Research of the long-term gravity change pattern related to Chile earthquake via GRACE RL05 data

doi:10.6038/cjg2019L0642

	Research of the long-term gravity change pattern related to Chile earthquake via GRACE RL05 data
	Yan ChangDa 1,2,3; Xu Ya 1,2
	2019-06-01
发表期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN	0001-5733
卷号	62 期号:6 页码:2115-2127
摘要	Large scale gravity change related to earthquakes could be observed by GRACE satellite gravity data and the changing patterns could be recognized. Co-seismic and post-seismic gravity change could be observed close to the epicenter of the M(w)8.8 Chile earthquake in 2010. This paper calculated the co-seismic and post-seismic gravity change of the 2010 Chile earthquake based on the GRACE RL05 Level-2 time-variable gravity data. From the co-seismic result, we discovered that the co-seismic maximum gravity change reached - 5 mu Gal. Our method of reducing the disturbance of water mass change by calculating the 3-year average before and after the earthquake performed well. From the post-seismic result, we observed that the gravity change from 2011 to 2016 having a first increase then decrease pattern. The fitting to the postseismic change revealed that the post-seismic gravity change is about l mu Gal close to the epicenter, and the characteristic time is about 1. 1 year. The Chile earthquake didn't show a typical postseismic change of two terms (short and long).
关键词	Chile Earthquake GRACE Post-seismic gravity change
DOI	10.6038/cjg2019L0642
关键词[WOS]	SUMATRA-ANDAMAN EARTHQUAKE ; DEFORMATION ; SUBSIDENCE ; MAULE
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000470821500011
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.iggcas.ac.cn/handle/132A11/92538
专题	油气资源研究院重点实验室
通讯作者	Xu Ya
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	油气资源研究院重点实验室; 中国科学院地质与地球物理研究所
通讯作者单位	油气资源研究院重点实验室; 中国科学院地质与地球物理研究所
推荐引用方式 GB/T 7714	Yan ChangDa,Xu Ya. Research of the long-term gravity change pattern related to Chile earthquake via GRACE RL05 data[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(6):2115-2127.
APA	Yan ChangDa,&Xu Ya.(2019).Research of the long-term gravity change pattern related to Chile earthquake via GRACE RL05 data.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(6),2115-2127.
MLA	Yan ChangDa,et al."Research of the long-term gravity change pattern related to Chile earthquake via GRACE RL05 data".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.6(2019):2115-2127.