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Report on Kadovar (Papua New Guinea) — July 1977

Natural Science Event Bulletin, vol. 2, no. 7 (July 1977)
Managing Editor: David Squires.

Kadovar (Papua New Guinea) No significant changes in the thermal area

Please cite this report as:

Global Volcanism Program, 1977. Report on Kadovar (Papua New Guinea). In: Squires, D (ed.), Natural Science Event Bulletin, 2:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.NSEB197707-251002.

Volcano Profile |  Complete Bulletin


Kadovar

Papua New Guinea

3.608°S, 144.588°E; summit elev. 365 m

All times are local (unless otherwise noted)


"Three detailed investigations have been made since the March report: 25-28 April (Cooke, Norris) 72 hours of seismic recording, gas condensates collected, temperatures measured, and magnetic field re-surveyed; 7-8 June (Dent) 30 hours seismic recording, temperatures measured, and gas and gas condensates collected; and 7-8 July (Wallace, Norris, Emeleus) 30 hours seismic recording, temperatures measured, gas and gas condensates collected, and magnetic field re-surveyed.

"The main thermal area has been little changed during this period. The original fumarole of last September shows the same degree of activity as it did then. Volcano-seismic activity was virtually nil. Maximum temperatures were still 99-100°C but there may have been slight changes in the magnetic field pattern. The only features presently indicating continued development are weak thermal areas that are still being established in new areas on other parts of the island. Some of the population have returned, contrary to a previous report, but they have established a new settlement in a comparatively safe area, having abandoned their old village site."

Geologic Background. The 2-km-wide island of Kadovar is the emergent summit of a Bismarck Sea stratovolcano of Holocene age. Kadovar is part of the Schouten Islands, and lies off the coast of New Guinea, about 25 km N of the mouth of the Sepik River. The village of Gewai is perched on the crater rim. A 365-m-high lava dome forming the high point of the andesitic volcano fills an arcuate landslide scarp that is open to the south, and submarine debris-avalanche deposits occur in that direction. Thick lava flows with columnar jointing forms low cliffs along the coast. The youthful island lacks fringing or offshore reefs. No certain historical eruptions are known; the latest activity was a period of heightened thermal phenomena in 1976.

Information Contacts: D. Wallace, RVO.