Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009

L. Chardot; B. Voight; R. Foroozan; S. Sacks; A. Linde; R. Stewart; D. Hidayat; A. Clarke; D. Elsworth; N. Fournier; J.-C. Komorowski; G. Mattioli; C. Widiwijayanti; RSJ Sparks

doi:10.1029/2010GL044661

Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009

L. Chardot, B. Voight, R. Foroozan, S. Sacks, A. Linde, R. Stewart, D. Hidayat, A. Clarke, D. Elsworth, N. Fournier, J.-C. Komorowski, G. Mattioli, C. Widiwijayanti, RSJ Sparks

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Abstract

Vulcanian explosions with plumes to 12 km occurred at Soufriere Hills volcano (SHV) between July 2008 and January 2009. We report strainmeter and barometric data, featuring quasi-linear strain changes that correlate with explosive evacuation of the conduit at rates of similar to 0.9-2 x 10(7) kg s(-1). July and January explosion-generated strains were similar, similar to 20 nanostrain at similar to 5 km, and interpreted as contractions of a quasi-cylindrical conduit, with release of magmastatic pressure, and exsolution-generated overpressure of order 10 MPa. The 3 December 2008 event was distinctive with larger signals (similar to 140-200 nanostrain at 5-6 km) indicating that a rapid pressurization preceded and triggered the explosion. Modeling suggests a dike with ENE trend, implying that feeder dikes at SHV had diverse attitudes at different times during the eruption. All explosions were associated with acoustic pulses and remarkable atmospheric gravity waves. Citation: Chardot, L., et al. (2010), Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009, Geophys. Res. Lett., 37, L00E24,

Translated title of the contribution	Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009
Original language	English
Number of pages	6
Journal	Geophysical Research Letters
Volume	37
DOIs	https://doi.org/10.1029/2010GL044661
Publication status	Published - Sept 2010

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Chardot, L., Voight, B., Foroozan, R., Sacks, S., Linde, A., Stewart, R., Hidayat, D., Clarke, A., Elsworth, D., Fournier, N., Komorowski, J.-C., Mattioli, G., Widiwijayanti, C., & Sparks, RSJ. (2010). Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009. Geophysical Research Letters, 37. https://doi.org/10.1029/2010GL044661

@article{270e02845aa243c48bc9f40ec5fbb292,

title = "Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009",

abstract = "Vulcanian explosions with plumes to 12 km occurred at Soufriere Hills volcano (SHV) between July 2008 and January 2009. We report strainmeter and barometric data, featuring quasi-linear strain changes that correlate with explosive evacuation of the conduit at rates of similar to 0.9-2 x 10(7) kg s(-1). July and January explosion-generated strains were similar, similar to 20 nanostrain at similar to 5 km, and interpreted as contractions of a quasi-cylindrical conduit, with release of magmastatic pressure, and exsolution-generated overpressure of order 10 MPa. The 3 December 2008 event was distinctive with larger signals (similar to 140-200 nanostrain at 5-6 km) indicating that a rapid pressurization preceded and triggered the explosion. Modeling suggests a dike with ENE trend, implying that feeder dikes at SHV had diverse attitudes at different times during the eruption. All explosions were associated with acoustic pulses and remarkable atmospheric gravity waves. Citation: Chardot, L., et al. (2010), Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009, Geophys. Res. Lett., 37, L00E24,",

author = "L. Chardot and B. Voight and R. Foroozan and S. Sacks and A. Linde and R. Stewart and D. Hidayat and A. Clarke and D. Elsworth and N. Fournier and J.-C. Komorowski and G. Mattioli and C. Widiwijayanti and RSJ Sparks",

year = "2010",

month = sep,

doi = "10.1029/2010GL044661",

language = "English",

volume = "37",

journal = "Geophysical Research Letters",

issn = "1944-8007",

publisher = "American Geophysical Union",

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Chardot, L, Voight, B, Foroozan, R, Sacks, S, Linde, A, Stewart, R, Hidayat, D, Clarke, A, Elsworth, D, Fournier, N, Komorowski, J-C, Mattioli, G, Widiwijayanti, C & Sparks, RSJ 2010, 'Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009', Geophysical Research Letters, vol. 37. https://doi.org/10.1029/2010GL044661

TY - JOUR

T1 - Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009

AU - Chardot, L.

AU - Voight, B.

AU - Foroozan, R.

AU - Sacks, S.

AU - Linde, A.

AU - Stewart, R.

AU - Hidayat, D.

AU - Clarke, A.

AU - Elsworth, D.

AU - Fournier, N.

AU - Komorowski, J.-C.

AU - Mattioli, G.

AU - Widiwijayanti, C.

AU - Sparks, RSJ

PY - 2010/9

Y1 - 2010/9

N2 - Vulcanian explosions with plumes to 12 km occurred at Soufriere Hills volcano (SHV) between July 2008 and January 2009. We report strainmeter and barometric data, featuring quasi-linear strain changes that correlate with explosive evacuation of the conduit at rates of similar to 0.9-2 x 10(7) kg s(-1). July and January explosion-generated strains were similar, similar to 20 nanostrain at similar to 5 km, and interpreted as contractions of a quasi-cylindrical conduit, with release of magmastatic pressure, and exsolution-generated overpressure of order 10 MPa. The 3 December 2008 event was distinctive with larger signals (similar to 140-200 nanostrain at 5-6 km) indicating that a rapid pressurization preceded and triggered the explosion. Modeling suggests a dike with ENE trend, implying that feeder dikes at SHV had diverse attitudes at different times during the eruption. All explosions were associated with acoustic pulses and remarkable atmospheric gravity waves. Citation: Chardot, L., et al. (2010), Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009, Geophys. Res. Lett., 37, L00E24,

AB - Vulcanian explosions with plumes to 12 km occurred at Soufriere Hills volcano (SHV) between July 2008 and January 2009. We report strainmeter and barometric data, featuring quasi-linear strain changes that correlate with explosive evacuation of the conduit at rates of similar to 0.9-2 x 10(7) kg s(-1). July and January explosion-generated strains were similar, similar to 20 nanostrain at similar to 5 km, and interpreted as contractions of a quasi-cylindrical conduit, with release of magmastatic pressure, and exsolution-generated overpressure of order 10 MPa. The 3 December 2008 event was distinctive with larger signals (similar to 140-200 nanostrain at 5-6 km) indicating that a rapid pressurization preceded and triggered the explosion. Modeling suggests a dike with ENE trend, implying that feeder dikes at SHV had diverse attitudes at different times during the eruption. All explosions were associated with acoustic pulses and remarkable atmospheric gravity waves. Citation: Chardot, L., et al. (2010), Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009, Geophys. Res. Lett., 37, L00E24,

U2 - 10.1029/2010GL044661

DO - 10.1029/2010GL044661

M3 - Article (Academic Journal)

SN - 1944-8007

VL - 37

JO - Geophysical Research Letters

JF - Geophysical Research Letters

ER -

Explosion dynamics from strainmeter and microbarometer observations, Soufriere Hills Volcano, Montserrat: 2008-2009

Abstract

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