Title

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

Document Type

Article

Publication Date

1998

Digital Object Identifier (DOI)

http://dx.doi.org/10.1029/98GL00931

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.

Comments

et al.

Was this content written or created while at USF?

No

Citation / Publisher Attribution

Geophysical Research Letters, v. 25, issue 18, p. 3417-3420

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