Gaua volcano (Banks Islands, Vanuatu) - Smithsonian / USGS Weekly Volcanic Activity Report for 27 January-2 February 2010 (Continuing Activity)

On 29 January, the Vanuatu Geohazards Observatory reported significant changes in Gaua's activity over the previous two weeks. They noted that since 16 January more gas was emitted and multiple explosions produced denser and darker ash plumes. During 22-29 January, the water level in the river to the E that Lake Letas feeds rose 10 cm.
Gas-and-ash plumes rose 3 km and drifted S and W. On 24 January nearby villagers reported seeing ejected material from Strombolian activity. The Wellington VAAC reported that on 27 January an ash cloud was seen on satellite imagery.
Strong explosions were seen and heard from East Gaua on 29 January. According to the VAAC, the Vanuatu Geohazards Observatory reported that gas-and-ash plumes rose to altitudes of 3 km (10,000 ft) a.s.l. and drifted S and W that same day.

Sources: Vanuatu Meteorology and Geo-Hazards Department (VMGD), Wellington Volcanic Ash Advisory Center (VAAC)
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From: Global Volcanism Program, 2010. Report on Gaua. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 27 January-2 February 2010. Smithsonian Institution and US Geological Survey.