https://repository.kopri.re.kr/handle/201206/12730 2026-03-12T06:43:04Z 2026-03-12T06:43:04Z 홍종욱 https://repository.kopri.re.kr/handle/201206/13128 2022-03-24T07:14:50Z 2020-08-31T00:00:00Z

Title: Development of Convergence Micro System for Folding-Refolding Study of Polar Antifreezing Protein Authors: 홍종욱

2020-08-31T00:00:00Z Khim, Boo-Keun Lee, Mi Jung Cho, Hyen Goo Park, Kwangkyu https://repository.kopri.re.kr/handle/201206/13021 2022-03-24T07:15:01Z 2018-05-01T00:00:00Z

Title: Surface water productivity and sediment transport by Bering Strait throughflow in the Chukchi Shelf (the western Arctic Ocean) during the Holocene Authors: Khim, Boo-Keun; Lee, Mi Jung; Cho, Hyen Goo; Park, Kwangkyu Abstract: Diverse 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.

2018-05-01T00:00:00Z Kug, Jong-Seong https://repository.kopri.re.kr/handle/201206/13127 2022-03-24T07:14:49Z 2017-06-30T00:00:00Z

Title: Future Changes of Phytoplankton over the Arctic under greenhouse warming and their climate feedback Authors: Kug, Jong-Seong

2017-06-30T00:00:00Z 김두헌 https://repository.kopri.re.kr/handle/201206/13348 2022-04-22T07:16:38Z 2017-06-28T00:00:00Z

Title: Decomposition of neurodegenerative oligosome usingmicrobial proteases engaged in biofim metabolism of polar microorganisms Authors: 김두헌

2017-06-28T00:00:00Z