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Automated, high time-resolution measurements of SO2 flux at Soufrière Hills Volcano, Montserrat

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Abstract

We report here the first results from an automated, telemetered UV scanning spectrometer system for monitoring SO2 emission rates at Soufrière Hills Volcano, Montserrat. Two spectrometers receive light by way of a motor-driven stepping prism and telescope in order to make vertical scans of the volcanic plume. Spectral data from these spectrometers, situated 2,800 m apart and 4,500 m from the volcano, are relayed back to the observatory every 4–5 s via radio modems. A full scan of the plume is accomplished every 1–6 min by the (time-synchronised) spectrometers and a SO2 emission rate is calculated using the SO2 slant concentrations, scan angles and plume speeds estimated from the wind speed from a telemetered weather station near to the volcano. The plume's position and dimensions are calculated using the angular data from the two spectrometers. The plume height varies significantly diurnally and seasonally and is important in order to minimise the error on SO2 emission rates. The new scanning system (Scanspec) provides SO2 emission rates from 08:00 to 16:00 h local time every day. Preliminary results highlight a number of features of the SO2 time series and plume dynamics and give our first indications of the errors and limits of detection of this system. SO2 emission rates vary widely on all time scales (minutes, days, months). This new system has already provided the first real and consistent indication that SO2 emission rates vary on a minutes to hours basis, which can be correlated with volcanic activity (for example, rockfall and pyroclastic flow activity). It is anticipated that this system at Soufrière Hills will yield information on shallow processes occurring on short time scales (periods of minutes to hours) as well as deep processes relating to magma supply rates, which will be associated with longer wavelength SO2 signals of weeks to months.

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References

  • Allard P, Carbonnelle J, Dajlevic D, Le Bronec J, Morel P, Maurenas JM, Robe MC, Faivre-Pierret R, Sabroux JC, Zettwoog P (1991) Eruptive and diffuse emissions of carbon dioxide from Etna volcano. Nature 351:387–391

    CAS  Google Scholar 

  • Baptie B, Luckett R, Neuberg J (2002) Variability of seismic tremor episodes at Soufrière Hills Volcano, Montserrat. In: Druitt TH, Kokelaar BP (eds) The eruption of the Soufrière Hills Volcano, Montserrat, from 1995 to 1999. Geological Society London, Memoir, pp 611–620

  • Beychok MR (1995) Fundamentals of stack gas dispersion, 3rd edn. Milton R Beychok, Irvine, California

  • Caltabiano T, Romano R, Budetta G (1994) SO2 flux measurements at Mount Etna, Italy. J Geophys Res 99:12809–12819

    CAS  Google Scholar 

  • Casadevall TJ, Johnston DA, Harris DM, Rose WI, Malinconcio LL, Stoiber RE, Bornhorst TJ, Williams SN, Woodruff, Laurel, Thompson JM (1981) SO2 emission rates at Mount St. Helens from March 29 through December, 1980. In: Lipman PW, Mullineaux DL (eds) The 1980 eruptions of Mount St. Helens, Washington. US Geol Surv Prof Pap 1250:193–200

    CAS  Google Scholar 

  • Cashman K, Blundy J (2000) Degassing and crystallisation of ascending andesite and dacite. Phil Trans R Soc Lond A 358:50–54

    Article  Google Scholar 

  • Chartier TA, Rose WI, Stokes JB (1987) Detailed record of SO2 emissions from Pu`u `O`o between episodes 33 and 34 of the 1983–86 east rift zone eruption of Kilauea, Hawaii. Bull Volcanol 50:215–228

    Google Scholar 

  • Couch S, Sparks RSJ, Carroll MR (2001) Mineral disequilibrium in lavas explained by convective self-mixing in open magma chambers. Nature 411:1037–1039

    Article  CAS  PubMed  Google Scholar 

  • Denlinger RP, Hoblitt RP (1999) Cyclic eruptive behaviour of silicic volcanoes. Geology 27:459–462

    Google Scholar 

  • Druitt TH, Young SR, Baptie B, Bonadonna C, Calder ES, Clarke AB, Cole PD, Harford CL, Herd RA, Luckett R, Ryan G, Voight B (2002) Episodes of Vulcanian explosive activity with fountain collapse at Soufrière Hills Volcano, Montserrat. In: Druitt TH, Kokelaar BP (eds) The eruption of the Soufriere Hills Volcano from 1995 to 1999, Montserrat, Antilles. Memoir of the Geological Society of London, pp 281–306

  • Edmonds M, Pyle DM, Oppenheimer CM (2001) A model for degassing at Soufrière Hills Volcano, Montserrat, West Indies based on geochemical data. Earth Planet Sci Lett 186:159–173

