云南强震的水位异常指标研究

为进行强震的年度预测,采取年变化率做为水位变化参量,大于或小于一定的年变化率值即为强震异常。在研究多年的强震前地下水位异常震例的基础上,在云南3个地震区分别确定了指标观测井及其强震的预测指标：丽江地震区选择丽江井,水位异常判定指标为年变化率R临≤-1.10;楚雄地震区为大姚井,指标是R临≥0.03;滇西南地震区为双江井...

INDEX RESEARCH OF WATER LEVEL ANOMALY BEFORE STRONG EARTHQUAKES IN YUNNAN AREA

In order to do better in the annual strong earthquake forecast, the authors consider that the annual changing rate higher or lower than certain value is anomaly before strong earthquakes by using the annual changing rate as changing before some strong confirmed in three parameter of water-level. Based on the analysis of many years water level anomalies earthquakes, the index of water-level wells and strong earthquake forecasting have been seismic zones of Yunnan area： in Lijiang earthquake zone, the index well is Lijiang Well and the index of water-level anomaly is the annual changing rate R临≤ - 1.10 ; in Chuxiong earthquake zone, it is Dayao Well and the index is R临≥ 30. 03 ; in southwest Yunnan, Shuangjiang Well has been chosen and the index is R临≤ - 0. 30. The subarea indexes can do certain forecasting of the earthquakes＇ space-time-magnitude, so these results should be tested and modified in the forecasting practice in the future.