The relationship between degassing and ground deformation at Soufriere Hills Volcano, Montserrat

I M Watson; C Oppenheimer; B Voight; P Francis; A Clarke; J Stix; A Miller; D M Pyle; M R Burton; S R Young; G Norton; S Loughlin; B Darroux; M V O Staff

doi:Doi 10.1016/S0377-0273(99)00187-0

The relationship between degassing and ground deformation at Soufriere Hills Volcano, Montserrat

I M Watson, C Oppenheimer, B Voight, P Francis, A Clarke, J Stix, A Miller, D M Pyle, M R Burton, S R Young, G Norton, S Loughlin, B Darroux, M V O Staff

Research output: Contribution to journal › Article › peer-review

Abstract

We examine the correlations between SO2 emission rate, seismicity and ground deformation in the month prior to the 25 June 1997 dome collapse of the Soufriere Hills Volcano, Montserrat. During this period, the volcano exhibited a pattern of cyclic inflation and deflation with an 8-14 h period. We find that SO2 emission rates, measured by COSPEC, correlate with the amplitude of these tilt cycles, and that higher rates of SO2 emission were associated with stronger ground deformation and enhanced hybrid seismicity. Within tilt cycles, degassing peaks coincide with maximum deformation gradients. Increases in the amount of gas in the magma conduit feeding the dome, probably due to increases in volatile content of ascending magma Volume can account for the observed increases in tilt amplitude, hybrid seismicity and SO2 emission rate. (C) 2000 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	117-126
Number of pages	10
Journal	Journal of Volcanology and Geothermal Research
Volume	98
Issue number	1-4
DOIs	https://doi.org/Doi 10.1016/S0377-0273(99)00187-0
Publication status	Published - 2000

Keywords

degassing-deformation correlation
cyclic activity
cospec
soufriere hills volcano
mount-st-helens
galeras-volcano
real-time
july 1995
so2
eruption
seismicity
sulfur

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Watson, I. M., Oppenheimer, C., Voight, B., Francis, P., Clarke, A., Stix, J., Miller, A., Pyle, D. M., Burton, M. R., Young, S. R., Norton, G., Loughlin, S., Darroux, B., & Staff, M. V. O. (2000). The relationship between degassing and ground deformation at Soufriere Hills Volcano, Montserrat. Journal of Volcanology and Geothermal Research, 98(1-4), 117-126. https://doi.org/Doi 10.1016/S0377-0273(99)00187-0

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title = "The relationship between degassing and ground deformation at Soufriere Hills Volcano, Montserrat",

abstract = "We examine the correlations between SO2 emission rate, seismicity and ground deformation in the month prior to the 25 June 1997 dome collapse of the Soufriere Hills Volcano, Montserrat. During this period, the volcano exhibited a pattern of cyclic inflation and deflation with an 8-14 h period. We find that SO2 emission rates, measured by COSPEC, correlate with the amplitude of these tilt cycles, and that higher rates of SO2 emission were associated with stronger ground deformation and enhanced hybrid seismicity. Within tilt cycles, degassing peaks coincide with maximum deformation gradients. Increases in the amount of gas in the magma conduit feeding the dome, probably due to increases in volatile content of ascending magma Volume can account for the observed increases in tilt amplitude, hybrid seismicity and SO2 emission rate. (C) 2000 Elsevier Science B.V. All rights reserved.",

keywords = "degassing-deformation correlation, cyclic activity, cospec, soufriere hills volcano, mount-st-helens, galeras-volcano, real-time, july 1995, so2, eruption, seismicity, sulfur",

author = "Watson, {I M} and C Oppenheimer and B Voight and P Francis and A Clarke and J Stix and A Miller and Pyle, {D M} and Burton, {M R} and Young, {S R} and G Norton and S Loughlin and B Darroux and Staff, {M V O}",

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Watson, IM, Oppenheimer, C, Voight, B, Francis, P, Clarke, A, Stix, J, Miller, A, Pyle, DM, Burton, MR, Young, SR, Norton, G, Loughlin, S, Darroux, B & Staff, MVO 2000, 'The relationship between degassing and ground deformation at Soufriere Hills Volcano, Montserrat', Journal of Volcanology and Geothermal Research, vol. 98, no. 1-4, pp. 117-126. https://doi.org/Doi 10.1016/S0377-0273(99)00187-0

TY - JOUR

T1 - The relationship between degassing and ground deformation at Soufriere Hills Volcano, Montserrat

AU - Watson, I M

AU - Oppenheimer, C

AU - Voight, B

AU - Francis, P

AU - Clarke, A

AU - Stix, J

AU - Miller, A

AU - Pyle, D M

AU - Burton, M R

AU - Young, S R

AU - Norton, G

AU - Loughlin, S

AU - Darroux, B

AU - Staff, M V O

N1 - 330ew Times Cited:53 Cited References Count:27

PY - 2000

Y1 - 2000

N2 - We examine the correlations between SO2 emission rate, seismicity and ground deformation in the month prior to the 25 June 1997 dome collapse of the Soufriere Hills Volcano, Montserrat. During this period, the volcano exhibited a pattern of cyclic inflation and deflation with an 8-14 h period. We find that SO2 emission rates, measured by COSPEC, correlate with the amplitude of these tilt cycles, and that higher rates of SO2 emission were associated with stronger ground deformation and enhanced hybrid seismicity. Within tilt cycles, degassing peaks coincide with maximum deformation gradients. Increases in the amount of gas in the magma conduit feeding the dome, probably due to increases in volatile content of ascending magma Volume can account for the observed increases in tilt amplitude, hybrid seismicity and SO2 emission rate. (C) 2000 Elsevier Science B.V. All rights reserved.

AB - We examine the correlations between SO2 emission rate, seismicity and ground deformation in the month prior to the 25 June 1997 dome collapse of the Soufriere Hills Volcano, Montserrat. During this period, the volcano exhibited a pattern of cyclic inflation and deflation with an 8-14 h period. We find that SO2 emission rates, measured by COSPEC, correlate with the amplitude of these tilt cycles, and that higher rates of SO2 emission were associated with stronger ground deformation and enhanced hybrid seismicity. Within tilt cycles, degassing peaks coincide with maximum deformation gradients. Increases in the amount of gas in the magma conduit feeding the dome, probably due to increases in volatile content of ascending magma Volume can account for the observed increases in tilt amplitude, hybrid seismicity and SO2 emission rate. (C) 2000 Elsevier Science B.V. All rights reserved.

KW - degassing-deformation correlation

KW - cyclic activity

KW - cospec

KW - soufriere hills volcano

KW - mount-st-helens

KW - galeras-volcano

KW - real-time

KW - july 1995

KW - so2

KW - eruption

KW - seismicity

KW - sulfur

U2 - Doi 10.1016/S0377-0273(99)00187-0

DO - Doi 10.1016/S0377-0273(99)00187-0

M3 - Article

SN - 0377-0273

VL - 98

SP - 117

EP - 126

JO - Journal of Volcanology and Geothermal Research

JF - Journal of Volcanology and Geothermal Research

IS - 1-4

ER -

The relationship between degassing and ground deformation at Soufriere Hills Volcano, Montserrat

Abstract

Keywords

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