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: Pastori, M.*
Valoroso, L.*
Piccinini, D.*
Wustefield, A.*
Zaccarelli, L.*
Bianco, F.*
Kendall, M.*
Di Stefano, R.*
Chiaraluce, L.*
Di Bucci, D.*
Margheriti, L.*
Barchi, M.*
Title: Crustal fracturing field and presence of fluid as revealed by seismic anisotropy: case histories from seismogenic areas in the apennines (Italy)
Title of journal: Bollettino di Geofisica Teorica ed Applicata
Series/Report no.: /53 (2012)
Issue Date: 2012
DOI: 10.4430/bgta0047
Keywords: seismic anisotropy
Earth Crust
Abstract: An automatic analysis code, Anisomat+, was developed, tested and improved to calculate anisotropic parameters: fast polarization direction and delay time. Anisomat+ was applied on data coming from three zones of the Apennines in Italy. For each area, anisotropic parameters have been interpreted to determine the fracture and stress field taking into account the geological and structural settings. It was recognized that average of fast directions are oriented NW-SE at all sites, in agreement with the orientation of maximum horizontal stress and also with the strike of the main fault structures. The mean values of normalized delay time range from 0.005 s/km to 0.007 s/km and to 0.009 s/km, respectively for L'Aquila region, Alto Tiberina Fault area and Val D'Agri basin, suggesting a 3-4% of crustal anisotropy. Moreover, for each area, the spatial distributions of anisotropic parameters are examined, for L’Aquila 2009 seismic sequence also their temporal distribution is discussed.
Appears in Collections:04.06.07. Tomography and anisotropy
Papers Published / Papers in press

Files in This Item:

File SizeFormatVisibility
BGTA_Pastori_02-09-2011.pdf4.03 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