다중 탄성파 자료를 이용한 황해 저층수 영상화

DC Field Value Language
dc.contributor.author 이상훈 -
dc.contributor.author 김한준 -
dc.contributor.author 주형태 -
dc.contributor.author 문혜진 -
dc.contributor.author 김충호 -
dc.contributor.author 문성훈 -
dc.contributor.author 이광훈 -
dc.contributor.author 이수환 -
dc.contributor.author 전청균 -
dc.date.accessioned 2020-07-15T18:50:42Z -
dc.date.available 2020-07-15T18:50:42Z -
dc.date.created 2020-02-11 -
dc.date.issued 2017-04-11 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/24182 -
dc.description.abstract The Yellow Sea Bottom Cold Water (YSBCW) is a cold water mass lying in the deep part of the Yellow Sea during the warm season. We acquired multichannel seismic (MCS) data using an air gun source to image the structure of the YSBCW. The MCS data recorded reflections from sea water. The recognition of these reflections was confirmed by finite-difference seismic modeling in the frequency-domain. The seismic section from MCS data enabled discrimination of water masses distinctly separated by reflecting horizons. The structure of the water masses is fairly consistent with temperature-depth variations obtained using expandable bathythermographs (XBT) casts. The YSBCW is imaged as the lowermost water mass, maximally 40 m thick, that extends as lens form along the sea bottom under the warm mixed layer. The correlation of XBT measurements and the seismic section indicates a rapid decrease in temperature from around 11oC to 8oC in the uppermost part of the YSBCW. A transition zone between the mixed layer and the underlying YSBCW is also defined. This transition zone has fairly uniform thickness of 14~18 m and marks an interval of rapid temperature drop, indicating vigorous thermal mixing. Our study demonstrates that MCS profiling is a useful and reliable tool to image fine structures in the shallow Yellow Sea.data recorded reflections from sea water. The recognition of these reflections was confirmed by finite-difference seismic modeling in the frequency-domain. The seismic section from MCS data enabled discrimination of water masses distinctly separated by reflecting horizons. The structure of the water masses is fairly consistent with temperature-depth variations obtained using expandable bathythermographs (XBT) casts. The YSBCW is imaged as the lowermost water mass, maximally 40 m thick, that extends as lens form along the sea bottom under the warm mixed layer. The correlation of XBT measurements and the seismic section indicates a rapid decrease in temperature from around 11oC to 8oC in the uppermost part of the YSBCW. A transition zone between the mixed layer and the underlying YSBCW is also defined. This transition zone has fairly uniform thickness of 14~18 m and marks an interval of rapid temperature drop, indicating vigorous thermal mixing. Our study demonstrates that MCS profiling is a useful and reliable tool to image fine structures in the shallow Yellow Sea. -
dc.description.uri 1 -
dc.language English -
dc.publisher PAMS -
dc.relation.isPartOf Pacific Asian Marginal Seas Meeting -
dc.title 다중 탄성파 자료를 이용한 황해 저층수 영상화 -
dc.title.alternative Imaging the Yellow Sea Bottom Cold Water from multichannel seismic data -
dc.type Conference -
dc.citation.conferencePlace KO -
dc.citation.endPage 155 -
dc.citation.startPage 155 -
dc.citation.title Pacific Asian Marginal Seas Meeting -
dc.identifier.bibliographicCitation Pacific Asian Marginal Seas Meeting, pp.155 -
dc.description.journalClass 1 -
Appears in Collections:
Marine Environmental & Climate Research Division > Marine Active Fault Research Unit > 2. Conference Papers
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