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Report on Ranakah (Indonesia) — November 1989


Scientific Event Alert Network Bulletin, vol. 14, no. 11 (November 1989)
Managing Editor: Lindsay McClelland.

Ranakah (Indonesia) Dome growth apparently ended; solfatara plume

Please cite this report as:

Global Volcanism Program, 1989. Report on Ranakah (Indonesia) (McClelland, L., ed.). Scientific Event Alert Network Bulletin, 14:11. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198911-264071



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

All times are local (unless otherwise noted)

In November 1989, a white plume rose to 25 m above the solfatara field between the new Anak Ranakah dome and the older [Gunung] Ranakah. A seismograph recorded 121 distant and 15 local tectonic earthquakes, eight A-type and two B-type shocks, and 87 collapse events.

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.