USGS
12th October 2011, 22:20
Based on a pilot report, the Darwin VAAC reported that on 11 October an ash plume from Marapi rose to an altitude of 3.7 km (12,000 ft) a.s.l. Ash was not identified in satellite imagery.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
More... (http://www.volcano.si.edu/reports/usgs/index.cfm?wvarweek=20111005#marapi)
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
More... (http://www.volcano.si.edu/reports/usgs/index.cfm?wvarweek=20111005#marapi)