Geophysical gas monitoring using optical techniques: volcanoes, geothermal fields and mines
Författare
Summary, in English
Optical spectroscopy provides powerful means for studying geophysical gas emissions. An extensive research program in this field has been performed by Swedish researchers in collaboration with European partners during the last 10 years, and a review of the activities and results is given. The techniques suitable for geophysical gas monitoring include the differential absorption lidar (DIAL), differential optical absorption spectroscopy (DOAS), diode laser spectroscopy and gas correlation imaging. Field experiments regarding atomic mercury emissions from geothermal fields were performed with a mobile lidar laboratory in Iceland and in Italy. The atomic mercury concentrations and fluxes from mercury mines were also determined at Abbadia S. Salvatore (Italy) and Almaden. (Spain). The volcanic emissions of sulfur dioxide were studied in four ship-borne campaigns concerning the three Italian volcanoes Mt. Etna, Stromboli and Vulcano. Comparisons between the results from the DIAL and passive techniques (DOAS and correlation spectroscopy) were performed. Infrared spectroscopy for geophysical applications is now being developed and will also be discussed. (C) 2002 Elsevier Science Ltd. All rights reserved.
Avdelning/ar
Publiceringsår
2002
Språk
Engelska
Sidor
245-266
Publikation/Tidskrift/Serie
Optics and Lasers in Engineering
Volym
37
Issue
2-3
Fulltext
- Available as PDF - 815 kB
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Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Ämne
- Atom and Molecular Physics and Optics
Nyckelord
- correlation spectroscopy
- DIAL
- DOAS
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0143-8166