South Sumatra, Hulubelu Volcano

South Sumatra, Hulubelu Volcano

http://www.volcano.si.edu/world/volcano.cfm?vnum=0601-28=

Hulubelu

Country: Indonesia
Subregion Name: Sumatra (Indonesia)
Volcano Number: 0601-28=
Volcano Type: Caldera
Volcano Status: Fumarolic
Last Known Eruption: Unknown
Summit Elevation: 1040 m 3,412 feet
Latitude: 5.35°S 5°21’0″S
Longitude: 104.60°E 104°36’0″E
Hulubelu is an elliptical, 4-km-long caldera or volcano-tectonic depression in SE Sumatra. The caldera floor, about 700 m above sea level, is surrounded by steep walls. Post-caldera volcanism formed central cones and basaltic and andesitic flank volcanoes. The age of its latest eruptions is not known, although solfataric areas, mud volcanoes, and hot springs occur at several locations. Thermal areas are aligned NE of and parallel to the Great Sumatran Fault, which runs the entire length of the island of Sumatra.

South Sumatra, Suoh Volcano

South Sumatra, Suoh Volcano

http://www.volcano.si.edu/world/volcano.cfm?vnum=0601-27=

suoh

summit elevation 1000 m
maars and lava dome

(Also called Pematang Bata). The volcano is located in south Sumatra.

A major earthquake (Mag 7.2) on February 15, 1994 triggered a phreatic eruption of Suoh Volcano 2 weeks later. This is the second time that this has happened at Suoh Volcano. The first was in 1933 when the volcano ejected 0.2 cubic km of tephra. The eruption formed two craters with the northernmost measuring 2 km x 1.5 km, and the southern 1 km x 0.75 km. A roaring noise came from 100 vents and the eruption was heard 660 km away in Java.

1933 Eruption
A phreatic eruption occurred at Suoh volcano on 10th July 1933, 14 days after a large earthquake in southern Sumatra. The explosions were heard in Java 660 km away. Trees were uprooted and snapped off at the roots.

Suoh Volcano Eruptions

1994, 1933 (VEI 5)

Country: Indonesia
Subregion Name: Sumatra (Indonesia)
Volcano Number: 0601-27=
Volcano Type: Calderas
Volcano Status: Historical
Last Known Eruption: 1933 
Summit Elevation: 1000 m 3,281 feet
Latitude: 5.25°S 5°15’0″S
Longitude: 104.27°E 104°16’0″E
The 8 x 16 km Suoh (or Suwoh) depression appears to have a dominantly tectonic origin, but contains a smaller complex of overlapping calderas oriented NNE-SSW. Historically active maars and silicic domes lie along the margins of the depression, which lies along the Great Sumatran Fault that extends the length of the island. Numerous hot springs occur along faults within the depression, which contains the Pematang Bata fumarole field. Large phreatic explosions (0.2 cu km tephra) occurred at the time of a major tectonic earthquake in 1933. Very minor hydrothermal explosions produced two 5-m-wide craters at the time of a February 1994 earthquake.

South Sumatra, Patah Volcano

South Sumatra, Patah Volcano

http://www.volcano.si.edu/world/volcano.cfm?vnum=0601-231

Patah

Country: Indonesia
Subregion Name: Sumatra (Indonesia)
Volcano Number: 0601-231
Volcano Type: Unknown
Volcano Status: Fumarolic
Last Known Eruption: Unknown
Summit Elevation: 2817 m 9,242 feet
Latitude: 4.27°S 4°16’0″S
Longitude: 103.30°E 103°18’0″E
Patah is a heavily forested, dissected Quaternary volcano SE of Dempo volcano. The age of its latest eruptions is not known, although on May 1, 1989, a possible new crater with active fumaroles was observed by a cargo aircraft pilot in a heavily forested area about 6 km SE of the summit of Gunung Patah, near Bukit Baturigis (about 4 deg 18 min S, 103 deg 19 min E). The exact location of the 150-m-wide crater, date of its formation, and its geologic relationship to nearby Patah volcano are uncertain. Another vent containing a crater lake is located 1 km to the south.

