Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/5034
AuthorsPietrantonio, G.* 
Pisani, A. R.* 
Devoti, R.* 
TitleAn algorithm for the search of homogeneous strain-rate fields
Issue Date19-Apr-2009
URIhttp://hdl.handle.net/2122/5034
KeywordsStrain-Rate
GPS
Statistical Tests
Subject Classification04. Solid Earth::04.03. Geodesy::04.03.99. General or miscellaneous 
AbstractThe aim of this paper is to describe the theoretical fundamentals and the main features of a software suitably implemented to estimate the strain-rate tensor from continuous GPS data. Current softwares developed for geophysical applications generally estimate or compute bi-dimensional strain, since this is the most requested use. On the contrary, this software allows for a three-dimensional estimate of the strain-rate tensor. It accounts for all the significant GPS velocities and estimates the strain-rate components by the least squares method starting from the hypothesis of one homogeneous strain-rate field. An initial field has to be defined by at least 4 sites which pass the chi-squared test on the strain-rate homogeneity. The developed algorithm automatically searches for sites belonging to this initial homogeneous field, starting from the site nearest to the barycentre of the first 4 sites and proceeding until a user-defined limit distance. Each time a site is added, the homogeneity of the whole field is suitably tested by a number of statistic tests. In this work the algorithm has been also applied to some areas of geophysical interest.
Appears in Collections:Conference materials

Files in This Item:
File Description SizeFormat 
EGU09_pietrantonio.pdf92.79 kBAdobe PDFView/Open
Show full item record

Page view(s)

66
checked on Apr 28, 2017

Download(s)

184
checked on Apr 28, 2017

Google ScholarTM

Check