地震地磁观测与研究2017，Vol.38Issue(1)：15-20,6.DOI:10.3969/j.issn.1003-3246.2017.01.003
晋冀蒙交界地区S波分裂研究
S-wave splitting in the border area of Shanxi, Hebei and Inner Mongolia
摘要
Abstract
In this paper, by use of the data of ML 2 .0 seismic events recorded by 39 mobile stations and four fixed stations in the border region of Shanxi, Hebei and Inner Mongolia (38.5°— 40.7 °N, 111.1°— 115.6°E) from October 2014 to August 2015, and with SAM software for the S wave splitting study, the S wave polarization direction and the delay time in time and space domain has been investigated. The results show that there is a substantial change of the direction of polarization at the junction of Shanxi, Hebei and Inner Mongolia and Lingle Saharan region and Datong Basin, Tianzhen-Yanggao Basin, Yangyuan basin and surrounding areas of Hunyuan basin; the change amplitude of the delay time is in the scope of 0.01-0.08 seconds; the high value are mainly concentrated in the 0.01-0.03 seconds;and a high value occurs mainly near the Huai basin to the southern edge of the fault rupture and south of Hengshan. According to the results obtained here, it is thought that the subsurface anisotropy in the border area of Shanxi, Hebei and Inner Mongolia is more complex, and is necessary to pay close attention to the future seismic geological activity in there.关键词
S波分裂/各向异性/偏振方向/延迟时间Key words
S wave splitting study/anisotropy/the direction of polarization/delay time引用本文复制引用
张晖,韩晓明,高立新..晋冀蒙交界地区S波分裂研究[J].地震地磁观测与研究,2017,38(1):15-20,6.基金项目
中国地震局科技星火计划青年项目(编号:XH15009Y) （编号:XH15009Y）
