Estimation of the occurrence probability of large earthquakes on the active fault without the historical records of strong earthquakes based on renewal model
Guo Xing
Pan Hua
Abstract：Using the renewal model to compute the conditional probability that an earthquake occurs in the next few decades,the time that it has not occurred in the last T years is needed.However,due to lack of records of historical large earthquakes for many faults,the Poisson model may underestimate the possibil-ity of the occurrence of major earthquakes.As for the active faults where the historical strong earthquake records are absent,this paper proposed a new method for calculating the conditional probability by using the length of recor-ded quiet time as a parameter (T s ).And then the Tazang fault segment was taken for a case study based on the new method.The result shows that the oc-currence probability of large earthquakes is about 0.064 9 in the next 50 years along the Tazang fault segment.
Keywords：renewal modelstrong earthquakeconditional probability
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 1054-1061 )