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Heterogeneity and the earthquake magnitude-frequency distribution

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Steacy, SJ and McCloskey, J (1999) Heterogeneity and the earthquake magnitude-frequency distribution. GEOPHYSICAL RESEARCH LETTERS, 26 (7). pp. 899-902. [Journal article]

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Abstract

Regional earthquake populations :Ire widely observed to have power-law magnitude-frequency statistics, Whether earthquake distributions oil individual faults are similarly power-law is presently the subject of considerable research effort. Recent careful observations suggest that event statistics on rough faults are power-law whereas earthquake distributions on smooth faults are better described by a characteristic model in which there are more large earthquakes than would be expected by extrapolation from the distribution of small events. Here the relation between heterogeneity and the magnitude-frequency distribution is investigated in a cellular automaton that includes new nearest-neighbor stress transfer rules which produce realistic stress concentrations. The results agree with the suggestion that smooth faults have more characteristic earthquake distributions and support the view that an earthquake's size is controlled by rupture arrest.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Research Institutes and Groups:Environmental Sciences Research Institute
Environmental Sciences Research Institute > Geophysics
ID Code:145
Deposited By:Professor Sandy Steacy
Deposited On:05 Nov 2009 13:47
Last Modified:22 Jun 2011 15:25

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