三峡流动重力异常模糊识别函数与中弱地震的关系

RELATIONSHIP BETWEEN FUZZY IDENTIFICATION FUNCTIONS OF GRAVITY CHANGES AND MEDIUMWEAK EARTHQUAKES IN THE YANGTZE GORGES AREA

用模糊识别方法研究了长江三峡流动重力网区１９８５～１９９５年１０期高精度重力测量资料。结果表明：绝大多数高异常从属函数与本区几个中弱地震有较好的相关性，发震时间多为计算时所用的最后一期测量之后的一年期间。

The ten terms of the gravity data, measured in the Yongtze Gorges gravity network from 1985 to 1995 are analyzed by using the method of fuzzy identification ,and the relationship between the sub function and several mediumweak earthquakes is studied .The results show that most high abnormals of sub function are related to the earthquake preparation and the earthquake occured about one year later than the last term of measurement for calculation of the sub function.