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Estimation of the gas hydrate saturation from multichannel seismic data on the western continental margin of the Chukchi Rise in the Arctic Ocean

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Title
Estimation of the gas hydrate saturation from multichannel seismic data on the western continental margin of the Chukchi Rise in the Arctic Ocean
Other Titles
다중채널 탄성파 자료를 통한 북극 척치고원 서쪽 대륙경계부의 가스하이드레이트 포화도 추정
Authors
Choi, Yeonjin
Kang, Seung-Goo
Jin, Young Keun
Hong, Jong Kuk
신성렬
김수관
최영일
Keywords
Estimation of gas hydrate saturation by the effective medium theory (EMT) modelGas hydrate along the western continental margin of the Chukchi Rise in the Arctic OceanIterative migration velocity analysisSeismic P-wave velocity modelbottom simulating reflection (BSRs)
Issue Date
2022
Citation
Choi, Yeonjin, et al. 2022. "Estimation of the gas hydrate saturation from multichannel seismic data on the western continental margin of the Chukchi Rise in the Arctic Ocean". FRONTIERS IN EARTH SCIENCE, 10(0): 1-18.
Abstract
A multichannel seismic survey was conducted to investigate the geophysical characteristics of gas hydrates along the western continental margin of the Chukchi Rise around an ARAON mound cluster, which was first recovered in 2016. In the seismic data, gas hydrate-related bottom simulating reflection was widely distributed along the western continental margin of the Chukchi Rise. High-precision seismic P- wave velocity was obtained to investigate the geophysical characteristics of the gas hydrate structures in the BSR areas. Iterative migration velocity analysis was used to construct a detailed P-wave velocity model from the acquired seismic data. The gas hydrate and free gas layers have abnormally high- and low-seismic P-wave velocities; the precise velocity model allows us to understand the detailed spatial distribution of gas hydrate and free gas structures. The effective medium theory model enables estimations of the gas hydrate saturation from constructed seismic P-wave velocity model. We propose the P-wave velocity and gas hydrate saturation models from acquired multichannel seismic data in the western continental margin of the Chukchi Rise for the first time.
URI
https://repository.kopri.re.kr/handle/201206/14064
DOI
http://dx.doi.org/10.3389/feart.2022.1025110
Type
Article
Station
Araon
Indexed
SCIE
Appears in Collections  
2022-2022, Survey of Geology and Seabed Enviromental Change in the Arctic Seas (22-22) / Hong, Jong Kuk (PM22050)
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