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A 550 km long moho traverse in the Tyrrhenian Sea from O.B.S. recorded P N waves
Author(s) -
Steinmetz L.,
Ferrucci F.,
Hirn A.,
Morelli C.,
Nicolich R.
Publication year - 1983
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/gl010i006p00428
Subject(s) - geology , seismology , traverse , upper crust , crust , geodesy , tectonics , geophysics
Six OBS deployed on a 550 km line in the Tyrrhenian sea furnish reversed and overlapping profiles from 43 shots at 12 km intervals. Head waves recorded from a 8 km/s refractor, the Moho, permitted the computation of the crustal thickness, which shows this basin to be underlain by an oceanic type of crust, at least in two 100 km wide regions. Variations of Pn arrival times mirror strong topographical changes of the Moho. Differences in dips at the extremities towards Corsica and Calabria are documented.