UV camera measurements of fumarole field degassing (La Fossa crater,Vulcano Island) |
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| Authors: | G Tamburello EP Kantzas AJS McGonigle A Aiuppa G Giudice |
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| Institution: | 1. Department of Earth Sciences, College of Science, Ibaraki University, 2-1-1 Bunkyo, Mito 310-8512, Japan;2. Institute for Geological and Mining Research (IRGM), Ministry of Scientific Research and Innovation (MINRESI), PO Box 4110, Yaoundé, Cameroon;3. Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan;4. Kagoshima University, Korimoto, Kagoshima City, Kagoshima 890-0065, Japan;5. Faculty of Science, Kobe University, Hyogo 657-8501, Japan;6. Department of Mines, Ministry of Mines, Industry and Technological Development, PO Box 70, Yaoundé, Cameroon;7. Department of Chemistry, Tokai University, 4-1-1 Kita-kaname, Hiratsuka-shi 259-1292, Japan;8. Department of Environmental Biology and Chemistry, University of Toyama, 3190 Gofuku, Toyama-shi 930-8555, Japan;1. Institute for Mineralogy, Leibniz University of Hannover, Callinstr, 3, Hannover 30167, Germany;2. Institute of Geological Sciences, University of Wroclaw, pl. M. Borna 9, Wroclaw 50205, Poland;1. Dipartimento di Biologia, Ecologia e Scienze della Terra, Università della Calabria, Via P. Bucci 15/B, I-87036 Arcavacata di Rende, CS, Italy;2. Dipartimento di Scienze Biologiche, Geologiche e Ambientali – Sezione di Scienze della Terra, Università di Catania, Corso Italia 57, I-95129 Catania, Italy;3. Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania, Osservatorio Etneo, Piazza Roma 2, I-95125 Catania, Italy;4. Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Palermo, Via U. La Malfa 153, I-90146 Palermo, Italy;1. Geological Survey of Hokkaido, Environmental and Geological Research Department, Hokkaido Research Organization, N19 W12, Kita-ku, Sapporo 060-0819, Japan;2. Hokkaido Research Organization, N19 W11, Kita-ku, Sapporo 060-0819, Japan;1. Istituto Nazionale di Geofisica e Vulcanologia, Pisa, Italy;2. Climate & Atmosphere Department, NILU, Norway;3. University of Heidelberg, Germany;1. Cascades Volcano Observatory, U.S. Geological Survey, 1300 SE Cardinal Ct, Vancouver, WA 98683, USA;2. Alaska Volcano Observatory, U.S. Geological Survey, 4200 University Drive, Anchorage, AK 99508, USA;3. Hawaiian Volcano Observatory, U.S. Geological Survey, 51 Crater Rim Drive, Hawaii Volcanoes National Park, HI 96718, USA;4. Institute of Environmental Physics, University of Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany |
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| Abstract: | The UV camera is becoming an important new tool in the armory of volcano geochemists to derive high time resolution SO2 flux measurements. Furthermore, the high camera spatial resolution is particularly useful for exploring multiple-source SO2 gas emissions, for instance the composite fumarolic systems topping most quiescent volcanoes. Here, we report on the first SO2 flux measurements from individual fumaroles of the fumarolic field of La Fossa crater (Vulcano Island, Aeolian Island), which we performed using a UV camera in two field campaigns: in November 12, 2009 and February 4, 2010. We derived ~ 0.5 Hz SO2 flux time-series finding fluxes from individual fumaroles, ranging from 2 to 8.7 t d?1, with a total emission from the entire system of ~ 20 t d?1 and ~ 13 t d?1, in November 2009 and February 2010 respectively. These data were augmented with molar H2S/SO2, CO2/SO2 and H2O/SO2 ratios, measured using a portable MultiGAS analyzer, for the individual fumaroles. Using the SO2 flux data in tandem with the molar ratios, we calculated the flux of volcanic species from individual fumaroles, and the crater as a whole: CO2 (684 t d?1 and 293 t d?1), H2S (8 t d?1 and 7.5 t d?1) and H2O (580 t d?1 and 225 t d?1). |
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