RNGCHN: a program to calculate displacement components from dislocations in an elastic half-space with applications for modeling geodetic measurements of crustal deformation

Citation
Kl. Feigl et E. Dupre, RNGCHN: a program to calculate displacement components from dislocations in an elastic half-space with applications for modeling geodetic measurements of crustal deformation, COMPUT GEOS, 25(6), 1999, pp. 695-704
Citations number
36
Categorie Soggetti
Earth Sciences
Journal title
COMPUTERS & GEOSCIENCES
ISSN journal
00983004 → ACNP
Volume
25
Issue
6
Year of publication
1999
Pages
695 - 704
Database
ISI
SICI code
0098-3004(199907)25:6<695:RAPTCD>2.0.ZU;2-T
Abstract
The RNGCHN program calculates a single component of the displacement field due to a finite or point-source dislocation buried in an elastic half space . This formulation approximates the surface movements produced by earthquak e faulting or volcanic intrusion. As such, it is appropriate for modeling c rustal deformation measured by geodetic surveying techniques, such as spiri t leveling, trilateration, Very Long Baseline Interferometry (VLBI), Global Positioning System (GPS), or especially interferometric analysis of synthe tic aperture radar (SAR) images. Examples suggest that this model can fit s imple coseismic earthquake signatures to within their measurement uncertain ties. The program's input parameters include fault position, depth, length, width, strike, dip, and three components of slip. The output consists of d isplacement components in the form of an ASCII list or a rectangular array of binary integers. The same program also provides partial derivatives of t he displacement component with respect to all 10 input parameters. The FORT RAN source code for the program is in the public domain and available as th e compressed tar file rngchn.tar.Z in the directory/pub/GRGS via the Intern et by anonymous ftp to spike.cst. cnes.fr. This distribution includes worke d examples and a MATLAB interface. (C) 1999 Elsevier Science Ltd. All right s reserved.