利用GPS资料浅析华北地区块体运动及与地震活动的关系

A Brief Analysis of Relation between Block Motion and Seismicity in the North China with GPS Information

为了研究华北地区近年地壳水平运动的状态与演化,利用10a来华北地区网络工程、山西断裂带GPS观测成果,结合该区地质构造背景,分析了华北地区各块体运动的方向、速率变化及其与区内所发生地震的关系,初步得出以下结论:在区域应力场相对稳定时,表现为区域内GPS观测点整体趋势性运动不明显;而在区域应力场相对变化时,表现为影响区域内GPS观测点出现明显的整体趋势性运动。

In order to study horizontal movement and evolvement of the crust in the North China in recent years, an analysis of the relation between the direction velocity variety of the block movement and the earthquakes accrued in the North China is made ,by using of network in the North China and GPS result of shanxi down-fault belt, combining with the geological structure of the region. The conclusion is that the holistic movement of GPS observation points is not obviously during the region stress field is relatively steady , contrarily , the holistic movement is obvious during the relatively large variety of the region's stress field.