地震地磁观测与研究2017，Vol.38Issue(1)：88-95,8.DOI:10.3969/j.issn.1003-3246.2017.01.015
利用GPS研究当前鄂尔多斯地块周缘地壳变形状态
Research on recent deformation characteristics around Ordos massif using CMONOC GPS reference station data
摘要
Abstract
We calculated twenty-four baseline time sequences around Ordos massif margin using twenty-four CMONOC GPS reference station observation data, and calculated six kinds of strain parameter time series in three significant deformation area base on block uniform strain model. The results show: ① The observation data of CMONOC is of high quality, it is able to monitor the crustal micro dynamic deformation of Ordos massif margin in some degree. ②The area strain state obtained from GPS continuous observation data is consistent with the regional tectonic stress state from geological research. ③ Since 2011, it is in dextral shear state under the action of compressive stress in Jin-Ji-Meng junction region in eastern margin of Ordos, it is also in dextral shear state in northwestern margin of Ordos, which is consistent with the mechanism of Alashan M 5.8 earthquake which is dominated dextral shear and slightly thrust component.关键词
GPS连续站/鄂尔多斯地块周缘/地壳形变/应变参数/阿拉善M5.8地震Key words
GPS reference station/Ordos massif margin/crustal deformation/strain parameters/Alashan M 5.8 earthquake引用本文复制引用
周军,李文超..利用GPS研究当前鄂尔多斯地块周缘地壳变形状态[J].地震地磁观测与研究,2017,38(1):88-95,8.基金项目
北京市哲学社会科学北京学研究基地项目(项目编号:BJXJD-KT2015-YB06) （项目编号:BJXJD-KT2015-YB06）
