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THE ANALYSIS AND DISCUSSION OF AT CHAOYANG SEISMICSTATION GROUND TILT OBSERVATION THE EARTHQUAKE REFLECTING PERFORMANCE

ZHAO Yong-zhi;JIA Xiao-dong;ZHAN Xiao-fang;HUANG Liang;TENG Teng;ZOU Xiang-rong;Chaoyang Seismic Station;Earthquake Administration of Liaoning Province;  
Combined with the earthquakes in Chaoyang and surrounding area, the abnormal changes of observation data of ground tilt are analyzed. The results showed that there were obvious changes before Ms≥3.0 earthquakes occured And it has two characteristics as the following showed:(1) Earthquakes of the same range, has the unified components of the ground tilt abnormality before the earthquake occured;( 2) Chaoyang ground tilt observation tendency anomaly has a strong direction, but the amplitude characteristic is not obvious, which has has little relationship.with the epicentral distance.
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