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Late Holocene paleoclimatic record of sediment near JoinvilleIsland, Antarctic Peninsula

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Title
Late Holocene paleoclimatic record of sediment near JoinvilleIsland, Antarctic Peninsula
Other Titles
남극반도 북부 주변의 웨델해 코어 퇴적물을 이용한 후기 홀로세의 고기후 연구
Authors
Lee, Min Kyung
Yoon, Ho Il
Bak, young-suk
Yoo, Kyu-Cheul
Keywords
고기후; 남극반도; 해양퇴적물
Issue Date
2014
Citation
Lee, Min Kyung, et al. 2014. Late Holocene paleoclimatic record of sediment near JoinvilleIsland, Antarctic Peninsula. 대한지질학회 추계지질과학 연합학술대회. 하이원컨벤션호텔. 2014.10.29~2014.12.31.
Abstract
A 4.76-m-long sediment core JV10-GC01 covering about 4000 years was collected near the Joinville Island, which is located on the northern tip of the Antarctic Peninsula. Six AMS radiocarbon ages were determined by carbonate shells. No age inversions were observed, implying a lack of reworking during deposition. Sedimentological, geochemical, and micropaleontological parameters were analyzed to reconstruct paleoenvironmental changes. The records of total organic carbon, diatom abundance, diatom assemblage suggest that warm, stratified and stable condition lasted from 3900 to 2500 yr BP. After that, cooling condition persisted for about 1300 years from 2500 to 1200 yr BP. The onset of Neoglacial in this study is contemporaneous with James Ross Island, Bransfield Basin, and Maxwell Bay. However, the periods of Neoglacial, MWP, LIA are different from the Firth of Tay, although two sites are very close. In this core sediment, about 500 year periodicity of climate cooling is observed since 3000 yr BP. It may be correlative with 550-yr cyclicities in North Atlantic circulation patterns during the Holocene.
URI
http://repository.kopri.re.kr/handle/201206/7100
Conference Name
대한지질학회 추계지질과학 연합학술대회
Conference Place
하이원컨벤션호텔
Conference Date
2014.10.29~2014.12.31
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