    Article  CAS  Google Scholar 

  • Edmonds M, Oppenheimer C, Pyle DM, Herd RA, Thompson G (2003) SO2 emissions from Soufrière Hills Volcano and their relationship to conduit permeability, hydrothermal interaction and degassing regime. J Volcanol Geotherm Res 124 (1-2): 23-43. DOI:10.1016/S0377-0273(03)00041-6

    Google Scholar 

  • Fischer TP, Arehart GB, Sturchio NC, Williams SN (1997) The relationship between fumarole gas composition and eruptive activity at Galeras Volcano, Colombia. Geology 24:531–534

    Article  Google Scholar 

  • Galle B, Oppenheimer CM, Geyer A, McGonigle A, Edmonds M (2003) A mini-DOAS spectrometer applied in remote sensing of volcanic SO2 emissions. J Volcanol Geotherm Res 119(1–4):241–254

    Google Scholar 

  • Kyle PR, Sybeldon LM, McIntosh WC, Meeker K, Symonds RB (1994) Sulfur dioxide emission rates from Mount Erebus, Antarctica. In: Kyle PR (ed) Volcanological and environmental studies of Mount Erebus, Antarctica. Antarctic Res Ser 66:69–82

    Google Scholar 

  • Malinconico LL (1979) Fluctuations in SO2 emission during recent eruptions of Etna. Nature 278:43–45

    CAS  Google Scholar 

  • Melnik O, Sparks RSJ (1999) Non-linear dynamics of lava dome extrusion. Nature 402:37–41

    Google Scholar 

  • Murphy MD, Sparks RSJ, Barclay J, Carroll MR, Lejeune AM, Brewer TS, Macdonald R, Black S, Young S (1998) The role of magma mixing in triggering the current eruption at the Soufrière Hills volcano, Montserrat, West Indies. Geophys Res Lett 25(18):3433–3436

    CAS  Google Scholar 

  • Neuberg J, O'Gorman C (2002) A model of the seismic wavefield in gas-charged magma: application to Soufrière Hills Volcano, Montserrat. In: Druitt TH, Kokelaar BP (eds) The eruption of the Soufrière Hills Volcano, Montserrat, from 1995 to 1999. Geological Society London, Memoir pp 603–610

  • Norton GE, Herd RA, Watts R, Aspinall WP, Young SR, Bonadonna C, Baptie B, Edmonds M, Harford C, Jolly AD, Loughlin SC, Luckett R, Mattioli G, Sparks RSJ (2002) Pyroclastic flow and explosive activity of the lava dome of Soufrière Hills Volcano, Montserrat, during a period of no magma extrusion (March 1998 to November 1999). In: Druitt TH, Kokelaar BP (eds) The eruption of the Soufrière Hills Volcano, Montserrat, from 1995 to 1999. Geological Society London, Memoir pp 467–482

  • Oppenheimer CM, Francis PW, Stix J (1998) Depletion rates of SO2 in tropospheric plumes. Geophys Res Lett 25:2671–2674

    CAS  Google Scholar 

  • Oppenheimer CM, Edmonds M, Francis P, Burton M (2002) Variation in HCl:SO2 gas ratios at Soufrière Hills Volcano observed by Fourier Transform Spectroscopy, 1996–1999. In: Druitt TH, Kokelaar BP (eds) The eruption of the Soufriere Hills Volcano from 1995 to 1999, Montserrat, Antilles. Geological Society London, Memoir pp 621–639

  • Platt U (1994) Differential optical absorption spectroscopy (DOAS). In: Sigrist MW (ed) Air monitoring by spectroscopic techniques, vol 127. Wiley, Chichester, pp 27–84

  • Platt U, Perner D (1983) Measurements of atmospheric trace gases by long path differential UV/visible absorption spectroscopy. Springer, Berlin Heidelberg New York, Ser Opt Sci 39:95–105

  • Robertson REA, Aspinall WP, Herd RA, Norton GE, Sparks RSJ, Young SR (2000) The 1995–98 eruption of the Soufrière Hills volcano, Montserrat, WI. Phil Trans R Soc Lond 358(1770):1619–1638

    Article  Google Scholar 

  • Scaillet B, Clemente B, Evans BW, Pichavant M (1998) Redox control of sulphur degassing in silicic magmas. J Geophys Res 103:23937–23949

    CAS  Google Scholar 

  • Sparks RSJ (1997) Causes and consequences of pressurisation in lava dome eruptions. Earth Planet Sci Lett 150:177–189

