基于水准剖面的山西断陷带现今活动性研究

根据跨山西断陷带的水准剖面观测资料,计算其垂直形变量和垂直形变速率,研究其现今垂直活动性。2006年以来的垂直形变揭示,山西断陷带东北段延怀盆地和蔚县盆地呈掀斜上升活动,北段阳原盆地和大同盆地以下降活动为主,晋中盆地为上下波动,临汾盆地呈现上升活动。2013年山西断陷带活动出现转折性变化,蔚县盆地大幅度下降,大同盆地、代县-定襄盆地、晋中盆地和临汾盆地均呈现不同程度的上升。

Study of Recent Activity in the Shanxi Rift Zone Based on Leveling Profile

In this paper, current vertical mobility of Shanxi is studied, according to observational data, calculation of vertical deformation variables and the vertical deformation rate of leveling across the Shanxi rift zone section. Since 2006, the vertical deformation of Shanxi with the northeast of the Yanhuai and Weixian basins show rising tilting activity. Further, north of the Yangyuan and the Datong basins present decreasing activity, the Jinzhong basin fluctuates and the Linfen basin shows rising activity. However, the tipping point of Shanxi activity appears in 2013. The Weixian basin has decreased by a large margin. The Datong, Daixian-Dingxiang, Jinzhong and Linfen basins have risen to varying degrees.