Bengkulu, Dempo Volcano

Bengkulu, Dempo Volcano

http://www.volcano.si.edu/world/volcano.cfm?vnum=0601-23=

dempo

Country: Indonesia
Subregion Name: Sumatra (Indonesia)
Volcano Number: 0601-23=
Volcano Type: Stratovolcanoes
Volcano Status: Historical
Last Known Eruption: 2009 
Summit Elevation: 3173 m 10,410 feet
Latitude: 4.03°S 4°2’0″S
Longitude: 103.13°E 103°8’0″E
Dempo is a prominent 3173-m-high stratovolcano that rises above the Pasumah Plain of SE Sumatra. The andesitic Dempo volcanic complex has two main peaks, Gunung Dempo and Gunung Marapi, constructed near the SE rim of a 3 x 5 km caldera breached to the north. The one called Dempo is slightly lower, with an elevation of 3049 m and lies at the SE end of the summit complex. The taller Marapi cone, with a summit elevation 3173 m, was constructed within a crater cutting the older Gunung Dempo edifice. Remnants of 7 craters are found at or near the summit of the complex, with volcanism migrating to the WNW with time. The large, 800 x 1100 m wide historically active summit crater cuts the NW side of Gunung Marapi (not to be confused with Marapi volcano 500 km to the NW in Sumatra) and contains a 400-m-wide lake located at the far NW end of the crater complex. Historical eruptions have been restricted to small-to-moderate explosive activity that produced ashfall near the volcano.

Bengkulu, Kaba Volcano

Bengkulu, Kaba Volcano

http://www.volcano.si.edu/world/volcano.cfm?vnum=0601-22=

kaba

Kaba volcano is located in SW Sumatra, Indonesia. An extinct volcano (Hitam) is located closeby. Kaba Volcano is located at Rejanglebong Regency, Bengkulu, Sumatra. There are 8 craters show historical explosive activity.

The summit area of Kaba volcano contains three high peaks – Bukit Kaba, Bukit Itam (1893 m) and Bukit Malintang (1713 m) with three craters among them called Kaba west-old crater, Kaba middle-new crater and kaba vogelsang crater.

Eruption products include basaltic-andesit lava, pyroclastic flow and pyroclastic fall deposits.

2009 Unrest
Seismic activity has increased at Kaba volcano, Sumatra, Indonesia. On 19th October 2009, 127 shallow volcanic earthquakes were recorded. Continuous tremor occurred on 19th October between 06:40-09:00 hr, and 20th October between 03:00 to 09:00 hr. Visual observations showed thin white emissions rising 50 m above the crater. Ground deformation has been measured across the volcano. Water temperature measurements of the craters on 15th October was 72 deg C, with a degree of acidity (pH) 3.2. Solfatara temperatures range from 106 to 107 deg C. A one kilometre exclusion zone has been placed around the crater. On 20th October 2009 the volcano was raised to alert level 2.

2000 Eruption
On 26-27 August 2000, five small ash emissions, accompanied by earthquakes, occurred at Kaba volcano. The increase in activity occurred after a magnitude 7.8 tectonic earthquake near Bengkulu, Sumatra.

1940 Eruptions
Increased eruptions occurred at Kaba volcano in January-March, June, July, and October 1940.

Kaba Volcano Eruptions

2000, 1956, 1952, 1950-51, 1939-41, 1918?, 1907, 1873-92, 1868-69, 1853, 1834, 1833

Country: Indonesia
Subregion Name: Sumatra (Indonesia)
Volcano Number: 0601-22=
Volcano Type: Stratovolcano
Volcano Status: Historical
Last Known Eruption: 2000 
Summit Elevation: 1952 m 6,404 feet
Latitude: 3.52°S 3°31’0″S
Longitude: 102.62°E 102°37’0″E
Kaba, a twin volcano with Mount Hitam, has an elongated summit crater complex dominated by three large historically active craters trending ENE from the summit to the upper NE flank. The SW-most crater of 1952-m-high Gunung Kaba, Kawah Lama, is the largest. Most historical eruptions have affected only the summit region of the volcano. They mostly originated from the central summit craters, although the upper-NE flank crater Kawah Vogelsang also produced explosions during the 19th and 20th centuries.

