Late Quaternary Paleoceanographic Changes in the Northeastern Ulleung Basin, East Sea, Inferred from Variations in Biogenic Components SCIE SCOPUS KCI

Cited 1 time in WEB OF SCIENCE Cited 1 time in Scopus
Title
Late Quaternary Paleoceanographic Changes in the Northeastern Ulleung Basin, East Sea, Inferred from Variations in Biogenic Components
Author(s)
Suh, Yeon Jee; Hyun, Sangmin; Park, Chanhong
KIOST Author(s)
Suh, Yeon Jee(서연지)Hyun, Sang Min(현상민)
Publication Year
2013-09
Abstract
Two piston cores (DD09-ST21, DD09-ST39B) from the northeastern Ulleung Basin in the East Sea were obtained to investigate variations in the biogenic components (calcium carbonate, organic carbon) and biogeochemical processes (delta C-13 and delta N-15). The two cores had distinctive characteristics in terms of surface production, preservation and dissolution capacity of carbonate, and redox conditions of bottom-water. Core DD09-ST21 was characterized by an oxygen-depleted condition from 15 ka (MIS 2) to 60 ka (MIS 3). Core DD09-ST39B, on the other hand, showed oxic bottom-water conditions, possibly due to shallow water depth. These two cores with different redox condition showed opposite trends in terms of CaCO3, TOC, and C-37 alkenone concentrations. CaCO3 and C-37 concentrations were higher during the LGM in DD09-ST21 while lower contents were observed in DD09-ST39B in the same period. Moreover, consistently low TOC in DD09-ST39B and higher fluctuation of organic matters in DD09-ST21 may suggest difference in primary productivity, preservation capacity, or a potential dissolution effect. During the Holocene, the surface productivity of both cores increased, probably due to renewed ventilation and vertical mixing in the East Sea. Therefore, this study suggests spatial variation in production and preservation of biogenic components in the two cores since last 50 ka for DD09-ST39B and 80 ka for DD09-ST21 due to difference in environmental conditions such as water depth, bottom-water conditions, surface productivity and preservation.
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3124
DOI
10.1007/s12601-013-0027-9
Bibliographic Citation
OCEAN SCIENCE JOURNAL, v.48, no.3, pp.289 - 300, 2013
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
Subject
LAST GLACIAL MAXIMUM; JAPAN-SEA; ORGANIC-MATTER; LATE PLEISTOCENE; PALEOENVIRONMENTAL CHANGES; SURFACE TEMPERATURES; EMILIANIA-HUXLEYI; SUBPOLAR FRONT; INTERPLAIN GAP; KOREA PLATEAU
Keywords
East Sea; biogenic components; productivity; paleoceanography
Type
Article
Language
English
Document Type
Article
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
Related Researcher
Research Interests

Marine environmentology,Marine environmentology,Organic chemistry,해양환경학,화학해양학,유기화학

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