마지막빙하기~홀로세 동안 남극 남스코티아해에서 산출되는 규조류의 안정동위원소 성분변화

Title
마지막빙하기~홀로세 동안 남극 남스코티아해에서 산출되는 규조류의 안정동위원소 성분변화
Alternative Title
Diatom stable isotopes of Last Glacial to Holocene in the South Scotia Sea, West Antarctica
Author(s)
김진경; 우경식; 윤호일; 현상민; 유해수
KIOST Author(s)
Hyun, Sangmin(현상민)
Publication Year
2010-08-31
Abstract
The gravity core was obtained from the slope of the South Scotia Sea, West Antarctica. Core sediments are mainly composed of laminated diatomaceous ooze and homogeneous silty clay. Stratigraphy is based on total organic carbon content and magnetic susceptibility with five radiocarbon dates. Oxygen, carbon and nitrogen isotopes of diatoms and diatom-bound organic matter are analyzed. The δ18O record show that the ~1.5‰ variations in Last Glacial to Holocene reflect the isotopic composition changes of surface seawater. It also shows that the transient depleted signals during deglaciation may imply the melt-water input. The δ13C values are depleted during Last Glacial relative to the Holocene, which indicate lower productivity during cold period. The anti-correlation patterns between δ15N and δ13C values during Last Glacial and Neoglacial periods may result from the restricted vertical mixing due to the sea ice extension.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/28781
Bibliographic Citation
10th International Conference on Paleoceanography, pp.15, 2010
Publisher
ICP
Type
Conference
Language
English
Publisher
ICP
Related Researcher
Research Interests

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

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse