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我国地壳形变是通过各种垂直形变图及水平形变图的编制,了解和研究地壳最新构造运动的活动方式和强度。与新构造时期相比,它的活动方式有正向运动、振荡运动和反向运动。不同地区活动强度有明显差异,而且水平运动均大于垂直运动。地震时的地形变基本上为继承性活动。地形变是研究地震活动的重要手段之一。地震多发生在形变速率大、差异活动明显、不同方向形变带交汇区的附近地带。在地震的蕴育、发生过程中,地形变明显地出现阶段性。在地形变测量中,排除干扰提取真正的形变信息,是当前急需深入研究的课题。
Crustal deformation in China is through the preparation of various vertical deformation maps and horizontal deformation maps, to understand and study the crustal movement of the latest tectonic activity and intensity. Compared with the new tectonic period, its activity has a positive movement, oscillation and reverse movement. There are significant differences in activity intensity in different regions, and the horizontal movement is greater than the vertical movement. The terrain change during the earthquake is basically inherited activity. Terrain deformation is one of the important means to study seismic activity. The earthquakes mostly occurred in the vicinity of the zone where the deformation rate is large, the difference is obvious, and the deformation zones in different directions intersect. In the process of earthquake containment and occurrence, the terrain change obviously appears in stages. In the deformation measurement of the terrain, eliminating the interference to extract the true deformation information is the urgent need of in-depth study.