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Report on Ruang (Indonesia) — 30 October-5 November 2002

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 30 October-5 November 2002
Managing Editor: Gari Mayberry

Please cite this report as:

Global Volcanism Program, 2002. Report on Ruang (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 30 October-5 November 2002. Smithsonian Institution and US Geological Survey.

Volcano Profile |  Weekly Report (30 October-5 November 2002)


Ruang

Indonesia

2.3°N, 125.37°E; summit elev. 725 m

All times are local (unless otherwise noted)


During 21-27 October, a thick low-level ash plume infrequently rose above Ruang. Rainfall on 23 October caused lahars to flow down the volcano's flanks during 1445-1545. Ruang remained at Alert Level 2 (on a scale of 1-4).

Geologic Background. Ruang volcano, not to be confused with the better known Raung volcano on Java, is the southernmost volcano in the Sangihe Island arc, north of Sulawesi Island. The 4 x 5 km island volcano rises to 725 m across a narrow strait SW of the larger Tagulandang Island. The summit contains a crater partially filled by a lava dome initially emplaced in 1904. Explosive eruptions recorded since 1808 have often been accompanied by lava dome formation and pyroclastic flows that have damaged inhabited areas.

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