Report on Lopevi (Vanuatu) — August 2009
Bulletin of the Global Volcanism Network, vol. 34, no. 8 (August 2009)
Managing Editor: Richard Wunderman.
Lopevi (Vanuatu) Gray plume seen by pilot on 24 February 2008
Please cite this report as:
Global Volcanism Program, 2009. Report on Lopevi (Vanuatu) (Wunderman, R., ed.). Bulletin of the Global Volcanism Network, 34:8. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN200908-257050.
16.507°S, 168.346°E; summit elev. 1413 m
All times are local (unless otherwise noted)
Our previous report on Lopevi (BGVN 32:05) noted eruptions and thermal anomalies in April and May 2007. No additional thermal anomalies were observed by MODVOLC's satellite system from 14 May 2007 through 25 September 2009.
Based on a pilot report, the Wellington Volcanic Ash Advisory Centre reported that at 1404 on 24 February 2008, a thick grayish plume from Lopevi rose to an altitude below 3 km and drifted 9 km E. Volcanic ash was not visible on satellite imagery. By 1650 activity was subsiding, and the plume was lower. At 0732 on 25 February the pilot did not detect any significant activity.
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.
Information Contacts: NASA Earth Observatory (URL: http://earthobservatory.nasa.gov/); Hawai'i Institute of Geophysics and Planetology (HIGP) Thermal Alerts System, School of Ocean and Earth Science and Technology (SOEST), Univ. of Hawai'i, 2525 Correa Road, Honolulu, HI 96822, USA (URL: http://modis.higp.hawaii.edu/); Wellington Volcanic Ash Advisory Centre (VAAC), Meteorological Service of New Zealand Ltd (MetService), PO Box 722, Wellington, New Zealand (URL: http://www.metservice.com/vaac/, http://vaac.metservice.com/).