Coseismic Deformation Effect of the Nepal M_S8.1 Earthquake

Based on the data of cave strain, borehole strain and tilt observations on North China, the first motion direction and volatility caused by Nepal M_S8.1 earthquake are summarized, and compared with the results of other observing instruments. The results show that in North China the pressure of the first motion of EW strain observations is mainly concentrated in the vicinity of the east-west fault, while the tension of the first motion is mainly concentrated in the north-east fault nearby; the NS coseismic change is tension of the first motion. Coseismic changes of EW tilt observations in North China mainly tilt are westward, while coseismic changes of NS tilt observations mainly tilt are southward. This results show that the north of epicenter of Nepal earthquake moves southward and its strain have been released.