KOPRI Repository

Surface water productivity and sediment transport by Bering Strait throughflow in the Chukchi Shelf (the western Arctic Ocean) during the Holocene

Cited 3 time in wos
Cited 4 time in scopus

Full metadata record

DC Field Value Language
dc.contributor.authorKhim, Boo-Keun-
dc.contributor.authorLee, Mi Jung-
dc.contributor.authorCho, Hyen Goo-
dc.contributor.authorPark, Kwangkyu-
dc.date.accessioned2021-11-29T05:06:21Z-
dc.date.available2021-11-29T05:06:21Z-
dc.date.issued2018-05-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/13021-
dc.description.abstractDiverse paleoceanographic proxies from three sediment cores (GC12ex, JPC35, and JPC30) collected from the Chukchi Shelf north of the Bering Strait elucidate the Holocene paleoceanographic changes (surface water productivity and sediment transport) caused by the Bering Strait throughflow from the Bering Sea into the Chukchi Sea. Lithology of three sediment cores identified the same three units. Based on comparison and correlation to adjacent age-dated cores as well as AMS C-14 dates of core GC12ex, the boundary between Unit 1 and Unit 2a is dated about 8500 cal. yr BP, and the boundary between Unit 2a and Unit 2b is also dated about 4500 cal. yr BP. Consistent down-core profiles of the geochemical and isotopic properties among the three cores differentiate the paleoceanographic conditions corresponding to lithologic units. Based on the biogenic opal, total organic carbon, and delta C-13 values, Unit 1 is characterized by low surface water marine productivity under relatively shallow water with weak transport of Bering Strait throughflow. Unit 2a shows a mixture of terrestrial and marine contributions, indicating the onset of increased marine surface water productivity after the main flooding (similar to 11,500 cal. yr BP) of the Bering Strait by the Holocene sea-level rise. Unit 2b exhibits stable and enhanced marine biogenic opal production similar to the present-day oceanographic conditions. Such paleoceanographic changes were confirmed by the clay minerals (smectite, illite, kaolinite, and chlorite) and detrital isotopes (epsilon(Nd) and Sr-87/Sr-86). Thus, the Bering Strait throughflow played an important role on surface water productivity and sediment deposition in the Chukchi Shelf in response to Holocene sea-level rise after the opening of the Bering Strait.en_US
dc.languageEnglishen_US
dc.language.isoenen_US
dc.subjectPhysical Geographyen_US
dc.subjectGeologyen_US
dc.subject.classificationAraonen_US
dc.titleSurface water productivity and sediment transport by Bering Strait throughflow in the Chukchi Shelf (the western Arctic Ocean) during the Holoceneen_US
dc.title.alternative척치해 대륙붕의 홀로세 동안 표층수 생산성과 베링해협 유입수에 의한 퇴적물 수송en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationKhim, Boo-Keun, et al. 2018. "Surface water productivity and sediment transport by Bering Strait throughflow in the Chukchi Shelf (the western Arctic Ocean) during the Holocene". <em>HOLOCENE</em>, 28(5): 814-826.-
dc.citation.titleHOLOCENEen_US
dc.citation.volume28en_US
dc.citation.number5en_US
dc.identifier.doi10.1177/0959683617744265-
dc.citation.startPage814en_US
dc.citation.endPage826en_US
dc.description.articleClassificationSCI-
dc.description.jcrRateJCR 2016:36.7021276595745en_US
dc.subject.keywordBering Straiten_US
dc.subject.keywordHoloceneen_US
dc.subject.keywordgeochemistryen_US
dc.subject.keywordisotopeen_US
dc.subject.keywordpaleoceanographyen_US
dc.subject.keywordsea-level changeen_US
dc.subject.keywordsediment sourceen_US
dc.identifier.localId2017-0325-
dc.identifier.scopusid2-s2.0-85042908505-
dc.identifier.wosid000432240500011-
Appears in Collections  
2016 Polar Academic Program (PE16900)
Files in This Item

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

Browse