The characteristic earthquake model is set up by using paleoseismic and historical earthquake data of the West China.The seismic hazard of Xianshuihe-Xiaojiang fault zone located on eastern margin of Qinghai-Tibet Plateau was estimated based on the mixed seismic model composed by characteristic earthquake model and magnitude-apart Poisson model.Having com pared with the seismic zonation map of China published in 1990,it is shown that both seismogenic probability and area of the region with I=8 obtained from the mixed model are larger than those on the seismic zonation map.That is to say,the leaving time and recurrence period influence on seismic hazard assessment.Therefore,the no nrecalibility of Poissin model could be solved by using characteristic earthquake and the mixed model,and scientific and reasonable results could be obtained.
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董瑞树,冉洪流,任国强.混合地震模型的建立及其科学意义[J].地震工程学报,2000,22(4):390-396. DONG Rui-shu, RAN Hong-liu, REN Guo-qiang. ESTABLISHMENT OF THE MIXED SEISMIC MODEL AND ITS SCIENTIFIC SIGNIFICANCE[J]. China Earthquake Engineering Journal,2000,22(4):390-396.