Application of the negative binomial to earthquake occurrences in the Alpide-Himalayan belt |
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Authors: | N Madhava Rao K L Kaila |
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Institution: | National Geophysical Research Institue, Uppal Road, Hyderabad 500 007, India |
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Abstract: | Summary . Shallow focus earthquakes ( h ≤ 60 km) of magnitude range M = 4.0–6.0, occurred during 1954–75 in various high seismicity zones of the Alpide-Himalayan belt have been tested by the Poisson and the negative binomial laws. When the clustering of events make the simple Poisson model inapplicable in most of the high seismicity zones of the Alpide-Himalayan belt it has been shown that the negative binomial entries provide an excellent model for describing the earthquake occurrences. The chi-square ( X 2) test is employed for testing the actual observations with theoretical distributions. |
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Keywords: | Alpide-Himalayan belt chi-square test negative binomial Poisson distribution risk zones shallow focus earthquakes |
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