摘要
收集整理了研究区内近年来5期的GPS区域观测站和27个GPS连续观测站数据,在解算站坐标的基础上,计算得到了GPS区域站水平形变和GPS连续站垂直形变。分析研究了张家口-渤海地震构造带(张渤带)近期形变状态,得出张渤带在2011—2013年时段内形变相对较大且区别于以前的形变形态。结果显示:张渤带近期受到明显挤压,呈应力应变能积累增强的趋势,表明张渤带地壳形变差异活动增强,具有地震孕育的形变背景。
In this study, we calculated horizontal deformation of local GPS station and vertical deformation of the 27 GPS continuous station in the Zhangjiakou-bohai seismic belt area on basis of 5 periods＇ observation data of the local GPS station and the 27 continuous stations. The results indicate that the deformation of the Zhangjiakou-bohai seismic belt in the period of 2011-2013 is relatively large and different than before. The Zhangjiakou-bohai seismic belt is in compressive stress state and the strain energy accumulation is enhancing, which indicates that the deformation difference activity is increasing and the background of developing earthquakes exists in the area.
出处
《华北地震科学》
2016年第3期37-41,共5页
North China Earthquake Sciences
基金
天津市地震局青年基金项目(20131021)
