Sorikmarapi

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  • Indonesia
  • Sumatra
  • Stratovolcano
  • 1986 CE
  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 0.686°N
  • 99.539°E

  • 2145 m
    7036 ft

  • 261120
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

28 December-3 January 2012

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 CVGHM



 Available Weekly Reports


2011: December


28 December-3 January 2012

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 CVGHM


7 December-13 December 2011

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 CVGHM


Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1996 May 5 ] [ Unknown ] Uncertain    
1986 Jul 5 1986 Jul 14 Confirmed 1 Historical Observations
1970 Unknown Confirmed 2 Historical Observations
1917 May 20 1917 May 20 Confirmed 2 Historical Observations
1893 Jan 4 1893 Jan 4 Confirmed 2 Historical Observations East flank (Sibanggor Julu)
1892 May 21 Unknown Confirmed 2 Historical Observations Summit and east flank (Jurang Siunik)
[ 1888 Feb ] [ Unknown ] Uncertain    
1879 Unknown Confirmed 2 Historical Observations
[ 1866 ] [ Unknown ] Uncertain    
1829 (?) Unknown Confirmed 2 Historical Observations

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Kusumadinata K, 1979. Data Dasar Gunungapi Indonesia. Bandung: Volc Surv Indonesia, 820 p.

Neumann van Padang M, 1951. Indonesia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 1: 1-271.

Rock N M S, Aldiss D T, Aspden J A, Clarke M C G, Djunuddin A, Kartawa W, Miswar S J, Thompson R, Whandoyo, 1983. Geologic map of the Lubuksikaping quadrangle, Sumatra. Geol Res Devel Centre Indonesia, 1:250,000 map and 60 p text.

Rock N M S, Syah H H, Davis A E, Hutchison D, Styles M T, Lena R, 1982. Permian to Recent volcanism in northern Sumatra, Indonesia: a preliminary study of its distribution, chemistry, and peculiarities. Bull Volc, 45: 127-152.

Sorikmarapi is a forested stratovolcano with a 600-m-wide summit crater containing a crater lake and substantial sulfur deposits. A smaller parasitic crater (Danau Merah) on the upper SE flank also contains a crater lake; these two craters and a series of smaller explosion pits occur along a NW-SE line. Several solfatara fields are located on the eastern flank. Phreatic eruptions have occurred from summit and flank vents during the 19th and 20th centuries.