DSpace Collection: https://repository.kopri.re.kr/handle/201206/5484 2026-04-16T01:18:40Z Paleoclimatic Implications of Palynoflora from the Quaternary Sediments at Seogwipo, Jeju Island, Korea https://repository.kopri.re.kr/handle/201206/5949 Title: Paleoclimatic Implications of Palynoflora from the Quaternary Sediments at Seogwipo, Jeju Island, Korea Authors: Lee, Seung Hyoun; Yoon, Ho Il; Chung, Chull Hwan Abstract: Palynoflora from a core (BH-4) drilled on the Quaternary sediments in the vicinity of Seogwipo, Jeju Island,provide an unusual opportunity to reveal vegetational transition from the last glacial to the Holocene in Korea. It consistsmainly of ferns, deciduous broad-leaved angiosperms, and herbs, and is represented by Polypodiaceae, Gramineae,Castanea/Castanopsis, Quercus and Compositae. A distinct vegetational change is observed at a core depth of 200 cm.The interval of 30 to 190 cm in depth yields mainly arboreal pollen and warm temperate taxa such as Polypodiaceae,Ceratopteris, and Taxodiaceae - Cupressaceae - Taxaceae, whereas the interval of 200 to 800 cm is dominated byherbaceous pollen and a decrease of warm temperate taxa, reflecting the influence of cold climate. This palynofloralclimatic signature closely corresponds to paleoclimate proxy records such as magnetic susceptibility. 2004-01-01T00:00:00Z Wind- and Rain-induced Variations of Water Column Structures and Dispersal Pattern of Suspended articulate Matter (SPM) in Marian Cove, the South Shetland Islands, West Antarctica during the Austral Summer 2000 https://repository.kopri.re.kr/handle/201206/5972 Title: Wind- and Rain-induced Variations of Water Column Structures and Dispersal Pattern of Suspended articulate Matter (SPM) in Marian Cove, the South Shetland Islands, West Antarctica during the Austral Summer 2000 Authors: OH, JAE KYUNG; Kim, Yeadong; Bae, Sung-Ho; Kang, Cheon Yoon; Yoon, Ho Il; Yoo, Kyu-Cheul Abstract: 남극 세종기지 앞에 위치한 마리안 소만의 여름 수층 구조과 부유물질 분산기작을 이해하기 위해 빙벽 앞에서 CTDT 연속측정을 하였으며, 측정기간 동안의 조석, 부유물질농도, 유속, 그리고 기상요인도 함께 분석되었다. 45 시간동안 1시간 간격으로 측정된 연속 수층 특성 2003-01-01T00:00:00Z Paleoenvironmental research of the Antarctic Core Sediment from the Antarctic Polar Front in Drake Passage, based on Diatom assemblage https://repository.kopri.re.kr/handle/201206/5957 Title: Paleoenvironmental research of the Antarctic Core Sediment from the Antarctic Polar Front in Drake Passage, based on Diatom assemblage Authors: Lee, Jong-Deock; Bak, Young-Suk; YUN, HYE SU; Yoon, Ho Il Abstract: 56 diatom species belonging to 21 genera were identified from the core DP00-02, drilled in Drake Passage. Actinocyclus actinochilus, Fragilariopsis kerguelensis, Thalassiosira rentiginosa and Thalassiothrix longissima are the dominant species (56% of the total assemblage) in DP00-02 core sediments. The abundance pattern of diatom assemblages and paleoindicator species at the horizon of 144 ㎝ suggests the position of Antarctic Polar Front migrated to the south of the modern site. Above this horizon, we believe that there is little effect by the sea-ice even in the glacial periods. The presence of neritic species (Stephanopyxis spp, Odontella weisflogii and Cocconeis costata) and reworked species (Dentculopsis hustedtii, D. dimorpha, Fragilariopsis aurica and Thalassiosira striata) due to strong current activity, i.e. Circumpolar Deep Water and Antarctic Bottom Current. 2003-01-01T00:00:00Z