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.
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.
Keywords
focal mechanisms;Northern Apennines;Adriatic off-shore;seismological evidence
Full Text - Views: 680
PDFIdentifiers
- DOI: 10.4401/ag-4374
This work is licensed under a Creative Commons Attribution 3.0 License.
ISSN: 2037-416X