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Report on Ranakah (Indonesia) — March 1991

Bulletin of the Global Volcanism Network, vol. 16, no. 3 (March 1991)
Managing Editor: Lindsay McClelland.

Ranakah (Indonesia) Weak ash emissions

Please cite this report as:

Global Volcanism Program, 1991. Report on Ranakah (Indonesia) (McClelland, L., ed.). Bulletin of the Global Volcanism Network, 16:3. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN199103-264071.

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8.62°S, 120.52°E; summit elev. 2350 m

All times are local (unless otherwise noted)

Periodic weak ash emissions (15-20 m high) continued in March from cracks in the lava dome, although no dome growth was noted. Averages of five tectonic earthquakes, two volcanic earthquakes, and one earthquake associated with dome collapse, were recorded daily.

Geologic Background. A new lava dome, named Anak Ranakah (Child of Ranakah) was formed in 1987 in an area without previous historical eruptions at the base of the large older lava dome of Gunung Ranakah. An arcuate group of lava domes extending westward from Gunung Ranakah occurs on the outer flanks of the poorly known Poco Leok caldera on western Flores Island. Pocok Mandosawa lava dome, at 2350 m the highest point on the island of Flores, lies west of Anak Ranakah.

Information Contacts: W. Modjo, VSI; AP.