Bottom-intensified low-frequency deep current variability around Ulleung Interplain Gap of the southwestern East Sea

DC Field Value Language
dc.contributor.author 김윤배 -
dc.contributor.author 장경일 -
dc.contributor.author 이재학 -
dc.date.accessioned 2020-07-16T11:30:03Z -
dc.date.available 2020-07-16T11:30:03Z -
dc.date.created 2020-02-11 -
dc.date.issued 2012-11-06 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/27417 -
dc.description.abstract Moored current measurements were made over steep bottom slope around Ulleung Interplain Gap (UIG) in the southwestern East Sea. The UIG serves as a main passageway for the exchange of deep waters between the Ulleung Basin and the Japan Basin. Deep circulation in the UIG is characterized by a two-way flow system with relatively weak southward flows directed into the UB over about two-thirds of the western UIG and strong, quasi-persistent and narrow compensating northward outflows with the strongest flow against the eastern wall near Dokdo (Chang et al., 2009).Because of persistency and strength of the northward flow in the eastern UIG, Chang et al. (2009) named this flow the Dokdo Abyssal Current (DAC). The current below 300 m is bottom-intensified and has nearly depth-independent flow. Near bottom, the spectral peaks of the current were found near 10, 20, and 60 days. The DAC variability near 10 and 20 days are reasonably consistent with the linear theory of Topographic Rossby Waves (TRWs) in following aspects; 1) The motion is columnar and bottom-intensified, 2) The theoretical cutoff frequency is similar to the observation, and 3) The observation-based angles of the wavenumber vector are in good agreement with the theoretical ones.Basin. Deep circulation in the UIG is characterized by a two-way flow system with relatively weak southward flows directed into the UB over about two-thirds of the western UIG and strong, quasi-persistent and narrow compensating northward outflows with the strongest flow against the eastern wall near Dokdo (Chang et al., 2009).Because of persistency and strength of the northward flow in the eastern UIG, Chang et al. (2009) named this flow the Dokdo Abyssal Current (DAC). The current below 300 m is bottom-intensified and has nearly depth-independent flow. Near bottom, the spectral peaks of the current were found near 10, 20, and 60 days. The DAC variability near 10 and 20 days are reasonably consisten -
dc.description.uri 1 -
dc.language English -
dc.publisher Korean -
dc.relation.isPartOf International workshop-Marginal Seas in Change: the East Sea and the Mediterranean Case -
dc.title Bottom-intensified low-frequency deep current variability around Ulleung Interplain Gap of the southwestern East Sea -
dc.type Conference -
dc.citation.conferencePlace KO -
dc.citation.endPage 1 -
dc.citation.startPage 1 -
dc.citation.title International workshop-Marginal Seas in Change: the East Sea and the Mediterranean Case -
dc.contributor.alternativeName 김윤배 -
dc.contributor.alternativeName 이재학 -
dc.identifier.bibliographicCitation International workshop-Marginal Seas in Change: the East Sea and the Mediterranean Case, pp.1 -
dc.description.journalClass 1 -
Appears in Collections:
East Sea Research Institute > Ulleungdo·Dokdo Ocean Science Station > 2. Conference Papers
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