West Sumatra, Kunyit Volcano

West Sumatra, Kunyit Volcano

http://www.volcano.si.edu/world/volcano.cfm?vnum=0601-171

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Kunyit-01-800

Country: Indonesia
Subregion Name: Sumatra (Indonesia)
Volcano Number: 0601-171
Volcano Type: Stratovolcano
Volcano Status: Fumarolic
Last Known Eruption: Unknown
Summit Elevation: 2151 m 7,057 feet
Latitude: 2.274°S 2°16’27″S
Longitude: 101.483°E 101°28’57″E
Kunyit volcano lies about 10 km south of Lake Kerinci, well to the north of its location listed in Neumann van Padang (1951). The summit of the dacitic, 2151-m-high Kunyit volcano contains two craters open to the south, the uppermost of which has a small crater lake. The age of the latest eruptive activity from Kunyit is not known, although fumarolic activity occurs at the youngest crater on the northern side of the summit area.

West Sumatra, Talang volcano

West Sumatra, Talang volcano

http://www.volcanolive.com/talang.html

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Talang-volcano-01-800

Talang Volcano (also known as Salasi or Sulasih) is located in Kota Anau of Solok Regency, Sumatra. An extinct volcano, Pasar Arbaa, is nearby. There is no summit crater at Talang volcano, but a valley 300 m long and 30 – 90 m wide with fumarolic activity. Historical eruptions from Talang volcano have occurred in a valley on the upper NE side of the volcano. There are two crater lakes on the volcano, the largest being Danau Talang. An active fault stretches NW from Danau Dibaru near the summit of Talang volcano to Danau Singkarak 40 km away.

Talang Volcano Tours

Talang Volcano – John Seach

John Seach at the summit of Talang Volcano in March 2008.
Devastated trees are from 2005 eruption. Tornillos were recorded at the volcano in early 2008.

2009 Unrest
Alert level increased to 3 (Siaga) at Talang volcano on 17th August 2009. This follows a series of tectonic earthquakes in Mentawai, 130 km SSW on 16th August, and an increase in tremor at the volcano. A magnitude 7.6 earthquake hit 80 km NW of the volcano on 30th September 2009.

2008 Tornillo Earthquakes
Tornillo earthquakes commenced at the volcano in February 2008, and were catalogued during a visit by John Seach. During a summit climb in March 2008 John Seach noted summit earthquakes, high pressure noisy fumaroles, and devastated forest from the 2005 eruption.

2007 Ash emissions
During 18-25th June 2007, thick brown ash plumes rose to an altitude of 3.1 km.

2005 Eruption
Talang volcano erupted on 10th April 2005, 12 days after the second Sumatra earthquake (Magnitude 8.7)

Saturday 16th April 2005.
Over 40,000 people have been evacuated from the slopes of Talang volcano in Sumatra. A five kilometer exclusion zone has been declared around the craters. There is potential for significant eruption. Aircraft should exercise caution when overflying the area. Talang volcano remains at the highest level of alert at 4.
Monday 18th April 2005
The alert level at Talang volcano in Sumatra has been reduced from 4 to 3. The volcano erupted on Tuesday 12th April. Volcanic activity has declined over the past few days.

Saturday 16th April 2005.
The eruption of Talang volcano during the week has caused the evacuation of thousands of refugees, who have spent a third night in tents. The eruption has also affected tea plantations close to the volcano, which have been covered in ash. The evacuated villages are: Bukit Cileh (3,485 people), Batu Bajanjang (3,632), Koto Laweh (4,660), Kampung Batu Dalam (8,112), and Air Batumbua (2,815), a total of 22,713 people. In addition 5,000 residents from nearby villages volunatarily left their homes.

News report by John Seach, 12th April 2005.
Talang volcano erupted on 12th April 2005, with ash to 25,000 ft. Talang volcano is located in Sumatra, close to recent large earthquakes. Talang is on a list of volcanoes identified at risk of eruption by John Seach following the large earthquakes in the region. (See Volcano Live news reports for 10th April 2005, and 30th December 2004). The volcano is at maximum alert level 4 (out of 4) and volcanic activity has been increasing following Mentawai earthquake of 10th April. Talang volcano is just 40 kilometers east of the coastal capital of West Sumatra province, Padang.

