从GPS复测结果初步研究华北北部的水平形变及构造活动

英文篇名：Primary Study on Horizontal Deformation and Tectonic Activity Using GPS Results in Northern Part of North China
中文刊名：中国地震
英文刊名：EARTHQUAKE RESEARCH IN CHINA
作者：郭良迁 ; 应绍奋
英文作者：Guo Liangqian\ Ying Shaofen (First Crustal Deformation Monitoring Center ; CSB ; Tianjin 300180 ; China)
中文关键词：GPS点基线变化 ; 现阶段构造活动
英文关键词：Baseline variation of GPS point\ Recent tectonic activity
出版日期：1998-12-25
机构：国家地震局第一地形变监测中心
年：1998
期：04
出版单位：中国地震

摘要

利用华北地区１９９５～１９９６年的ＧＰＳ测量计算结果作了基线变化和位移矢量的分析，并据此研究了现代构造活动。总体上以近东西向的区域性拉张为主，南北向存在差异。山西断陷带和渤海地区拉张显著，郯庐断裂带的沂水—郯城段具有挤压兼走滑。包头—张家口—宁河一线为一基线缩短带，其南北两侧的变化不同，是一个区域性变化的分界带。建昌—唐山—固城一线为北东向的基线缩短带，它正与唐山—邢台地震活动带一致，表明现阶段仍有一定的活动性。
In this paper,the baseline variation and displacement vector are studied,using the results of GPS survey between 1995～1996 in North China,and based on those results,the recent tectonic activity also have been studied.The tensional activity in proximate east west direction is characterized in the region,but there are some differences in north south direction.The tensional activity is significance in Shanxi fault subsidence zone and Bohai region,while the compression with strike slip is characterized in Yishui Tancheng segment of Tanlu fault zone.The baseline shorting zone is distributed along Baotou Zhangjiakou Ninghe areas,it is a boundary zone of regional variation that a lot of differences on crystal horizontal deformation are discovered between south part and north part in this zone.The baselines shorting zone in NE direction is distributed along the Jianchang Tangshan Gucheng area,it is consisted with the belt that of along Tangshan Xingtai seismic zone,and showing that the tectonic activity is being continued recently.

引文

邓起东、范福田，1980，华北断块新生代、现代地质构造特征，《华北断块区的形成与发展》，192～205，北京：科学出版社。国家地震局《一九七六年唐山地震》编辑组，1982，一九七六年唐山地震，北京：地震出版社。阎海滨、朱学健，19996，包头西64级地震及阴山地震带震源机制解与区域应力场，震情研究，第4期，22～29。袁宝印、孙建中，1980，华北新生代沉积与断块构造，《华北断块区的形成与发展》，221～229，北京：科学出版社。杨森楠、杨巍然主编，1985，《中国区域大地构造学》，北京：地质出版社。