本文收集跨关中地区2006~2018年13期一等精密水准观测资料,利用线性动态平差方法,通过整体平差获得跨区域长时间尺度的地壳垂直运动速率场图像,基于获得的垂直运动速率结果,对跨关中地区垂直形变趋势特征进行定量定性分析。结果表明,除西安地区以外的渭河盆地地区下沉速率不足1 mm/a,鄂尔多斯地块南部隆升速率为3~5 mm/a,秦岭构造带北麓隆升速率为3 mm/a,而秦岭腹地的隆升速率不足1 mm/a。利用矩形位错模型对区域内断层的滑动速率和断层闭锁进行反演,结果显示,口镇-关山断裂的倾滑速率为6.55 mm/a,闭锁深度为4.6 km;渭河断裂的倾滑速率为3.21 mm/a,闭锁深度为3.4 km;秦岭北缘断裂的倾滑速率为5.34 mm/a,断裂闭锁深度较大,为9.8 km。基于以上结论,结合前人对关中地区的研究成果,探讨分析研究区现今地壳垂直形变特征与动力机制之间的关系,为区域地震危险性判定及动力学研究提供一定的帮助。"/> To get the crustal vertical movement rate result, we use linear deformation models based on 13-period first-order leveling observation data from 2006 to 2018 in the Guanzhong region. On the basis of the crust vertical rate results, we make qualitative and quantitative analysis of the research area. It is shown that the vertical rate of Weihe basin, except the Xi’an area, is about -1 mm/a, the vertical rate of southern Ordos block is 3-5 mm/a, the vertical rate of northern piedmont of Qinling is 3 mm/a, and the vertical rate in Qinling is less than 1 mm/a. The dip rate and the locked depth of the main faults in the research area are inversed, based on the vertical movement rate by means of rectangular dislocation model. The inversion results show that the dip rate of Kouzhen-Guanshan fault is 655 mm/a with 4.6 km locked depth, the dip rate of Weihe fault is 3.21 mm/a with 3.4 km locked depth, and the dip rate of north margin of Qinling fault is 5.34 mm/a with 9.8 km locked depth. Finally, we provide reasonable interpretation and analysis about the vertical movement result. Combining with previous research results of this research zone, the relation between the present crustal deformation and dynamic mechanism will be explored for providing certain basic data in regional seismic risk and geodynamic research."/> 跨关中地区现今地壳垂直形变剖面
大地测量与地球动力学
 
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大地测量与地球动力学
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跨关中地区现今地壳垂直形变剖面
The Present Crustal Vertical Deformation Profile across the Guanzhong Region
 
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