非对称地震矩张量反演与旋转地震波研究

引进非对称地震矩张量以表示具有有限厚度的断层的地震效应。指出非对称地震矩张量的表示式中，位错项相应于对称矩张量，而拉力项相应于非对称矩张量。利用地震观测资料反演一些地震的非对称地震矩张量，并在我国东北海城-岫岩地区开展小孔径地震台阵流动观测，探索通过地震观测检测旋转地震波的可能性。

Asymmetric moment tensor is introduced to account for the seismic effect of a fault with finite thickness. It is shown that in asymmetric seismic moment tensor, the displacement dislocation term is corresponding to a symmetric moment tensor; the traction term is corresponding to an asymmetric moment tensor. Using seismic observation data, asymmetric seismic moment tensor is inverted for some selected earthquakes. A small aperture mobile seismic array is deployed in Haicheng-Xiuyan area of northeastern China to explore possibility to detect rotational seismic wave through seismological observation.