Abstract:
The seismic activity in Yunnan has characteristics of high frequency,high strength,shallow seismic source and strong destructive.In order to explore magnitude-frequency relationship and b-value of the major seismic regions in Yunnan and surrounding areas,the b-values of Xianshuihe-Diandong,Southwest Yunnan,South China Coast and Central Tibet seismic regions are calculated by least square method.The magnitude-frequency relationships for each seismic region are statistically studied.Finally,the magnitude-frequency relationships and b-values of the four seismic regions are compared and analyzed.