常熟地震台水管倾斜仪与垂直摆倾斜仪同震响应对比分析

COMPARATIVE ANALYSIS OF CO-SEISMIC RESPONSE BETWEEN WATER-TUBE AND VERTICAL PENDULUM TILTMETERS IN CHANGSHU SEISMOSTATION

对常熟台水管仪与垂直摆记录到的同一地震的地倾斜响应进行对比分析,探讨了同震形变响应的3个基本特征。结果表明:1)两套仪器的地震延迟时间、响应持续时间与震级及震中距均成正比;2)水管仪的变形幅度与震级成正比,与震中距成反比;垂直摆的变形幅度主要与震级有关,但与震中距也有一定关系。

Three basic characteristics of the coseismic deformation response were analyzed by the Changshu station tube instrument and vertical pendulum which recorded the same earthquake ground tilt response, the results show that ： 1 ） the earthquake delay time and response duration recorded by the two sets of instruments are proportional to the magnitude and the epicenter distance ; 2） the deformation amplitude of the pipe instrument is proportion- al to the magnitude, inversely proportional to the epicentral distance ; the deformation amplitude of vertically pendulum is related to the magnitude, and has a certain relationship with the epicentral distance.