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: http://hdl.handle.net/2122/6863

Authors: Atzori, S.*
Antonioli, A.*
Title: Optimal fault resolution in geodetic inversion of coseismic data
Title of journal: Geophysical Journal International
Series/Report no.: /185 (2011)
Publisher: Wiley-Blackwell
Issue Date: 2011
DOI: 10.1111/j.1365-246X.2011.04955.x
Keywords: fault modelling
geodetic data inversion
Abstract: With the continued growth in availability of DInSAR and GPS data, space based geodesy has been widely applied to image the coseismic displacement field and to retrieve the static dislocation over the fault plane for almost all the significant earthquakes of the past two decades. This is performed by linear data inversion over a set of subfaults, generally characterized by a constant and predefined or manually adjusted dimensions. In this paper we propose a new algorithm to automatically retrieve an optimized fault subdivision in the linear inversion of coseismic geodetic data. The code iteratively keeps the parameter resolution close to a predefined high value. We first discuss the rationale supporting our algorithm and, after a detailed description of its implementation, we analyze the advantages of its introduction in the data inversion. The algorithm was tested against an exhaustive range of synthetic and real datasets and fault mechanisms. Among them, we present the results for the Mw 6.2, 2009 L’Aquila (Central Italy) earthquake and compare the new and previously published slip distributions showing the disappearance of misleading slip pattern and the increased resolution for shallower zones.
Appears in Collections:04.03.07. Satellite geodesy
Papers Published / Papers in press

Files in This Item:

File Description SizeFormatVisibility
accepted_paper_GJI_12gennaio.pdfAccepted paper1.81 MBAdobe PDFView/Open
Atzori and Antonioli (Split fault) - GJI 2011.pdf1.26 MBAdobe PDFView/Open


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


Share this record
Del.icio.us

Citeulike

Connotea

Facebook

Stumble it!

reddit


 

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