HR: 0800h
AN: V31A-0292    [Abstracts]
TI: Ash cloud detection from satellite data: the strengths and weaknesses as related to eruption source parameters?
AU: Dean, K G
EM: ken.dean@gi.alaska.edu
AF: Alaska Volcano Observatory (AVO)/Geophysical Institute (GI), University of Alaska Fairbanks (UAF, Fairbanks, AK 99775, United States
AU: * Webley, P W
EM: pwebley@gi.alaska.edu
AF: Alaska Volcano Observatory (AVO)/Geophysical Institute (GI), University of Alaska Fairbanks (UAF, Fairbanks, AK 99775, United States
AU: * Webley, P W
EM: pwebley@gi.alaska.edu
AF: Arctic Region Super Computing Center (ARSC), 909 Koyukuk Drive, University of Alaska Fairbanks (UAF), Fairbanks, AK 99775, United States
AB: The detection of volcanic ash clouds using satellite remote sensing data is an important tool used by volcano observatories and volcanic ash advisory centers. Satellite data may be the first source of information routinely available for a known eruption that can be used to characterize plumes. Therefore, accurate measurements of plume characteristics are critical for hazard assessments. Using satellite data, it is possible to determine plume size, height and location, and the presence of volcanic ash. This satellite remote sensing data also record the dynamics of a plume as it evolves over time. Each technique or observation has strengths, weaknesses or limitations and also requires some approximation or assumptions regarding local conditions. Here, we describe information derived from the satellite data, discuss their limitations and suggest how the plume characteristics can be used to validate or adjust eruption source parameters for volcanic ash tracking and dispersion models.
DE: 8400 VOLCANOLOGY
DE: 8419 Volcano monitoring (7280)
DE: 8485 Remote sensing of volcanoes
DE: 8488 Volcanic hazards and risks
DE: 8494 Instruments and techniques
SC: Volcanology, Geochemistry, Petrology [V]
MN: 2007 Fall Meeting