Physics – Geophysics
Scientific paper
Mar 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24..515d&link_type=abstract
Geophysical Research Letters, Volume 24, Issue 5, p. 515-518
Physics
Geophysics
5
Exploration Geophysics: Seismic Methods, Seismology: Continental Crust
Scientific paper
In this paper we have applied a τ-p inversion method based on a non linear approach to a set of first P-arrival times from a 2-D active seismic experiment performed at Mt. Vesuvius in 1994. The initial seismic investigation is devoted to the study of the shallow structure and the τ-p method has been used for modelling velocity variations of a spherically concentric medium which is a better approximation than a flat layer of the Vesuvius geometry. We are able to obtain detailed 1-D velocity models along different specified sections of the recorded seismic line. These sections span different depth ranges and indicate strong lateral and vertical P-velocity variations in the first 1 km of the volcano structure with values ranging from about 1.5 km/s at the surface to 3.5-4.0 km/s at depth. The average 1-D concentric model obtained in this study can be used as a reasonable starting model for iterative high-resolution tomographies of Vesuvius velocity structures.
de Matteis Raffaella
Virieux Jean
Zollo Aldo
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