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Shallow structure of Mt. Vesuvius Volcano, Italy, from seismic array analysis
Author(s) -
De Luca G.,
Scarpa R.,
Del Pezzo E.,
Simini M.
Publication year - 1997
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/97gl00169
Subject(s) - geology , impact crater , seismology , geophone , volcano , seismic array , microtremor , basement , civil engineering , astronomy , engineering , physics
Data from a portable dense seismic array deployed on Mt. Vesuvius in May 1994, during a 2D seismic tomography experiment, are analyzed in the present paper. The array consisted of two groups of short period geophones, 4.5 hz natural frequency, formed by 16 and 25 vertical components (plus two horizontal components), distributed along an arc like shape along the summit crater. Stacks of later arrivals, interpreted as reflected phases, provide a significant constraint to a boundary layer located in the depth range 1.5–2.2 km beneath the summit crater with average velocity V =1.8–2.2 km/s, interpreted as the top of the limestone basement. The correlation methods applied on microtremor records allowed to infer the shallow velocity structure, up to 400 m, beneath the crater rim.