HR: 0800h
AN: V21A-0385    [Abstracts]
TI: Lava Effusion Rates from Satellite Remote Sensing for Kliuchevskoi Volcano, Kamchatka- Russia in 2007
AU: * Wilson, R A
EM: wilson@gi.alaska.edu
AF: Alaska Volcano Observatory/Geophysical Institute, 903 Koyukuk Dr. University of Alaska Fairbanks, Fairbanks, AK 99775, United States
AU: * Wilson, R A
EM: wilson@gi.alaska.edu
AF: Department of Geology and Geophysics, University of Alaska Fairbanks, Fairbanks, AK 99775, United States
AU: Dehn, J
EM: jdehn@gi.alaska.edu
AF: Alaska Volcano Observatory/Geophysical Institute, 903 Koyukuk Dr. University of Alaska Fairbanks, Fairbanks, AK 99775, United States
AU: Prakash, A
EM: prakash@gi.alaska.edu
AF: Department of Geology and Geophysics, University of Alaska Fairbanks, Fairbanks, AK 99775, United States
AU: Wessels, R
EM: rwessels@usgs.gov
AF: Alaska Volcano Observatory/United States Geological Survey, 4200 University Dr., Anchorage, AK 99508, United States
AB: Kliuchevskoi volcano is the largest and one of the most active volcanoes on the Kamchatka- Peninsula. The most recent eruption from January to August 2007 produced several strombolian eruptions, lava flows, mudflows, and ash plumes. Field-based observations can be dangerous during such activity. Satellite imagery provides safe and relatively inexpensive views of the eruption. To monitor the progress of an eruption effusions rates are calculated from thermal infrared imagery. A volume of lava at a given temperature emits a fixed amount of thermal radiation measured at the satellite. By constraining temperature, volume with time (effusion rate) can be calculated. Effusion rates can give an indication of changes during an eruption, rather than after the activity has decreased or ceased. Effusion rates were consistently greater than 3.0m3/s and reaching to 15.1m3/s. Calculations of effusion rates of Kliuchevskoi were conducted using a two component analysis from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and compared to those made with coarser spatial resolution sensors: Advanced Very High Resolution Radiometer (AVHRR) and Moderate Resolution Imaging Spectroradiometer (MODIS). By constraining effusion rates in near real-time, the potential hazards from the volcano can be effectively mitigated.
DE: 8419 Volcano monitoring (7280)
DE: 8425 Effusive volcanism
DE: 8485 Remote sensing of volcanoes
SC: Volcanology, Geochemistry, Petrology [V]
MN: 2007 Fall Meeting