江苏省近期形变特征分析

发布时间：2018-01-16 13:40

本文关键词：江苏省近期形变特征分析　出处：《大地测量与地球动力学》2017年05期 　论文类型：期刊论文

【摘要】：利用江苏省内GPS连续站基线时间序列分析江苏省整体形变状态,由GPS流动站观测资料计算应变率场,并根据跨断层流动水准资料得到郯庐断裂带江苏段和茅山断裂垂直形变速率,根据以上结果研究江苏省主要断裂2011~2015年的形变特征。结果表明,江苏省受控于挤压应力场作用,大部分区域应变方向为东西向;郯庐断裂带江苏段处于南北向拉张挤压梯度带,垂直形变速率处于正常活动水平;茅山断裂的水平和垂直观测结果均反映出该区域为拉张性质。
[Abstract]:Based on the baseline time series of GPS continuous station in Jiangsu province, the deformation state of Jiangsu province is analyzed, and the strain rate field is calculated from the observation data of GPS mobile station. The vertical deformation rates of Jiangsu and Maoshan faults in the Tanlu fault zone are obtained based on the level data of cross-fault flow. Based on the above results, the deformation characteristics of the main faults in Jiangsu Province from 2011 to 2015 are studied. Jiangsu Province is controlled by the extrusion stress field and most of the regional strain directions are east-west. The Jiangsu section of the Tanlu fault zone is located in the north-south extensional compression gradient zone, and the vertical deformation rate is at the normal activity level. The horizontal and vertical observations of Maoshan fault show that the area is extensional.
【作者单位】：江苏省地震局;
【基金】：江苏省测绘地理信息科研项目(JSCHKY201510) 江苏省地震局青年科学基金(201601) 郯庐断裂带三维地震构造分段模型与地震预测研究专项(TYZ20160110)~~
【分类号】：P228.4;P315.7
【正文快照】： 江苏省地跨华北断块区与下扬子断块区两个大地构造单元,省内断裂构造较为发育,按走向可分为北东向、北西向、北北东向和近东西向4组,其中北东向断裂在数量上占优势。省内主要的活动断裂有:郯庐断裂带、淮阴-响水口断裂和茅山断裂等,其中郯庐断裂带和茅山断裂自1970年以来发生

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