HR: 16:20h
AN: V44A-01 INVITED     [Abstracts]
TI: Ground-Based Infrared and Ultra-Violet Imaging of Volcanic Gases and Particles
AU: * Prata, F J
EM: fred.prata@nilu.no
AF: Norwegian Institute for Air Research, Institutveien 18, Kjeller, 2027, Norway
AB: Monitoring the emissions from volcanoes can be done effectively and in a quantitative manner using advanced imaging technology in the infrared and ultra-violet. Infrared cameras exploit relatively cheap microbolometer arrays with low noise and high capture rates to permit identification of particulate and gaseous emissions up to 5-10 km away during the day and night. UV systems utilize CCD arrays with high quantum efficiencies and capabilities of measuring SO2 flux rates during the daytime. The retrieval of particle microphysics and gas amounts from these cameras is described and some results from monitoring volcanoes in South America and the Pacific are presented. It is suggested that fused systems which incorporate imaging cameras with high- spectral resolution spectrometers and FT-IRs hold great promise for the future of ground-based volcano monitoring.
DE: 3359 Radiative processes
DE: 3360 Remote sensing
DE: 8485 Remote sensing of volcanoes
DE: 8494 Instruments and techniques
SC: Volcanology, Geochemistry, and Petrology [V]
MN: 2007 Joint Assembly