HR: 0800h
AN: V11D-0814    [Abstracts]
TI: In-situ spectroscopy of the surface of Mount Etna for remote sensing data validation and interpretation
AU: * Amici, S
EM: amici@ingv.it
AF: INGV Roma, Via Vigna Murata, 605, Roma, 00143, Italy
AU: Sgavetti, M
EM: maria.sgavetti@unipr.it
AF: Parma University, Viale G.P. Usberti 157A, Parma, 43100, Italy
AU: Carli, C
EM: cc.carli@libero.it
AF: Parma University, Viale G.P. Usberti 157A, Parma, 43100, Italy
AU: Burton, M
EM: burton@ct.ingv.it
AF: INGV Catania, Piazza Roma, 2, Catania, 95123, Italy
AU: La Spina, A
EM: laspina@ct.ingv.it
AF: INGV Catania, Piazza Roma, 2, Catania, 95123, Italy
AU: Neri, M
EM: neri@ct.ingv.it
AF: INGV Catania, Piazza Roma, 2, Catania, 95123, Italy
AB: Mount Etna volcano is the tallest and most active of European volcanoes. It is characterised by four craters (Northeast Crater, Voragine, Bocca Nuova, Southeast Crater) with a highest point at 3315m elevation. Eruptions are frequently observed on Etna, and are typical of basaltic volcanism, consisting of voluminous lava flows and ash-generating explosions. Since the late 1970s, summit eruptions have shown an increase in their intensity, with a high rate of short-lived paroxysmal eruptive episodes. Such events commonly produce lava fountains that reach heights of many hundred metersand are accompanied by the generation of abundant tephra and scoriae that can fall tens of kilometers away from the volcano. The surface of Etna is highly dynamic, changing rapidly as lava flows are emplaced, ash falls deposit and pyroclastic cones grow. Such a system has naturally become the focus of air- and space-borne remote sensing studies, focussed on detecting thermal anomalies and measuring volcanic gas emissions. The efficicacy of such studies is strongly dependent on accurate studies of the wavelength-dependent emissivity and reflectance of surface rocks. In order to obtain improved constraints on these parameters for Etna we conducted a campaign of on-situ measurements on Etna in July, 2007. A series of target sites, representative of the both the present-day and oldest volcanic surfaces, were geologically and spectrally characterized. Measurements were made using an ASD FieldSpec Pro portable spectrometer operating in the 300-2500nm wavelength range for reflectance while an FTIR Bruker OPAG-22 was used for emissivity measurements. Here we present the preliminary results of the campaign and compare with satellite data.
DE: 5199 General or miscellaneous
DE: 5464 Remote sensing
DE: 8485 Remote sensing of volcanoes
DE: 8494 Instruments and techniques
SC: Volcanology, Geochemistry, Petrology [V]
MN: 2007 Fall Meeting