【摘要】 对四川及邻区五十年代至八十年代的精密水准复测资料进行处理，绘制了四川及邻区的地壳重直形变速率图、垂直形变速率梯度图和垂直形变速率梯度矢量分布图。结合研究区内构造特征，对上述图件进行分析。指出数处呈四象限分布的图像，结合地震活动进行解释，确定了研究区未来的地震危险区。更多还原

【Abstract】 Based on the calculations of the precise leveling data taken from 1950 to 1980 in bothsichuan and adjacent regions, the velocity map, the gradient contour and distribution map ofgradient vector are drawed. According to both characteristics of seismotectonic zone andthese maps, we predict possible areas where an earthquake will occurs.更多还原