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Report on Lopevi (Vanuatu) — 25 January-31 January 2006

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 25 January-31 January 2006
Managing Editor: Sally Kuhn Sennert

Please cite this report as:

Global Volcanism Program, 2006. Report on Lopevi (Vanuatu). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 25 January-31 January 2006. Smithsonian Institution and US Geological Survey.

Volcano Profile |  Weekly Report (25 January-31 January 2006)


Lopevi

Vanuatu

16.507°S, 168.346°E; summit elev. 1413 m

All times are local (unless otherwise noted)


Following reports of plumes from Lopevi reaching heights of ~2.7 km (9,000 ft) a.s.l. on 24 and 25 January, the Wellington VAAC reported that plumes of "smoke" rose to ~2.1 km (7,000 ft) a.s.l. on 26 January and drifted S. They also reported that lava flowed down the S flank of the volcano on the 26th.

Geologic Background. The small 7-km-wide conical island of Lopevi, known locally as Vanei Vollohulu, is one of Vanuatu's most active volcanoes. A small summit crater containing a cinder cone is breached to the NW and tops an older cone that is rimmed by the remnant of a larger crater. The basaltic-to-andesitic volcano has been active during historical time at both summit and flank vents, primarily along a NW-SE-trending fissure that cuts across the island, producing moderate explosive eruptions and lava flows that reached the coast. Historical eruptions at the 1413-m-high volcano date back to the mid-19th century. The island was evacuated following major eruptions in 1939 and 1960. The latter eruption, from a NW-flank fissure vent, produced a pyroclastic flow that swept to the sea and a lava flow that formed a new peninsula on the western coast.

Source: Wellington Volcanic Ash Advisory Center (VAAC)