Accurate measurement and inversion for the seafloor positions of Hadal landers

doi:10.6038/cjg2019M0009

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	Accurate measurement and inversion for the seafloor positions of Hadal landers
	Chen Han 1,4; Qiu XueLin 1,4; He EnYuan 1; Wang Yuan 2; Chen ChuanXu 3; Chen Jun 3,4
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2019-05-01
卷号	62 期号:5 页码:1744-1754
关键词	Ocean Bottom Seismometer Hadal lander Cross-line shooting operation Seafloor position correction Monte Carlo inversion
ISSN号	0001-5733
DOI	10.6038/cjg2019M0009
英文摘要	Due to the influence of ocean currents, Hadal landers deviate from the launch points during dives. The deviation offset and direction are difficult to be estimated. Moreover, the underwater acoustic positioning method is not suitable in the Hadal areas. Through the cross-line air-gun shooting operation carrying out on the sea surface, and by using the accurate position and timing information of each air-gun shot, as well as the arrival times of direct water waves recorded by the Ocean Bottom Seismometer (OBS), the seafloor positions of Hadal Landers can be measured precisely. In this method, the collected data are preprocessed and inversed for the actual landing positions of Wanquan Hadal Lander, using the Monte Carlo method combined with the least square method. The obtained position correction offsets of the three dives are 211 m, 178 m and 861 m respectively, with different deviation directions from each other. The measurement precision is +/- 20 m, which is much more accurate than the previous ones. In addition, this method determines precise locations of the three seafloor markers and provides reliable underwater reference coordinates for the future 10000 m-type unmanned or manned submersibles.
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000467308600014
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/91489]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者	Qiu XueLin
作者单位	1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China 2.Chinese Acad Sci, Key Lab Petr Resource Res, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen Han,Qiu XueLin,He EnYuan,et al. Accurate measurement and inversion for the seafloor positions of Hadal landers[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(5):1744-1754.
APA	Chen Han,Qiu XueLin,He EnYuan,Wang Yuan,Chen ChuanXu,&Chen Jun.(2019).Accurate measurement and inversion for the seafloor positions of Hadal landers.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(5),1744-1754.
MLA	Chen Han,et al."Accurate measurement and inversion for the seafloor positions of Hadal landers".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.5(2019):1744-1754.