青藏块体北缘跨断层测量资料宏观分析

Macro-analysis on Across-fault Crustal Deformation Measurement Data Along the North Edge of Qinghai-Xizang Block

本文在系统整理青藏块体北缘跨断层测量资料的基础上，进行了形变类型的划分，探讨了不同类型形变所反映的断层运动性质。据此，论述了研究区主要构造带近期构造运动状况及地震活动性。作者指出，跨断层测量既可以反映附近断裂运动的态势，又可反映区域应力场的变化；它既可作为提取局部孕震信息的手段，在短临预报中发挥作用，还可根据其反映的断裂宏观变化特征，进行中、强地震较大尺度的空间－时间预测。

Based on the arrangement about the across-fault crustal deformation measurement data along north edge of Qinghai-Xizang block, we divide the reliable deformation data into different kinds, and probe into varies fault motion nature of them. The recent situation of tectonic movement of main structural belt and seismicity in this area are exponded. From above all, it is concluded that across-fault measurement can reflect not only the condition of fault movement nearby, but also the change of region stress field; not only is a method to obtain regional seismogenic message and conduct short range prediction, but also carry on larger scale space time prediction of moderately strong earthquake on the basis of the macro-change characteristic of fracture.