2011	DEC-05		APRIL 03?	CVGHM reported increased seismic activity at Sundoro during October -4 December. On 26 November and 2 December smoke was reported from many fumaroles around the summit crater. Based on visual and seismic data, CVGHM raised the Alert Level from 1 to 2 (on a scale of 1-4) on 5 December.
SUNDORO ( wikipedia)
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102- LEWOTOLO - JAN- 31- 2012

102- LEWOTOLO /Indonesia/ Lomblen Island					Google Earth >	LEWOTOLO
last known status>			last update:	FEBRUARY- 07 - 2012:	unknown
ABOUT LEWUTOLO: (GVP/ Smithsonian institute/ USGS: Anchoring the eastern end of an elongated peninsula that is connected to Lomblen Island by a narrow isthmus and extends northward into the Flores Sea, Lewotolo rises to 1,423 m. Lewotolo is a symmetrical stratovolcano as viewed from the N and E. A small cone with a 130-m-wide crater constructed at the SE side of a larger crater forms the volcano's high point. Many lava flows have reached the coastline. Historical eruptions, recorded since 1660, have consisted of explosive activity from the summit crater. last activity report- JANUARY 25- 31- 2012 by: Smithsonian inst/ world volcanism program): On 25 January CVGHM lowered the Alert Level for Lewotolo from 3 to 2 (on a scale of 1-4) based on decreased seismicity and visual observations during 5-15 January. During 5-15 January fumarolic plumes rose 200-500 m above the summit and incandescence was observed. ongoing activity with interuptions
local volcano survey:				VAAC	CVGHM

year	begin	alert level	end	GVP reports:
2011	JANUARY 25		JAN- 31?	On 25 January CVGHM lowered the Alert Level for Lewotolo from 3 to 2 (on a scale of 1-4) based on decreased seismicity and visual observations during 5-15 January. During 5-15 January fumarolic plumes rose 200-500 m above the summit and incandescence was observed.
2011	DECEMBER 31		Jan- 11- 2012?	CVGHM reported that white plumes rose 50-250 m above the summit of Lewotolo during the month of December. Seismicity increased on 31 December and intensified on 2 January, the same day incandescence was observed. Based on visual and seismic observations, CVGHM raised the Alert Level from 1 to 2 (on a scale of 1-4) on 2 January, then later that day raised the Alert Level to 3.

M 6.6 - 2012-04-21

106- SIRUNG- MAY 15- 2012

106- SIRUNG - Pantar Islands

MAY- 15- 2012

last activity update - MAY- 09- 15- 2012 by:

by Smithsonian institute

CVGHM reported that on 8 May a three-hour long ash eruption from Sirung was accompanied by loud sounds and incandescence that reached 10 m above the crater. An ash plume rose 3.5 km above the crater and drifted N, producing ashfall up to 4 mm thick near the crater. During 9-12 May white plumes rose 30-50 m above the crater. A sulfur odor was reported in areas up to 3 km away on 12 May. That same day CVGHM raised the Alert Level to 3 (on a scale of 1-4) and recommended that visitors not approach the volcano within a 2.5 km radius. Based on a report from a ground-based observer and analyses of satellite imagery, the Darwin VAAC noted that on 12 May an ash plume rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted about 95 km SW.

*= "unknown" means: There was no further report by USGS

local survey: