Computer Science – Numerical Analysis
Scientific paper
Dec 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988e%26psl..91..223h&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 91, no. 1-2, Dec. 1988, p. 223-230.
Computer Science
Numerical Analysis
31
Earthquakes, Fractals, Geological Faults, Statistical Analysis, Stress Distribution, Numerical Analysis, Topography
Scientific paper
A two-dimensional planar fault zone on which the difference between stress and strength follows a fractal distribution is simulated to study the variation of the frequency-magnitude b-value under different distributions of heterogeneities and ambient stress levels. It is suggested that earthquakes occur in regions where this difference exceeds a specified value and that the size of these regions is a measure of the magnitude of the associated earthquake. A systematic variation in b-value is observed. It is found that the b-value has a positive correlation with the fractal dimension of the distribution and is inversely related to the ambient stress level. Observational data are compared with the simulation, showing that the observed b-value variation before and during earthquake sequences is a result of changes in both the ambient stress level and in the fractal dimension of the stress-strength distribution.
Huang Jianwei
Turcotte Donald L.
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