Global Volcanism Program | Volcanic Activity Report on Sorikmarapi (Indonesia)

Volcanic Activity Report on Sorikmarapi (Indonesia) — 28 December-3 January 2012

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 28 December-3 January 2012
Managing Editor: Sally Sennert

Please cite this report as:

Global Volcanism Program, 2011. Report on Sorikmarapi (Indonesia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 28 December-3 January 2012. Smithsonian Institution and US Geological Survey. https://volcano.si.edu/showreport.cfm?gvpvar=GVP.WVAR20111228-261120

Sorikmarapi

Indonesia

All times are local (unless otherwise noted)

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)

Geological Summary. Sorikmarapi is a forested stratovolcano with a 600-m-wide summit crater containing a lake and substantial sulfur deposits. A smaller upper SE flank crater (Danau Merah) 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 E flank. Phreatic eruptions have occurred from summit and flank vents during the 19th and 20th centuries.