Diatom assemblages from core sediments in the western sea area of the South Orkney Islands, Antarctica
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- Diatom assemblages from core sediments in the western sea area of the South Orkney Islands, Antarctica
- Other Titles
- 남극 사우스 오크니 제도 서부 해역의 코어 퇴적물에서 산출된 규조 군집
- Lee, Jong-Deock
Lee, Jae Il
Yoon, Ho Il
- South Orkney Islands; diatom assemblage zone; sea-ice species; open water speciesUniversity; Jeonju; 561-756; Korea; Ho Il Yon and Jae Il Lee; Korea Polar Research Institute; Songdo Techno Park; 7-50 Songdo-dong; Yeonsu-gu; Incheon 406-840; Korea)
- Issue Date
- Lee, Jong-Deock, et al. 2007. "Diatom assemblages from core sediments in the western sea area of the South Orkney Islands, Antarctica". The Geological Society Of Korea, 43(1): 33-42.
- Holocene paleoenvironmental history in the western South Orkney Islands was reconstructedthrough the paleoecological analysis on the diatom taxa from sediment core GC02-SOI03. Thre diatom zones are identified on the basis of frequency of the critical taxa throughout the section: diatom assemblage zone I (533 cm∼360 cm), diatom assemblage zone II (352 cm∼240 cm), and diatom assemblage zone III (232 cm∼0 cm). High concentration of open water species and Eucampia antarctica var. antarctica in the diatom assemblage zone I indicates open water environment with little sea-ice during the early Holocene. Sea-ice species and Eucampia antarctica var. recta increase in abundance in the diatom assemblage zone II, suggesting increased sea-ice cover in the study area since 5 ka. Even more extensive sea-ice coverage during the late Holocene is implied by abundant sea-ice species and decreased Corethron criophilum in the diatom assemblage zone III.
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