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Terrestrial and aquatic palynomorphs in Holocene sediments from the Chukchi?Alaskan margin, western Arctic Ocean: Implications for the history of marine circulation and climatic environments

Cited 3 time in wos
Cited 3 time in scopus
Title
Terrestrial and aquatic palynomorphs in Holocene sediments from the Chukchi?Alaskan margin, western Arctic Ocean: Implications for the history of marine circulation and climatic environments
Other Titles
서북극해 척치-알라스카 대륙붕의 홀로세 퇴적물에 기록된 육생-수생 유기질미화석 연구: 해양순환 및 기후환경 변화 역사적 의미
Authors
Kim, Sun Young
Irina Delusina
Leonid Polyak
Subject
Physical GeographyGeology
Keywords
Chukchi SeaHolocenepalynomorphspollensediment coreswestern Arctic
Issue Date
2017
Citation
Kim, Sun Young, Irina Delusina, Leonid Polyak. 2017. "Terrestrial and aquatic palynomorphs in Holocene sediments from the Chukchi?Alaskan margin, western Arctic Ocean: Implications for the history of marine circulation and climatic environments". HOLOCENE, 27: 976-986.
Abstract
Two sediment cores from the Chukchi Sea margin north of Alaska were analyzed for palynological composition including terrestrial and aquatic palynomorphs. Based on 13 radiocarbon ages the investigated sedimentary record represents most of the Holocene with a century to multi-decadal age resolution. Three palynological zones were discriminated based on the abundance of major palynomorph groups (terrestrial and freshwater palynomorphs and dinoflagellate cysts) and composition of spore and pollen assemblages. They are interpreted in terms of depositional and paleoclimatic changes including predominance of redeposition by meltwater or sea ice in the early Holocene, a strong input of contemporaneous material related to Pacific water advection culminating after ca. 6,000 yr BP, and more subtle changes in the late Holocene. It is concluded that depositional environments, such as current transportation and mixing, have an overall major control on palynomorph distribution. The climatic factors may have also played important role in palynomorph abundance and composition, especially in the middle to late Holocene, when circulation changes were less dramatic than during the flooding of the Bering Strait and the shallow Chukchi Sea shelf. Comprehending these linkages requires a better knowledge of the Holocene vegetation history in the coastal areas of Alaska and Chukchi Peninsula.
URI
https://repository.kopri.re.kr/handle/201206/5597
DOI
http://dx.doi.org/10.1177/0959683616678459
Type
Article
Indexed
SCI
Appears in Collections  
2014-2016, Characteristics of gas hydrate and reconstruction of paleo-environment changes in the western Arctic (14-16) / Nam, Seung-Il (PE14062; PE15062; PE16062)
2016-2018, Korea-Arctic Ocean Observing System(K-AOOS) (16-18) / Kang, Sung-Ho (PM16040; PM17040)
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