研究反应测区重力场变化的两种方式：重力段差的时序变化图及测区重力场的平面变化图。结果表明，地震的孕育和发生伴随着重力场的变化。

There are are two ways to study the Changes in the gravitational field of the survey area: gravity difference in changes in the timing diagram and plane change in the gravitational field of the survey area. The results show that the gestation and the occurrence of earthquakes accompanied by a focus on changes in the force field