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Gravity Inversion of Active Parameters of Main Active Fault in Beijing Area
Pages: 379-384+489
Year: Issue:  3
Journal: Journal of Seismological Research

Keyword:  Capital Circle Gravity Networkactive parameters of the active faultgravity inversionRobust-Bayesianleast-square estimation;
Abstract: Using the repeated gravity data of the Capital Circle Gravity Network from 1991 to 1999,combined with the initial movement model of the fault determined by geological investigation results,we invert the active parameters( strike-slip,dip-slip and tensile-dislocation) of four active faults in Beijing area by Robust-Bayesian least-square estimation method.The inversion results show that the active fault in Beijing was dominated by strike and slip and vertical lifting motions with extension motion from 1991 to 1999,however their movement rates were small which were about 2 mm /a.The inversed movement characteristic of the faults in NW trend are sinistral strike-slip normal fault,and the faults in NE trend are dextral strike-slip normal fault.
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