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《Global Geology》 2012-04
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Deep structure iversion by measurement of verhical gradient of gravity for a profile of Changbai Mountain area

HUAN Heng-fei,WU Yan-gang,GUAN Yan-wu,YANG Chang-bao College of Geo-exploration Science and Technology,Jilin University,Changchun 130026,China  
In connection with the characteristics of high-resolution in gravity gradient,we used the data of measured vertical gravity gradient in Changbai Mountain area to inverse its deep structure by using gradient space plot.The step models prove that the gradient space plots can give the information of the structural dip and pour surface.Combined with gravity gradient profile,we can build a geometric model of the subsurface structure,and then explaine some of the complex structure.Based on the measured Bouguer gravity anomaly and the measured gravity gradient anomaly contrast,the gravity gradient has higher resolution than gravity anomaly.When the gradient method is applied in the measured gravity gradient data processing,the results show that the method to determine the density changes in the level of the interface position and depth has good effect.
【Fund】: 国家自然科学基金重点项目(40930314);; 吉林大学基本科研业务费(450060445194)联合资助
【CateGory Index】: P548
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