Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cg.....31.1249a&link_type=abstract
Computers and Geosciences, Volume 31, Issue 10, p. 1249-1259.
Astronomy and Astrophysics
Astronomy
1
Scientific paper
This paper presents a GIS approach to spatial analysis of fault populations. Coherence between fault moment tensors, a concept borrowed from the geophysical works of Kagan and Knopoff [1985a. Geophysical Journal of the Royal Astronomical Society 81(2), 429 444; 1985b. Geophysical Journal of the Royal Astronomical Society 83(3), 637 656], is the parameter used for quantifying the degree of similarity between faults. Fault datasets from various structural sites can be imported into a GIS software such as ArcView®; using a series of customized GIS tools, data can then be checked and their spatial dependence may be investigated. This customization may be used to investigate the distribution of coherence values based on fault types (i.e. normal, left-lateral, etc.) and/or on the distance between faults. The analysis of a natural dataset reveals that, depending on the movement type, faults can display different coherence distributions with increasing distance ranges, and in some cases also a cyclic behavior. These findings can help reconstruct the history and understand the kinematic significance of fault populations.
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