Talang Volcano Eruptions

2007, 2006, 2005, 2002, 2001, 1986?, 1968, 1968, 1967, 1963, 1876?, 1845, 1843, 1833.

Country: Indonesia
Subregion Name: Sumatra (Indonesia)
Volcano Number: 0601-15=
Volcano Type: Stratovolcanoes
Volcano Status: Historical
Last Known Eruption: 1924 
Summit Elevation: 2438 m 7,999 feet
Latitude: 0.433°S 0°25’58″S
Longitude: 100.317°E 100°19’2″E
Tandikat and its twin volcano to the NNE, Singgalang, lie across the Bukittinggi plain from Marapi volcano. Volcanic activity has migrated to the SSW from Singgalang and only Tandikat has had historical activity. The summit of Tandikat has a partially eroded 1.2-km-wide crater containing a large central cone capped by a 360-m-wide crater with a small crater lake. The only three reported historical eruptions, in the late 19th and early 20th centuries, produced only mild explosive activity.

West Sumatra, Tandikat Volcano

West Sumatra, Tandikat Volcano

http://www.volcano.si.edu/world/volcano.cfm?vnum=0601-15=

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Tandikat-01-800

Tandikat Volcano is a stratovolcano also known as Tandikai, Tandike. The volcano is located in the Padang Highlands, West Sumatra, about 7.5 km from Padangpanjang. It is joined to a larger mountain called Singgalang.

Tandikat Volcano – John Seach

There are two summit craters, one with a lake. Crater A is 1200 m in diameter and covered with dense vegetation. Crater B is 400 m in diameter. Crater A has produced 24 lava flows and 4 pyroclastic flows, whereas B crater produced one lava flow. A waterfall called Lembah Anai is a tourist attraction.

2003 Earthquakes
Residents felt an earthquake near Tandikat volcano on 20th January 2003. A significant number of volcanic earthquakes were measured at the volcano. During the week of 20-26 January 2003, 149 deep volcanic earthquakes were recorded, and 174 tectonic earthquakes. The alert level was raised to 2 (on a scale of 1-4) on 25 January 2003. No eruptions occurred.

Tandikat Volcano Eruptions

1924, 1914, 1889.

Country: Indonesia
Subregion Name: Sumatra (Indonesia)
Volcano Number: 0601-15=
Volcano Type: Stratovolcanoes
Volcano Status: Historical
Last Known Eruption: 1924 
Summit Elevation: 2438 m 7,999 feet
Latitude: 0.433°S 0°25’58″S
Longitude: 100.317°E 100°19’2″E
Tandikat and its twin volcano to the NNE, Singgalang, lie across the Bukittinggi plain from Marapi volcano. Volcanic activity has migrated to the SSW from Singgalang and only Tandikat has had historical activity. The summit of Tandikat has a partially eroded 1.2-km-wide crater containing a large central cone capped by a 360-m-wide crater with a small crater lake. The only three reported historical eruptions, in the late 19th and early 20th centuries, produced only mild explosive activity.

West Sumatra, Talakmau volcano

West Sumatra, Talakmau volcano

http://www.volcano.si.edu/world/volcano.cfm?vnum=0601-13=

Talakmau

Country: Indonesia
Subregion Name: Sumatra (Indonesia)
Volcano Number: 0601-13=
Volcano Type: Complex volcano
Volcano Status: Holocene
Last Known Eruption: Unknown
Summit Elevation: 2919 m 9,577 feet
Latitude: 0.079°N 0°4’45″N
Longitude: 99.98°E 99°59’0″E
Talakmau (also known as Talamau) is a massive compound volcano rising above the western coastal plain of Sumatra. The andesitic-dacitic volcano is constructed along a NE-SW line, rising to 2912 m, more than 700 m above its twin volcano Pasaman to the SW, which has its own adventive cone, Bukit Nilam, lying 3.4 km to the SW. Three craters along the same NE-SW trend occur at the summit of Talakmau; the NE-most and highest crater is filled by a lava dome. Reports of historical eruptions, including one with rumblings and “smoke” emission in 1937, are considered doubtful, but eruptive activity has occurred during the Holocene.