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Sorikmarapi

Photo of this volcano
  • Indonesia
  • Composite (Stratovolcano)
  • 1986 CE
  • Country
  • Landform (Volc Type)
  • Last Known Eruption
  • 0.686°N
  • 99.539°E

  • 2145 m
    7037 ft

  • 261120
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Weekly Report: 28 December-3 January 2012 Citation IconCite this Report

CVGHM lowered the Alert Level for Sorikmarapi on 30 December from 2 to 1 (on a scale of 1-4).

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)


Most Recent Bulletin Report: August 1996 (BGVN 21:08) Citation IconCite this Report

During May, "smoke" in vicinity reaches 10-km altitude

On the morning of 5 May 1996, Qantas Airlines reported "smoke" over Sumatra near Sorikmarapi to just above 10 km altitude. However, in a satellite pass about 2 hours earlier there was no evidence of an eruption.

Information Contacts: Bureau of Meteorology, Northern Territory Regional Office, P.O. Box 735, Darwin NT 0801, Australia.

Weekly Reports - Index


2011: December


28 December-3 January 2012 Citation IconCite this Report

CVGHM lowered the Alert Level for Sorikmarapi on 30 December from 2 to 1 (on a scale of 1-4).

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)


7 December-13 December 2011 Citation IconCite this Report

CVGHM reported increased seismicity from Sorik Marapi during 1-12 December and white plumes rose 40-50 m above the summit. CVGHM raised the Alert Level on 12 December from 1 to 2 (on a scale of 1-4) based on seismic data.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)


Bulletin Reports - Index

Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

06/1986 (SEAN 11:06) Dark ash plume

07/1986 (SEAN 11:07) No new explosions

08/1987 (SEAN 12:08) Seismicity and fumarole temperatures increase

07/1989 (SEAN 14:07) Thermal activity; no shallow seismicity

12/1989 (GV11 89:12) Phreatic explosion ejects mud

08/1996 (BGVN 21:08) During May, "smoke" in vicinity reaches 10-km altitude




Information is preliminary and subject to change. All times are local (unless otherwise noted)


June 1986 (SEAN 11:06) Citation IconCite this Report

Dark ash plume

. . . on 5 July at 1520, a large dark ash plume was observed from Sibangor Tonga observation post. No additional explosions were recorded on 5 or 6 July.

Information Contacts: L. Pardyanto, Olas, Kaswanda, A. Sudradjat, and T. Casadevall, VSI.


July 1986 (SEAN 11:07) Citation IconCite this Report

No new explosions

The ash plume from the 5 July explosion reached 700 m above the summit. No additional explosions have been recorded.

Information Contacts: L. Pardyanto, Olas, Kaswanda, Suratman, A. Sudradjat, and T. Casadevall, VSI.


August 1987 (SEAN 12:08) Citation IconCite this Report

Seismicity and fumarole temperatures increase

Temperatures increased at two fumaroles during August: from 104 to 197°C at the N crater, and from 95 to 108°C at Sibangor Julu. White fume was almost continuously present, rising to ~100 m above the crater. In late August, seismic activity began to increase. By early September, near-surface earthquakes averaged ~7/day and deeper, tectonic earthquakes averaged ~40/day.

Information Contacts: VSI.


July 1989 (SEAN 14:07) Citation IconCite this Report

Thermal activity; no shallow seismicity

Normal activity continued in late July, with a weak gas plume reaching 5-10 m above the crater. The temperature of the crater solfatara was 185-190°C, while two surrounding solfataric areas measured 108-110°C and 97-115°C. Twenty-nine tectonic earthquakes (but no volcanic shocks) were recorded.

Information Contacts: VSI.


December 1989 (GV11 89:12)

Phreatic explosion ejects mud

[A single phreatic explosion rose 25 m above the Sibangor Tonga crater, spreading mud in a 5-m radius.]

Information Contacts: VSI.


August 1996 (BGVN 21:08) Citation IconCite this Report

During May, "smoke" in vicinity reaches 10-km altitude

On the morning of 5 May 1996, Qantas Airlines reported "smoke" over Sumatra near Sorikmarapi to just above 10 km altitude. However, in a satellite pass about 2 hours earlier there was no evidence of an eruption.

Information Contacts: Bureau of Meteorology, Northern Territory Regional Office, P.O. Box 735, Darwin NT 0801, Australia.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Eruptive History

There is data available for 7 confirmed Holocene eruptive periods.

[ 1996 May 5 ] Uncertain Eruption

Episode 1 | Eruption Episode
1996 May 5 - Unknown Evidence from Unknown

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion Uncertain
   - - - -    - - - - Volcanic "smoke"

1986 Jul 5 - 1986 Jul 14 Confirmed Eruption Max VEI: 1

Episode 1 | Eruption Episode
1986 Jul 5 - 1986 Jul 14 Evidence from Observations: Reported

List of 4 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity weak or small
   - - - -    - - - - Ash
   - - - -    - - - - Earthquakes (undefined)
1986 Jul 5    - - - - VEI (Explosivity Index)

1970 Jul 2 ± 182 days Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode
1970 Jul 2 ± 182 days - Unknown Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Explosion
   - - - -    - - - - Ash
1970    - - - - VEI (Explosivity Index)

1917 May 20 - 1917 May 20 Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode
1917 May 20 - 1917 May 20 Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity
   - - - -    - - - - Ash
1917 May 20    - - - - VEI (Explosivity Index)

1893 Jan 4 - 1893 Jan 4 Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode East flank (Sibanggor Julu)
1893 Jan 4 - 1893 Jan 4 Evidence from Observations: Reported

List of 3 Events for Episode 1 at East flank (Sibanggor Julu)

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity
   - - - -    - - - - Blocks
1893 Jan 4    - - - - VEI (Explosivity Index)

1892 May 21 Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode Summit and east flank (Jurang Siunik)
1892 May 21 - Unknown Evidence from Observations: Reported

List of 6 Events for Episode 1 at Summit and east flank (Jurang Siunik)

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity
   - - - -    - - - - Earthquakes (undefined) Before.
   - - - -    - - - - Lahar or Mudflow
   - - - -    - - - - Property Damage
1892 May 21    - - - - Fatalities
1892 May 21    - - - - VEI (Explosivity Index)

[ 1888 Feb ] Uncertain Eruption

Episode 1 | Eruption Episode
1888 Feb - Unknown Evidence from Unknown

List of 1 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Volcanic "smoke"

1879 Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode
1879 - Unknown Evidence from Observations: Reported

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity
1879    - - - - VEI (Explosivity Index)

[ 1866 ] Uncertain Eruption

Episode 1 | Eruption Episode
1866 - Unknown Evidence from Unknown

List of 2 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Volcanic "smoke"
   - - - -    - - - - Earthquakes (undefined)

1829 (?) Confirmed Eruption Max VEI: 2

Episode 1 | Eruption Episode
1829 (?) - Unknown Evidence from Observations: Reported

List of 4 Events for Episode 1

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Phreatic activity
   - - - -    - - - - Ash
   - - - -    - - - - Bombs
1829
(?)
   - - - - VEI (Explosivity Index)
Deformation History

There is no Deformation History data available for Sorikmarapi.

Emission History

There is no Emissions History data available for Sorikmarapi.

GVP Map Holdings

Maps are not currently available due to technical issues.

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included.

Smithsonian Sample Collections Database

There are no samples for Sorikmarapi in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites