【摘要】 利用中国大陆构造环境监测网络2009、2011年2期的GPS数据资料,计算得到华北地区相对于稳定的欧亚板块的区域水平速度场。根据水平速度场,基于连续变形假说,采用三角形方法计算了区域应变场特征值,并用GMT绘制了其分布图像。结合地震地质资料对该区的地壳水平形变特征进行分析研究,得出了有意义的结论:(1)水平相对运动与应变率场分布显示,板块交界处的断裂带及其附近区域地壳运动差异显著,应变率量值较为突出;(2)山西断陷带的活动方式与地质结果具有差异性;(3)区内最大剪应变、面膨胀的高值区主要位于环渤海的京津唐地区、山西断陷带中南部及郯庐断裂带中南段。更多还原

【Abstract】 With the GPS observation data of the CMONOC from 2009 to 2011,the velocity field of the north china has been obtained.Based on the continuous deformation hypothesis,we use the data of the horizontal velocity field to compute the distribution of horizontal strain field in this region by the triangle method and its distribution image was drawn by GMT.The characteristics of horizontal crustal deformation zone were analyzed by combining with seismic and geologic data,and the conclusions were drawn intentionally.更多还原