GPS用于区域地壳运动及地震危险区判定的初步研究

Study on the Horizontal Crust Movement and Emphasized Seismic Surveillance Areas of North China by Using of GPS Data

利用现有的ＧＰＳ复测资料（１９９２～１９９５），分析了华北部分区域当前地壳水平运动状态，得到了如下结果：（１）监测区在整体上表现为张性运动，主张应变方向为北西西－南东东；（２）监测区存在两个较高的最大剪应变区－北京地区和临沂附近的郯庐断裂两则；（３）存在一个北北西－南南东条带状的压性区，最大面压缩位于北京地区。（４）位移场具有明显的分区性。

In this paper, the horizontal crust movement has been studied by using of GPS data (1992～1995) in North China area and the results shown as follows: (1) The direction of tensile stress is NWW SEE; (2)There are two parts with higher value of R max in the area, i.e. Beijing region and two sides of Tancheng Lujiang fault zone around Linyi; (3) There is a NNW SSE compressive zone and the most large compressive part is in Beijing region; (4) There are classity features of the horizontal movement field.