    CAS  Google Scholar 

  • Sparks RSJ, Murphy MD, Lejeune AM, Watts RB, Barclay J, Young SR (2000) Control on the emplacement of the andesite lava dome of the Soufrière Hills volcano by degassing-induced crystallisation. Terra Nova 12:14–20

    Article  Google Scholar 

  • Sparks RSJ, Barclay J, Calder ES, Herd RA, Luckett R, Norton GE, Ritchie LJ, Voight B, Young SR, Woods AW (2002) Generation of a debris avalanche and violent pyroclastic density currents on 26 December (Boxing Day) 1997 at Soufrière Hills Volcano, Montserrat. In: Druitt TH, Kokelaar BP (eds) The eruption of the Soufrière Hills Volcano, Montserrat, from 1995 to 1999. Geological Society London, Memoir pp 409–434

  • Stix J, Zapata GJA, Calvache VM, Cortes JGP, Fischer TP, Gomez MD, Narvaez ML, Ordonez VM, Ortega EA, Torres CR, Williams SN (1993) A model of degassing at Galeras Volcano, Colombia, 1988–1993. Geology 21:963–967

    Article  CAS  Google Scholar 

  • Stoiber RE, Malinconico LL, Williams SN (1983) Use of the correlation spectrometer at volcanoes. In: Tazieff H, Sabroux JC (eds) Forecasting volcanic eruptions. Elsevier, Amsterdam, pp 425–444

  • Vandaele AC, Simon PC, Guilmot JM, Carleer M, Colin R (1994) SO2 absorption cross section measurements in the UV using a Fourier transform spectrometer. J Geophys Res 99:25599–25605

    Google Scholar 

  • Watson IM, Oppenheimer C, Voight B, Francis PW, Clarke A, Stix J, Miller AD, Pyle DM, Burton MR, Young SR, Norton G, Loughlin S, Darroux B (2000) The relationship between degassing and ground deformation at Soufrière Hills volcano, Montserrat. J Volcanol Geotherm Res 98:117–126

    Article  CAS  Google Scholar 

  • White RA, Miller AD, Lynch LL, Power J (1998) Observations of hybrid seismic events at Soufriere Hills Volcano, Montserrat: July 1995 to September 1996. Geophys Res Lett 25(19):3657–3660

    Google Scholar 

  • Young SR, Sparks RSJ, Aspinall WP, Lynch LL, Miller AD, Robertson REA, Shepherd JB (1998a) Overview of the eruption of Soufrière Hills Volcano, Montserrat, July 18, 1995, to December 1997. Geophys Res Lett 25(18):3389–3392

    Article  Google Scholar 

  • Young SR, Francis PW, Barclay J, Casadevall T, Gardner CA, Darroux B, Davies MA, Delmelle P, Norton GE, Maciejewski AAM, Oppenheimer CM, Stix J, Watson IM (1998b) Monitoring SO2 emission at the Soufrière Hills Volcano: implications for changes in eruptive conditions. Geophys Res Lett 25(19):3681–3684

    Article  CAS  Google Scholar 

  • Young SR, Voight B, Duffell HJ, Baptie BP, Jolly AD, Syers RC, Thompson G (2003) Magma extrusion dynamics revealed by high-frequency gas monitoring at Soufrière Hills Volcano, Montserrat. J Geol Soc Lond Spec Publ (in press)

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Acknowledgements

This paper is published with the permission of the director of the British Geological Survey, UK, and Peter Dunkley is acknowledged for his review. Patrick Allard is thanked for his excellent review, which improved the paper considerably. MVO and BGS are acknowledged for permission to publish these data. C.M.O. gratefully acknowledges support from the EC Framework 5 project 'MULTIMO'. The use of trade names in this paper does not imply endorsement by MVO. Rob Waterbury, from Ocean Optics, is acknowledged for his invaluable advice.

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Authors and Affiliations

  1. , Montserrat Volcano Observatory, Flemmings, Salem, Montserrat, West Indies

    M. Edmonds & R. A. Herd

  2. Chalmers University of Technology, Gothenburg, Sweden

    B. Galle

  3. Department of Geography, Cambridge University, Downing Place, Cambridge , CB2 3EQ, UK

    C. M. Oppenheimer

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  1. M. Edmonds
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  2. R. A. Herd
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  3. B. Galle
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  4. C. M. Oppenheimer
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Correspondence to M. Edmonds.

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Editorial responsibility: T.H. Druitt

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Edmonds, M., Herd, R.A., Galle, B. et al. Automated, high time-resolution measurements of SO2 flux at Soufrière Hills Volcano, Montserrat. Bull Volcanol 65, 578–586 (2003). https://doi.org/10.1007/s00445-003-0286-x

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