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자료유형
학술저널
저자정보
Shin, Im-Chul (Meteorological Research Institute, Korea Meteorological Administration) Yi, Hi-Il (Korea Ocean Research and Development Institute, Paleoceanographic Environmental Research Center) Chung, Hyo-Sang (Meteorological Research Institute, Korea Meteorological Administration) Kwon, Won-Tae (Meteorological Research Institute, Korea Meteorological Administration) Chun, Jong-Hwa (Korea Ocean Research and Development Institute, Paleoceanographic Environmental Research Center) Oh, Hyun-Taek (Meteorological Research Institute, Korea Meteorological Administration)
저널정보
한국제4기학회 제4기학회지 제4기학회지 제17권 제2호
발행연도
2003.1
수록면
1 - 7 (7page)

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초록· 키워드

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Environmental changes caused by the abrupt climatic change are one of the important issues in the scientific community. In the East Sea, abrupt climatic shift, called Younger Dryas, is identified. The age of the Younger Dryas cold episode occurred at 11.2 ka. Overall, changes in circulation and bottom water conditions occurred during the Younger Dryas cold episode in the study area. Especially, climatic transition from meltwater spike to the Younger Dryas cold episode is characterized by significant shifts of oxygen isotope values, the coiling ratios of Neogloboquadrina pachyderma, and the planktonic foraminifers abundances. The impact of abrupt climate change on the ecosystem is very significant. In the East Sea, the calcium carbonate secreting organism(foraminifers) is replaced by silicon dioxide secreting organisms(diatom, radiolarian) after the abrupt and severe cold climatic event. Based on the Doctrine of Uniformitarianism, at least climate change for the next 100 years would be severely influence on the marine ecosystem.

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