Earthquake Activities along the Ranong-Klong Marui Fault Zone, Southern Thailand: Implication from the Seismicity Data
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Abstract
In this study, the earthquake activities along the Ranong-Klong Marui Fault Zone (RKFZ) are investigated using the power law of earthquake frequency-magnitude distribution (FMD). The possible maximum magnitudes, recurrence periods, including the probabilities of earthquake occurrences are determined according to the constant a- and b-values obtained from the FMD. The results reveal that the RKFZ has a potential to generate the earthquake with 6.3 and 6.9 Mw in the next 50 and 100 years. Meanwhile, the Mw-7.4 earthquake proposed previously as the maximum credible earthquake has the return period around 230 year. Moreover, for the probabilities of the Mw-7.4 occurrences in the next 10, 25, 50, and 100 years, this study concludes that there are around 4, 10, 20, and 36%, respectively.
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Copyright © 2008 Department of Geology, Faculty of Science, Chulalongkorn University. Parts of an article can be photocopied or reproduced without prior written permission from the author(s), but due acknowledgments should be stated or cited accordingly.
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