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《Crustal Deformation and Earthquake》 2003-02
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MONITORING THREE DIMENSION CRUSTAL DEFORMATION IN SOUTH SUBURB OF XI'AN CITY BY GPS

Cui Duxin,Wang Qingliang,Wang Jianhua and Liang Weifeng (No.2 Crustal Deformation Monitoring Center,CSB,Xi'an\ 710054)  
In this paper,the three dimensional crustal deformation monitored by GPS in south suburb of Xi'an city is discussed.The feature of crustal deformation is analyzed and compared with the results from the traditional survey before 1990.The comparison indicates that the subsiding rate decreases a little,but the horizontal deformation is evident.The surveyed subsidence is in accord with the result simulated by using the Granular Displacement Model(GDM).The main factor causing ground deformation is pumping underground water too much.
【Fund】: 国家自然基金 ( 4 970 2 0 40 )资助
【CateGory Index】: P228.4;P227
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