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Real-time measurement of volcanic SO2 emissions: validation of a new UV correlation spectrometer (FLYSPEC)

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Abstract

A miniaturized, lightweight and low-cost UV correlation spectrometer, the FLYSPEC, has been developed as an alternative for the COSPEC, which has long been the mainstay for monitoring volcanic sulfur dioxide fluxes. Field experiments have been conducted with the FLYSPEC at diverse volcanic systems, including Masaya (Nicaragua), Poás (Costa Rica), Stromboli, Etna and Vulcano (Italy), Villarica (Chile) and Kilauea (USA). We present here those validation measurements that were made simultaneously with COSPEC at Kilauea between March 2002 and February 2003. These experiments, with source emission rates that ranged from 95 to 1,560 t d−1, showed statistically identical results from both instruments. SO2 path-concentrations ranged from 0 to >1,000 ppm-m with average correlation coefficients greater than r 2=0.946. The small size and low cost create the opportunity for FLYSPEC to be used in novel deployment modes that have the potential to revolutionize the manner in which volcanic and industrial monitoring is performed.

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Acknowledgments

This effort was supported by NASA grant NAG5-10640 from the EOS Project Office, the Hawaii Institute of Geophysics and Planetology, and the U. S. Geological Survey, Volcano Hazards Program. This is SDEST contribution No. 6660 and HIGP contribution No. 1408

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Authors and Affiliations

  1. Hawaii Institute of Geophysics and Planetology, University of Hawaii at Manoa, 1680 East-West Rd., 504, Honolulu, Hawaii, 96822, USA

    Keith A. Horton, Harold Garbeil, Peter Mouginis-Mark & John N. Porter

  2. Department of Earth Sciences, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, V5A 1S6, Canada

    Glyn Williams-Jones

  3. U. S. Geological Survey, Hawaiian Volcano Observatory, Hawaii National Park, P.O. Box 51, 51 Crater Rim Drive, Hawaii, 96718-0051, USA

    Tamar Elias & A. Jeff Sutton

  4. Department of Geology, University of Hawai'i at Hilo, 200 W. Kawili St., Hilo, Hawaii, 96720, USA

    Steven Clegg

Authors
  1. Keith A. Horton
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  2. Glyn Williams-Jones
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  3. Harold Garbeil
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  4. Tamar Elias
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  5. A. Jeff Sutton
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  6. Peter Mouginis-Mark
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  7. John N. Porter
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  8. Steven Clegg
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Correspondence to Keith A. Horton.

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Editorial responsibility: A. Woods

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Horton, K.A., Williams-Jones, G., Garbeil, H. et al. Real-time measurement of volcanic SO2 emissions: validation of a new UV correlation spectrometer (FLYSPEC). Bull Volcanol 68, 323–327 (2006). https://doi.org/10.1007/s00445-005-0014-9

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  • DOI: https://doi.org/10.1007/s00445-005-0014-9

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