GPS Measurement of Surface Deformation Around Soufriere Hills Volcano, Montserrat from October 1995 to July 1996

Glen S. Mattioli; Timothy H. Dixon; Frederic Farina; Ellen S. Howell; Pamela E. Jansma; Alan L. Smith

doi:10.1029/98GL00931

GPS Measurement of Surface Deformation Around Soufriere Hills Volcano, Montserrat from October 1995 to July 1996

Glen S. Mattioli, Timothy H. Dixon, Frederic Farina, Ellen S. Howell, Pamela E. Jansma, Alan L. Smith

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

Abstract

Global Positioning System geodesy was used to measure surface deformation on Soufriere Hills volcano, Montserrat from October 6, 1995 to July 1, 1997 during initial dome growth and gravitational collapse. Our data from this period show non-axially symmetric horizontal displacements, and decreasing subsidence as a function of radial distance from the former topographic high of the volcanic edifice. Forward modeling suggests that surface deformation is caused by a shallow vertical dike (< 3 km), which expanded approximately 1 m, coupled with a deflating Mogi source at about 6 km depth. These inferred source parameters are in good agreement with independent observations of regional dike widths and preemption magma storage depth.

Original language	American English
Journal	Geophysical Research Letters
Volume	25
DOIs	https://doi.org/10.1029/98GL00931
State	Published - Sep 1 1998
Externally published	Yes

Disciplines

Earth Sciences

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title = "GPS Measurement of Surface Deformation Around Soufriere Hills Volcano, Montserrat from October 1995 to July 1996",

abstract = " Global Positioning System geodesy was used to measure surface deformation on Soufriere Hills volcano, Montserrat from October 6, 1995 to July 1, 1997 during initial dome growth and gravitational collapse. Our data from this period show non-axially symmetric horizontal displacements, and decreasing subsidence as a function of radial distance from the former topographic high of the volcanic edifice. Forward modeling suggests that surface deformation is caused by a shallow vertical dike (< 3 km), which expanded approximately 1 m, coupled with a deflating Mogi source at about 6 km depth. These inferred source parameters are in good agreement with independent observations of regional dike widths and preemption magma storage depth.",

author = "Mattioli, {Glen S.} and Dixon, {Timothy H.} and Frederic Farina and Howell, {Ellen S.} and Jansma, {Pamela E.} and Smith, {Alan L.}",

year = "1998",

month = sep,

day = "1",

doi = "10.1029/98GL00931",

language = "American English",

volume = "25",

journal = "Geophysical Research Letters",

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TY - JOUR

T1 - GPS Measurement of Surface Deformation Around Soufriere Hills Volcano, Montserrat from October 1995 to July 1996

AU - Mattioli, Glen S.

AU - Dixon, Timothy H.

AU - Farina, Frederic

AU - Howell, Ellen S.

AU - Jansma, Pamela E.

AU - Smith, Alan L.

PY - 1998/9/1

Y1 - 1998/9/1

N2 - Global Positioning System geodesy was used to measure surface deformation on Soufriere Hills volcano, Montserrat from October 6, 1995 to July 1, 1997 during initial dome growth and gravitational collapse. Our data from this period show non-axially symmetric horizontal displacements, and decreasing subsidence as a function of radial distance from the former topographic high of the volcanic edifice. Forward modeling suggests that surface deformation is caused by a shallow vertical dike (< 3 km), which expanded approximately 1 m, coupled with a deflating Mogi source at about 6 km depth. These inferred source parameters are in good agreement with independent observations of regional dike widths and preemption magma storage depth.

AB - Global Positioning System geodesy was used to measure surface deformation on Soufriere Hills volcano, Montserrat from October 6, 1995 to July 1, 1997 during initial dome growth and gravitational collapse. Our data from this period show non-axially symmetric horizontal displacements, and decreasing subsidence as a function of radial distance from the former topographic high of the volcanic edifice. Forward modeling suggests that surface deformation is caused by a shallow vertical dike (< 3 km), which expanded approximately 1 m, coupled with a deflating Mogi source at about 6 km depth. These inferred source parameters are in good agreement with independent observations of regional dike widths and preemption magma storage depth.

UR - https://digitalcommons.usf.edu/geo_facpub/486

U2 - 10.1029/98GL00931

DO - 10.1029/98GL00931

M3 - Article

VL - 25

JO - Geophysical Research Letters

JF - Geophysical Research Letters

ER -

GPS Measurement of Surface Deformation Around Soufriere Hills Volcano, Montserrat from October 1995 to July 1996

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