滇西实验场地区断层气体的周期性变化

THE PERIODIC VARIATION OF FAULT PRODUCT GAS IN EARTHQUAKE PREDICTION STUDY AREA OF WEST YUNNAN

对滇西地震预报实验场多年来观测的Ａｒ、Ｎ２、ＣＯ２等断层气体及水氡数据进行了分析，发现与朔望月密切相关的１３．４—１５天及２７．７—３０天周期。它是断层气体的潮汐响应，可称之为“断层气体潮”。这为研究地震异常提供了一项新的对比标准。

Fault product gases, such as Ar, N 2 and CO 2, and radon, measured for many years in Earthquake Prediction Study Area of West Yunnan, have been analyzed in this paper. It is discovered that there exist periods of 13.4-15 days and 27.6-30.0 days closely related to syzygy, which are considered as the tide response of fault product gas, called Fault Product Gas Tide, that provides a new standard of comparison to study earthquake anomalies.