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Report on Kadovar (Papua New Guinea) — 24 October-30 October 2018


Kadovar

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 24 October-30 October 2018
Managing Editor: Sally Sennert.

Please cite this report as:

Global Volcanism Program, 2018. Report on Kadovar (Papua New Guinea) (Sennert, S, ed.). Weekly Volcanic Activity Report, 24 October-30 October 2018. Smithsonian Institution and US Geological Survey.

Weekly Report (24 October-30 October 2018)

Kadovar

Papua New Guinea

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

All times are local (unless otherwise noted)


The Darwin VAAC reported that during 29-30 October intermittent ash plumes from Kadovar rose to altitudes of 1.8-2.1 km (6,000-7,000 ft) a.s.l. and drifted SW, S, and SE.

Geological Summary. The 2-km-wide island of Kadovar is the emergent summit of a Bismarck Sea stratovolcano of Holocene age. It 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. Prior to an eruption that began in 2018, a lava dome formed the high point of the andesitic volcano, filling an arcuate landslide scarp open to the south; 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. A period of heightened thermal phenomena took place in 1976. An eruption began in January 2018 that included lava effusion from vents at the summit and at the E coast.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)