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High resolution velocity structure beneath Mount Vesuvius from seismic array data
Author(s)
Scarpa, R.
University of Salerno
Tronca, F.
Parco Scientifico e Tecnologico, L'Aquila
Language
English
Obiettivo Specifico
3.1. Fisica dei terremoti
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
21/29 (2002)
Publisher
American Geophysical Union
Issued date
2002
Keywords
Abstract
A high resolution P-wave image of Mt. Vesuvius edifice has been derived from simultaneous inversion of travel times and hypocentral parameters of local earthquakes, land based shots and small aperture array data. The results give details down to 300 – 500 m. The relocated local seismicity appears to extend down to 5 km below the central crater, distributed in a major cluster, centered at 3 km below the central crater and in a minor group, with diffuse hypocenters inside the volcanic edifice. The two clusters are separated by an anomalously high Vp region at around 1 km depth. A zone with high Vp/Vs in the upper layers is interpreted as produced by the presence of intense fluid circulation. The highest energy quakes (up to M = 3.6) are located in the deeper cluster, in a high P-wave velocity zone. Our results favor an interpretation in terms of absence of shallow magma reservoirs.
Type
article
File(s)
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Name
Geophysical Research Letters 2002 Scarpa.pdf
Description
Main Article
Size
258.93 KB
Format
Adobe PDF
Checksum (MD5)
37af658282e1c601d8c488bfd745bfa9