Occurrence of near-seafloor gas hydrates and associated cold vents in the Ulleung Basin, East Sea
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Title
- Occurrence of near-seafloor gas hydrates and associated cold vents in the Ulleung Basin, East Sea
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Author(s)
- Bahk, Jang-Jun; Kim, Ji-Hoon; Kong, Gee-Soo; Park, Yosup; Lee, Huen; Park, Youngjun; Park, Keun Pil
- KIOST Author(s)
- Park, Yo Sup(박요섭)
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Alternative Author(s)
- 박요섭
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Publication Year
- 2009-12
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Abstract
- During the site survey for drill sites of the Ulleung Basin Gas Hydrate Expedition 1, near-seafloor gas hydrates were discovered in core sediments from basin plain (2010-2130 m water depth) and southern slope (820-1160 m). The gas hydrates were exclusively retrieved from the sites of high backscatter intensity anomalies of 13 kHz multi-beam echosounding, implying high seafloor reflectivity. In high-resoltition (2-7 kHz) subbottom profiles, the coring sites are also characterized by narrow (250-850 m wide) acoustic blank zones reaching seafloor, where they have surface expressions of low-relief (
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ISSN
- 1226-4806
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/4235
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DOI
- 10.1007/s12303-009-0039-8
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Bibliographic Citation
- GEOSCIENCES JOURNAL, v.13, no.4, pp.371 - 385, 2009
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Publisher
- SPRINGER HEIDELBERG
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Subject
- DNEPR PALEO-DELTA; BLACK-SEA; JAPAN SEA; CONTINENTAL-SLOPE; MARINE-SEDIMENTS; CASCADIA MARGIN; METHANE FLUX; DEEP-WATER; CONSTRAINTS; SEEPS
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Keywords
- gas hydrates; cold vents; acoustic backscatter; Ulleung Basin; East Sea
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Type
- Article
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Language
- English
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Document Type
- Article
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