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Authors: | Santini, S. | Title: | A note on Northern Marche seismicity: new focal mechanisms and seismological evidence | Issue Date: | 2003 | Series/Report no.: | 4/46 (2003) | URI: | http://hdl.handle.net/2122/983 | Keywords: | focal mechanisms Northern Apennines Adriatic off-shore seismological evidence |
Subject Classification: | 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous | Abstract: | A geodynamic interpretation of the Northern Marche region is diffi cult, the zone being characterized by complex structures which cannot be defi ned in the form of a simple, standard model. It is unquestionable that the geodynamic setting, whatever it is, bears a strong infl uence on the seismic hazard assessment of a region, and this is the background reason for the present note. In order to obtain a more detailed picture of seismological evidence in this zone, 11 new fault plane solutions of crustal events with 2.9 < M < 4.3 were calculated, using data recorded by the national seismic network of the Istituto Nazionale di Geofi sica e Vulcanologia in the period 1990-2000. The aim is to add local information to the previous studies by Frepoli and Amato (1997, 2000). A possible result of this new study is the division of the Northern Marche region into three areas with different focal mechanism categories: the inner area of the Apenninic belt, the Adriatic on-shore and the Adriatic off-shore. This note is intended to be a contribution to update seismological evidence in the Northern Marche region. |
Appears in Collections: | Annals of Geophysics |
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