Characteristics of Large Earthquake Recurrence and Determination of Average Recurrence Interval Value |
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| Authors: | Ran Yongkang and Deng Qidong |
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| Institution: | Ran Yongkang and Deng QidongInstitute of Geology,China Seismological Bureau,Beijing 100029,China |
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| Abstract: | Paleoearthquakes in the Yanqing-Huailai basin and on the Haiyuan fault are studied in detail. The result indicates that the recurrence behavior of large earthquakes is of a wide variety. Characteristic earthquakes show the behavior characteristics of the activity of most faults, but they are of different grades, the recurrence interval of large earthquakes is of staged nature, and the interaction between faults has effects on the recurrence sequence of large earthquakes. Thus, when the recurrence behavior of large earthquakes is staged in time or when the gradation of characteristic earthquakes has led to a sharp difference in recurrence interval between paleoearthquakes of different intensities, for estimating the large earthquake risk by the deterministic method and time-dependent probabilistic method, it is necessary to calculate the recurrence interval value separately for each specific stage or grade in order that the average recurrence interval values of different stages can be determined. |
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| Keywords: | Paleoearthquake Earthquake recurrence Prediction of earthquake risk Recurrence interval |
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