大别山及其周边现今垂直形变研究

摘要

基于1980年、2005年和2015年3期区域精密水准网观测资料,利用线性动态平差模型计算获取大别山地区水准网长期垂直运动速度场图像.研究发现,淮河平原地表下沉较为严重,大别山呈现弱隆升趋势运动,长江谷地边缘地区较大别山区呈现明显的隆升运动.跨郯庐断裂带水准剖面结果显示,垂直运动与地形呈负相关和弱相关.%As a collision orogenic belt,Dabie mountain is between the Yangtze and North China blocks.To calculate integrally the rate field of Dabie mountain,we use linear deformation models based on leveling observation data in 1980,2005 and 2015.Our research shows that:Huaihe plain ground is subsiding due to drawing groundwater;Dabie mountain is lifting as caused by inheritance movement;Yangtze river valley is also dominated by inheritance movement;and the southern segment of the Tanlu fault is in the stage of strain accumulation.Preparation for a potential earthquake should be undertaken.