Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item:

Authors: Piccinini, D.*
Piana Agostinetti, N.*
Roselli, P.*
Ibs-von Seht, M.*
Braun, T.*
Title: Analysis of small magnitude seismic sequences along the Northern Apennines (Italy)
Title of journal: Tectonophysics
Series/Report no.: 1-2/ 476(2009)
Publisher: Elsevier
Issue Date: 15-Oct-2009
DOI: 10.1016/j.tecto.2009.04.005
Keywords: Northern Apennines
Stress field
Focal mechanisms
Abstract: We analyze the seismicity of a small sector of the Northern Apennines merging data from the Italian seismic bulletin with original data collected by temporary seismic networks. Our attention is focused on the region enclosed between the Apenninic watershed and the Adriatic Sea. This portion of belt is interested by the occurrence of diffuse crustal seismicity and small-to-moderate earthquakes. In this paper we study the five small sequences with mainshock having Mw < 4.7 that in the past 15 years hit the area. Our interest is addressed to better understand the relationship between these events and the regional seismotectonic setting in terms of seismicity distribution and stress field. Two regions with different behavior in the seismic release can be distinguished: (i) along the watershed where seismicity is clustered at shallow depths (< 15 km) and where strong earthquakes occurred in the past, (ii) an eastern portion where the seismicity is distributed across all of the crustal volume, locally reaching depths down to 30 km. The focal mechanism of the seismic sequences shows mainly normal fault kinematics coherent with the regional stress field. Detailed stress field analysis suggests a rotation of the principal stress axis moving from the axial part of the chain toward the Adriatic Sea to the east.
Appears in Collections:04.07.07. Tectonics
04.06.01. Earthquake faults: properties and evolution
Papers Published / Papers in press

Files in This Item:

File Description SizeFormatVisibility
sdarticle.pdfMain Article1.98 MBAdobe PDFView/Open

This item is licensed under a Creative Commons License
Creative Commons

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Share this record




Stumble it!



Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA