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Back arcs basins and P‐wave crustal velocity in the Ionian and Aegean regions
Author(s) -
Alessandrini Bruno,
Beranzoli Laura,
Drakatos George,
Falcone Claudia,
Karantonis George,
Mele Francesco M.,
Stavrakakis George
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 - 10.1029/97gl00082
Subject(s) - geology , subduction , seismology , crust , mantle (geology) , mediterranean sea , structural basin , back arc basin , tectonics , geophysics , mediterranean climate , paleontology , ecology , biology
Tomographic images of the lower crust and uppermost mantle beneath the Central Mediterranean have been obtained from arrival times of regional earthquakes. We find a low velocity belt at about 25 km beneath the Hellenic Arc. A low velocity anomaly at a depth of 40 km extends under the Aegean back arc basin. High velocities are present at Moho depth beneath the Ionian Sea close to the Calabrian and Aegean arcs and under the Aegean Sea. The results suggest a close relation between P wave crustal velocity and the subduction systems of the studied area.