天文时纬残差波动异常的一种可能的地球物理解释

A POSSIBLE GEOPHYSICAL EXPLANATION FOR ABNORMAL RESIDUAL FLUCTUATIONS OF ASTRONOMICAL TIME OR LATITUDE

天文界一般都从地球大气的局部运动来解释天文时纬残差波动的原因,但长期得不出确定的结论。本文从残差波动异常同台站周围强震活动的关系出发,论述了地下物质运动与构造活动也是产生天文时纬波动异常的可能原因,其中的关键是地方铅垂线的变化。作者认为,天文时纬仪器的特长是能检测铅垂线的连续变化,若经改进,它既能监测铅垂线的变化,又能对地震预测提供有益的信息。

For astronomer, the residual fluctuations of astronomical time or latitude used to be attributed to the local movement of atmosphere. However, for a long time, no definite conclusion had been obtained. In this paper, we analyse the relation between abnormal residual fluctuations of time or latitude and trong earthquakes happened near the observatories and the conclusion in that these abnormal fluctutions seem to be attributed to mass movement of underground water and tectonic movement which induce the change of the local vertical. It is expected the classical technique can contribute to both monitoring the continuous change of vertical and predicting earthquake.