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Report on Ruang (Indonesia) — 3 June-9 June 2015


Ruang

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 3 June-9 June 2015
Managing Editor: Sally Sennert.

Please cite this report as:

Global Volcanism Program, 2015. Report on Ruang (Indonesia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 3 June-9 June 2015. Smithsonian Institution and US Geological Survey.

Weekly Report (3 June-9 June 2015)

Ruang

Indonesia

2.3°N, 125.37°E; summit elev. 725 m

All times are local (unless otherwise noted)


PVMBG reported that seismicity at Ruang decreased from 14 March through 2 June. Emissions were unobserved during periods of clear weather from 1 May through 2 June. The Alert Level was lowered to 1 (on a scale of 1-4) on 3 June. Residents and tourists were warned not to approach the active craters.

Geological Summary. Ruang volcano is the southernmost volcano in the Sangihe Island arc, north of Sulawesi Island; it is not the better known Raung volcano on Java. The 4 x 5 km island volcano is 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)