STRESSTAT: A Basic program for numerical evaluation of stress inversion results

Lisle, Richard John and Orife, Tobore 2002. STRESSTAT: A Basic program for numerical evaluation of stress inversion results. Computers & Geosciences 28 (9) , pp. 1037-1040. 10.1016/S0098-3004(02)00018-3

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Abstract

STRESSTAT allows the statistical treatment of palaeostress results and stress determinations based on the inversion of earthquake focal mechanism data. Results of this kind are firstly expressed as normalised stress tensors by assigning nominal values to two missing components of the tensor. Our normalisation scheme assigns a mean stress of zero and an octahedral shear stress equal to one. The tensors so obtained can be averaged by calculation of the mean tensor, involving the summation of corresponding tensor components. The dispersion of stress results is expressed by the octahedral shear stress of the mean tensor. In a similar fashion, a measure of the difference between tensors is derived by subtraction of one normalized tensor from another. STRESSTAT is written in two versions for the PC (QuickBasic and Visual Basic).

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Earth and Environmental Sciences
Subjects:	Q Science > QE Geology
Uncontrolled Keywords:	Tectonic stress; Fault-slip methods; Focal mechanisms; Statistics; Mean tensor
Publisher:	Elsevier
ISSN:	0098-3004
Last Modified:	04 Jun 2017 02:10
URI:	https://orca.cardiff.ac.uk/id/eprint/10413

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