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Report on Ranakah (Indonesia) — August 1988


Ranakah

Scientific Event Alert Network Bulletin, vol. 13, no. 8 (August 1988)
Managing Editor: Lindsay McClelland.

Ranakah (Indonesia) Lava production slows

Please cite this report as:

Global Volcanism Program, 1988. Report on Ranakah (Indonesia) (McClelland, L., ed.). Scientific Event Alert Network Bulletin, 13:8. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198808-264071



Ranakah

Indonesia

8.637°S, 120.5302°E; summit elev. 2288 m

All times are local (unless otherwise noted)


Lava production had been gradually declining for several months and continued to decrease during August. Collapse of incandescent material was no longer visible, although collapse episodes were recorded seismically an average of six times daily, down from an average of 40-50/day in July. Tectonic earthquakes also averaged 6/day, but no volcanic seismicity was registered.

Geological Summary. The Anak Ranakah (Child of Ranakah) lava dome was formed in 1987 in an area without previous recorded eruptions at the base of the large older lava dome of Gunung Ranakah. An arcuate group of lava domes extending about 12 km west from Gunung Ranakah to Poco Mandosawa occurs on the outer N flanks of the poorly known Poco Leok caldera on western Flores Island.

Information Contacts: VSI.