Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5034
Authors: | Pietrantonio, G.* Pisani, A. R.* Devoti, R.* |
Title: | An algorithm for the search of homogeneous strain-rate fields | Issue Date: | 19-Apr-2009 | Keywords: | Strain-Rate GPS Statistical Tests |
Subject Classification: | 04. Solid Earth::04.03. Geodesy::04.03.99. General or miscellaneous | Abstract: | The 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 | Size | Format | |
---|---|---|---|---|
EGU09_pietrantonio.pdf | 92.79 kB | Adobe PDF | View/Open |
Page view(s)
142
checked on Mar 27, 2024
Download(s) 50
286
checked on Mar 27, 2024