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.

28 March 2012              Back to Top

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.

Sources: Center of Volcanology and Geological Hazard Mitigation (CVGHM)

7 December 2011              Back to Top

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.

Sources: Center of Volcanology and Geological Hazard Mitigation (CVGHM)

Below is a summary of eruption dates and Volcanic Explosivity Indices (VEI).

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

Sukhyar R, 1989. Geochemistry and petrogenesis of arc rocks from Dieng, Sundoro and Sumbing volcanic complexes, central Java, Indonesia. {Unpublished PhD thesis}, Monash University, 319 p

Sukhyar R, Sumartadipura N S, Erfan R D, 1992. Geologic map of Sundoro volcano, central Java. {Volc Surv Indonesia}, 1:50,000 geol map

Taverne N J M, 1926. Vulkanstudien op Java. {Vulk Meded}, 7: 1-132

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.