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本文经过对1975年海城地震前大量的、约200处观测资料的地下水变化异常的发生时间与地点之间的关系的分析,发现1975年1月31日以前发生的地下水变化异常点是随着时间从外围(东西)以一定的速度向震中方向迁移的,日后到海城地震前,地下水异常点则又从震中向外围扩展。 将震前大量的地下水异常点观测资料的时间与地点这两个量进行回归分析,得知1975年1月31日以前的地下水异常点的逐渐向震中方向迁移是线性的。 笔者认为,震前地下水异常点具有上述规律性的时空分布过程,反应了震前地壳所受的力是由外围(东西)逐渐向震中方向传递及回返的。
Based on the analysis of the relationship between the occurrence time and location of the groundwater anomaly in 1975 before the Haicheng earthquake with a large amount of about 200 observations, we find that the anomalous groundwater change occurred before January 31, 1975 is as follows Time moves from the periphery (something) to the direction of the epicenter at a certain speed. Before the earthquake in Haicheng, the anomalous point of the groundwater will expand from the epicenter to the periphery. Regression analysis of the time and place of a large number of groundwater anomaly observation data before the earthquake shows that the migration of groundwater anomaly points before January 31, 1975, to the epicentral direction is linear. The author believes that the groundwater anomalies before the earthquake with the regularity of space-time distribution process, reflecting the force suffered by the crust before the earthquake from the periphery (things) to the epicenter direction of the transfer and return.