山西地区近期垂直形变场分析

摘要

利用山西及太原地区最新的50年尺度的形变资料，分析、研究了区域形变场及其时空演化特征，认为山西地堑系的垂直形变场反映出其周围山区及次级隆起主要表现为持续上升，盆地主要呈趋势下降的总体特征。太原地区的地面沉降主要是由超量开采地下水引起的，南部地区的沉降速率大于北部。地堑系内这种垂直形变场的态势，说明本区构造的垂直差异活动既有继承性、又有新生性的特点。%Using the deformation data of the last 50 years in Shanxi area,the deformation field and its space-time evolution characteristics are studied.The vertical deformation field of Shanxi graben system shows that the mountains around the graben system and the secondary uplift area are on the continual rise,and that the basin area is mainly in subsidence.The subsidence in Taiyuan area is caused by exploiting ground water excesively,and the subsidence rate of south area is greater than that of north area.The deformation field in the graben system indicates that the tectonic activity in this area have chracteristics either newborn or inherent.