The Determination of Slip Mode of Some Major Active Faults in China Through Comparative Study of Geologic and Seismic Dislocations

摘要

The comparative study of the geologic and seismic dislocations often major active faults,such as the Aikin fault etc.,on China mainland,has shown that the ratio between the seismic slip rate(Vs)and geologic slip rate(Vg),i.e.,Q=Vs/Vg,for most of the active faults ranges between 0.5-0.8,indicating that most of the active faults are characterized by stick slip movement.According to the magnitude of the Q value,the slip mode of the faults can further be classified into four types:strong stick-slip(Q≥0.75),mainly stick-slip(0.5≤Q0.75),mainly creep-slip(0.50≥0.25),and strong creep-slip(Q0.25).The authors have also analyzed the constraint of the determination of Q value,as well as the prospect of the application of Q value to the determination of slip mode of major active faults.