Benthic foraminifera in the Nakdong River Delta (southeast Korea) and their response to middle Holocene climatic change in the coastal environment of the East Asian margin SCIE SCOPUS

DC Field Value Language Takata, Hiroyuki - Irino, Tomohisa - Katsuki, Kota - Woo, Han Jun - Lee, Jun Ho - Lim, Hyoun Soo - Ha, Sangbeom - Khim, Boo-Keun - 2022-05-30T01:50:05Z - 2022-05-30T01:50:05Z - 2022-05-26 - 2022-08 -
dc.identifier.issn 1367-9120 -
dc.identifier.uri -
dc.description.abstract Fossil benthic foraminifera from five cores in the Nakdong River Delta (southeast Korea) were investigated to reveal paleoenvironmental changes across the middle/late Holocene transition, particularly focusing on ∼4 ka climatic event. Based on multi-dimensional scaling, benthic foraminifera are divided into (1) Marine taxa, (2) Bay taxa, and (3) Opportunistic taxa. Planktonic/total (benthic and planktonic) foraminiferal ratio decreased abruptly during 4.6–3.3 ka, and Nonionella stella was found commonly across ∼4 ka in core ND-01 (intermediate site among the five cores). These results imply that the ∼4 ka climatic event led to the stratification of less saline epilimnetic water underlain by more saline oxygen-poor hypolimnetic water in the Nakdong River Delta. This indicates temporal increase in precipitation in the Nakdong River drainage, which can be attributed to the intensified rainfall with the second Changma peak, associated with typhoons toward the Korean Peninsula. The small twin maxima of N. stella across ∼4 ka in core ND-01 were similar to those of the total sulfur contents in both Yeja Bay (southern Korea) and Lake Togo-ike (southwestern Japan). Such similarity in the stratigraphic patterns among the remote locations can be explained by the small-scale sea-level variations with the fluctuation of the Tsushima Warm Current, in addition to changes in precipitation. The common species of Haynesina sp. A was replaced by Elphidium somaense after ∼4.6 ka, which is likely due to the shift of passive dispersal as a result of the enhanced East Asian winter monsoon and/or the change in the westerly jet path. -
dc.description.uri 1 -
dc.language English -
dc.publisher Pergamon Press Ltd. -
dc.title Benthic foraminifera in the Nakdong River Delta (southeast Korea) and their response to middle Holocene climatic change in the coastal environment of the East Asian margin -
dc.type Article -
dc.citation.title Journal of Asian Earth Sciences -
dc.citation.volume 234 -
dc.contributor.alternativeName 우한준 -
dc.contributor.alternativeName 이준호 -
dc.identifier.bibliographicCitation Journal of Asian Earth Sciences, v.234 -
dc.identifier.doi 10.1016/j.jseaes.2022.105273 -
dc.identifier.scopusid 2-s2.0-85131038787 -
dc.identifier.wosid 000809935200004 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.description.isOpenAccess N -
dc.subject.keywordPlus JAPAN SEA -
dc.subject.keywordPlus SUMMER -
dc.subject.keywordPlus SEDIMENTS -
dc.subject.keywordPlus MIDHOLOCENE -
dc.subject.keywordPlus MONSOONS -
dc.subject.keywordPlus REGION -
dc.subject.keywordPlus OCEAN -
dc.subject.keywordPlus PLAIN -
dc.subject.keywordAuthor Faunal analysis -
dc.subject.keywordAuthor 4 ka climatic event -
dc.subject.keywordAuthor Precipitation -
dc.subject.keywordAuthor Tsushima Warm Current -
dc.subject.keywordAuthor Second Changma -
dc.relation.journalWebOfScienceCategory Geosciences, Multidisciplinary -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Geology -
Appears in Collections:
Marine Domain Management Research Division > Korean Seas Geosystem Research Unit > 1. Journal Articles
Files in This Item:
There are no files associated with this item.


Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.