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 and presence of fluid as revealed by seismic anisotropy: Case histories from seismogenic areas in the Apennines (Italy)
Issue Date: 2012
Series/Report no.: /53 (2012)
DOI: 10.4430/bgta0047
Keywords: seismic anisotropy
Earth Crust
Subject Classification04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy 
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:Article published / in press

Files in This Item:
File Description SizeFormat 
BGTA_Pastori_02-09-2011.pdfmanuscript4.03 MBAdobe PDFView/Open
bgta0047_.pdf4.86 MBAdobe PDFView/Open
Show full item record

Page view(s) 20

Last Week
Last month
checked on May 27, 2019

Download(s) 5

checked on May 27, 2019

Google ScholarTM