In order to study the prediction efficiency of the water level in the observational wells,and to explore the rela-tionship between the water-level anomaly and the earthquake,we process the observed water-level data of Deyang Well,Jianchuan Well,Zuoshu Well and Menyuan Well by the difference method and the tidal load-unloading rati-o method.Then,using the Molchan chart,we test the prediction efficiency of the 4 monitoring wells for the predic-tion of the occurrence-time,and the magnitude of the earthquakes in different blocks.The results show that the wa-ter level in the 4 monitoring Wells are efficient for the prediction of earthquakes which may occur within 180 days,and effect for the prediction of the moderate-and strong-earthquakes within a certain range.The prediction efficien-cy is affected by the distribution of tectonic structures;in the structure-developed areas,the water-level anomaly is efficient for the earthquake prediction.
维普
万方数据
