Effects of the Nepal MS8. 1 Earthquake in 2015 on Seismic Activity in the Qinghai-Tibetan Plateau

作者：CHENG Guoliang,ZHANG Yuansheng,WEI Congxin

摘要：We obtained the displacement and deformation caused by the 2015 Nepal MS8. 1 earthquake adopting the finite element method,and analyzed the displacement and deformation characteristics and effect of three large earthquakes on seismic activity in the Qinghai-Tibetan block. Our primary results suggest southward movement of the QinghaiTibetan block is caused by a large earthquake occurring on thrust fault in the Himalayan zone,the displacement direction is reverse to the background displacement. The occurrence of these large earthquakes will result in stress unloading and earthquake activity will be weakened in stress unloading areas. Through the simulation results,we can detect the distribution area of stress loading and unloading caused by large earthquakes.Simultaneously,it provides a fundamental evidence for determination of earthquake activity trend.

發文機構：Lanzhou Institute of Seismology

關鍵詞：NepalMS8.1EARTHQUAKEStressloadingandUNLOADINGEARTHQUAKEQUIESCENCESEISMOGENICregionforecast

分類號： P31[天文地球—固體地球物理學][天文地球—地球物理學]