晋冀蒙地区的垂直形变特征

基于1998、2006和2013年3期水准复测资料,平差计算得到1998~2006年和2006~2013年的垂直形变速率及其垂直形变速率梯度。根据计算结果研究晋冀蒙地区的地壳垂直形变运动趋势以及主要断裂带的活动性,分析区域垂直形变速率和垂直形变速率梯度的演变。结果揭示出吕梁山地块后一时段上升速率增加、太行山地块由前一时段上升变为后一时段下降、盆地地带变化复杂的垂直形变态势。

Vertical Deformation Characteristics of Shanxi-Hebei-Inner Mongolia Area

Based on collation and adjustment of the 1998, 2006 and 2013 leveling survey data of the Shanxi-Hebei-Inner Mongolia region, we obtain the vertical deformation rate and gradient for the periods of 1998-2006 and 2006-2013. We then analyze the regional geological unit of the Shanxi-Hebei-Inner Mongolia vertical deformation rates, the evolution of the gradient and the main fault zone activity properties. The result shows that the vertical deformation rise rate of Lüliang mountain increases, the vertical deformation rise rate of Taihang mountain declines, and the Yunzhong mountain and Xizhou mountain piedmont fault turns to reverse fault. The activity of Kouquan fault, North Yanggao basin fault, South Yanggao basin fault and South Weixian basin fault, all present normal fault activity.