SCSIO OpenIR  > 中科院边缘海地质重点实验室
Accurate measurement and inversion for the seafloor positions of Hadal landers
Chen Han3; Qiu XueLin3; He EnYuan; Wang Yuan1; Chen ChuanXu2; Chen Jun2,3
2019
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
Volume62Issue:5Pages:1744
AbstractDue 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.
DepartmentOMG
KeywordOcean Bottom Seismometer Hadal lander Cross-line shooting operation Seafloor position correction Monte Carlo inversion
DOI10.6038/cjg2019M0009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17962
Collection中科院边缘海地质重点实验室
Affiliation1.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
Recommended Citation
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.
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.
Files in This Item:
File Name/Size DocType Version Access License
Accurate measurement(4788KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.