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A comparison of SO2 retrieval techniques using mini-UV spectrometers and ASTER imagery at Lascar volcano, Chile

Bulletin of Volcanology volume 74, pages 589–594 (2012)Cite this article

Abstract

The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is a useful tool for detecting low quantities of sulfur dioxide at passively degassing volcanoes such as Lascar volcano, Chile. Two mini-UV spectrometers (MUSes) were used to make transects of Lascar volcano’s sulfur dioxide plume on December 7, 2004, during a coordinated overpass of ASTER. SO2 burdens were retrieved using the thermal infrared channels of the acquired ASTER image. This allowed for a direct comparison between the two methods in order to validate the ASTER SO2 retrieval. The results were extremely encouraging with ASTER deriving SO2 fluxes within the range of fluxes obtained by the MUSe.

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Authors and Affiliations

  1. Geological Engineering Sciences, Michigan Technological University, Houghton, MI, USA

    L. A. Henney & I. M. Watson

  2. Department of Geology, University of Puerto Rico–Mayagüez Campus, Mayagüez, Puerto Rico

    L. A. Rodríguez

  3. Department of Earth Sciences, University of Bristol, Bristol, UK

    I. M. Watson

Authors
  1. L. A. Henney
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  2. L. A. Rodríguez
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  3. I. M. Watson
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Correspondence to L. A. Henney.

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Editorial responsibility: A. Harris

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Henney, L.A., Rodríguez, L.A. & Watson, I.M. A comparison of SO2 retrieval techniques using mini-UV spectrometers and ASTER imagery at Lascar volcano, Chile. Bull Volcanol 74, 589–594 (2012). https://doi.org/10.1007/s00445-011-0552-2

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  • DOI: https://doi.org/10.1007/s00445-011-0552-2

Keywords

  • Sulfur dioxide
  • ASTER
  • MUSe
  • Lascar volcano

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