Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/4633
AuthorsGasperini, P. 
Vannucci, G. 
TitleFPS pack: a Package of Simple Fortran Subroutines to Manage Earthquake Focal Mechanism Data
Issue Date2003
Series/Report no.29 (7)
URIhttp://hdl.handle.net/2122/4633
KeywordsFault plane solutions
FORTRAN 77
Centroid moment tensor
Deformation axes
Nodal planes
Subject Classification05. General::05.01. Computational geophysics::05.01.01. Data processing 
AbstractEarthquakes fault plane solutions (FPSs) are routinely computed on the basis of various techniques and are reported in the literature with a wide range of formats and conventions. Although the equations relating the various parameters are well known and relatively simple, their practical application often arise to numerical singularities and indeterminations that sometimes are not well known by the authors and thus may result in wrongor inaccurate reportingof parameters. Such inaccuracies and mistakes affect about 40% of the published data we have examined to test our programs. Moreover the current use, in the seismological community, of at least two different coordinate systems to represent the Cartesian components of vectorial and tensorial quantities is a further cause of confusion. In order to simplify the management of such data, we have prepared a structured package of FORTRAN 77 subroutines performingalmost all of the possible computations and conversions amongdifferent parameters and coordinate systems. The package has been extensively tested with the data of a revised database of FPS of Italy and surrounding regions (presented in a companion paper) as well as of CMT solutions included in the Harvard catalog. r 2003 Elsevier Ltd. All rights reserved.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
fpspack_C&G_2003.pdf236.17 kBAdobe PDFView/Open
Show full item record

Page view(s)

105
Last Week
0
Last month
3
checked on Jul 23, 2017

Download(s)

239
checked on Jul 23, 2017

Google ScholarTM

Check