FSA: Fault & Stress Analysis software

Ongoing development           Current stable version: 36.5


To analyse

Status and documentation


Internal Representation

Input and Output Files

Input can be either fault or stress data. Output can also be either fault or stress data. That means one can invert stress from fault data (input = fault, output = stress), generate fault compatible with a stress state (input = stress, output = fault), or analyse the relationship between fault and stress (input = stress AND fault).

The various types and formats of input fault and stress data files are detailed in the user's manual.

Note that conversion between formats can be achieved by reading data from an input file in one format and writing them into an output file in a different format.


Actions affecting fault data only

Actions affecting stress tensors data only

Actions affecting stress tensors and using fault data

Input = fault and slip data   Output = new stress tensor data

Actions using stress tensors and fault data: analysis of the relationship

Input = fault and slip data and stress tensor data
A first step computes for each tensor the fault plane error, E(i), for each fault slip data #i. A second step computes the global error, F (noted Ftm in the program ouputs), for each tensor and ALL the fault data. Note: E(i) and F are controlled by the Inversion parameters. Then different graphical representations are available with extra computations


How to refer to this program

If you publish results obtained with this program, it would be appreciated if you referred to:
  1. the random search method:
  2. descriptions of the methods implemented in Fsa with examples of application:
  3. the software version and its location:
Additional references depending on the subject discussed:



System dependent: 3 files

(68k - PPC)

(PPC - i86)


General information to download and read first MacOS classic versions MacOS X versions MS-Windows versions SunOS versions
Screen graphic application The Quickdraw (-qd-) application The Quartz (-qtz-) application No screen application yet The GKS (-gks-) application
File graphic application The PostScript (-ps-) application The PostScript (-ps-) application The PostScript (-ps-) application The PostScript (-ps-) application

Revision history

Program versions

The versions of the program are detailed in the revision history chapter of the manual.

Revisions of this file

02-02-2000 04-02-2000 17-02-2000 04-09-2000 11-09-2000 06-06-2001 20-08-2001 28-03-2003 30-07-2003 11-09-2003
21-07-2005 01-09-2005 06-09-2005 12-09-2005 19-09-2005 05-01-2006 20-02-2006 20-04-2007 2007-11-21 2008-02-01
2008-04-09 2009-01-16 2009-07-28 2010-04-26 2010-05-28 2011-07-25 2011-07-29 2012-05-10 2013-04-09 2013-06-18

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