A 350-year multiproxy record of climate-driven environmental shifts in the Amundsen Sea Polynya, Antarctica SCIE SCOPUS

DC Field Value Language
dc.contributor.author Kim, So-Young -
dc.contributor.author Lim, Dhongil -
dc.contributor.author Rebolledo, Lorena -
dc.contributor.author Park, Taewook -
dc.contributor.author Esper, Oliver -
dc.contributor.author Muñoz, Práxedes -
dc.contributor.author La, Hyoung Sul -
dc.contributor.author Kim, Tae Wan -
dc.contributor.author Lee, SangHoon -
dc.date.accessioned 2021-08-26T05:50:00Z -
dc.date.available 2021-08-26T05:50:00Z -
dc.date.created 2021-08-26 -
dc.date.issued 2021-10 -
dc.identifier.issn 0921-8181 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/41591 -
dc.description.abstract With a growing concern over rapid Antarctic ice loss in recent years, the Amundsen Sea, one of the fastest-melting areas in Antarctica, currently becomes a hotspot for the Earth sciences in the context of its linkage to global climate. As a center of strong physical and biological coupling processes, polynyas of the Amundsen Sea could act as sentinels of changes in atmosphere–ice–ocean interactions, offering a unique perspective into its sensitivity to climate variability. Here, we present a new, multiproxy-based high-resolution sedimentary record from the Amundsen Sea polynya, which provides new insights into environmental conditions of the region over the last 350 years and their linkages to climatic factors. Our results show that the polynya witnessed step-wise environmental shifts in parallel with the phases and strength of large-scale climate patterns, i.e., the Southern Annular Mode (SAM) and El Niño–Southern Oscillation (ENSO). Notably, intersite correlation of on-shelf Circumpolar Deep Water (CDW) intrusion signals at different locals suggests that the CDW may have gained increased access to the shelves at the time of a strong coupling of positive SAM and El Niño states. We tentatively speculate that anomalous large-scale atmospheric and oceanic circulation patterns over the Southern Hemisphere, forced by increasing greenhouse gas levels, were strongly involved in the mid-20th century CDW invigoration, which may be greater in scale that goes well beyond the Amundsen Sea region. This result is relevant to the current debate on spatial heterogeneity in the timing and phasing of major climatic events in Antarctica, underscoring an unambiguous connection of the Antarctic climate state to the large-scale ocean–atmosphere reorganizations. Our study also extends a growing evidence that today's global warming trend is expected to have a severe effect on future configuration of Antarctic continental ice-shelf environment. -
dc.description.uri 1 -
dc.language English -
dc.publisher Elsevier BV -
dc.subject MELTING GLACIERS FUELS -
dc.subject SOUTHERN ANNULAR MODE -
dc.subject ICE-SHEET RETREAT -
dc.subject WEST ANTARCTICA -
dc.subject PINE ISLAND -
dc.subject PHYTOPLANKTON BLOOMS -
dc.subject SURFACE SEDIMENTS -
dc.subject PB-210 GEOCHRONOLOGY -
dc.subject MARINE PRODUCTIVITY -
dc.subject BRANSFIELD STRAIT -
dc.title A 350-year multiproxy record of climate-driven environmental shifts in the Amundsen Sea Polynya, Antarctica -
dc.type Article -
dc.citation.title GLOBAL AND PLANETARY CHANGE -
dc.citation.volume 205 -
dc.contributor.alternativeName 임동일 -
dc.identifier.bibliographicCitation GLOBAL AND PLANETARY CHANGE, v.205 -
dc.identifier.doi 10.1016/j.gloplacha.2021.103589 -
dc.identifier.scopusid 2-s2.0-85113291424 -
dc.identifier.wosid 000694744000002 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.description.isOpenAccess N -
dc.subject.keywordPlus MELTING GLACIERS FUELS -
dc.subject.keywordPlus SOUTHERN ANNULAR MODE -
dc.subject.keywordPlus ICE-SHEET RETREAT -
dc.subject.keywordPlus WEST ANTARCTICA -
dc.subject.keywordPlus PINE ISLAND -
dc.subject.keywordPlus PHYTOPLANKTON BLOOMS -
dc.subject.keywordPlus SURFACE SEDIMENTS -
dc.subject.keywordPlus PB-210 GEOCHRONOLOGY -
dc.subject.keywordPlus MARINE PRODUCTIVITY -
dc.subject.keywordPlus BRANSFIELD STRAIT -
dc.subject.keywordAuthor Amundsen Sea Polynya -
dc.subject.keywordAuthor Sediment -
dc.subject.keywordAuthor Circumpolar Deep Water -
dc.subject.keywordAuthor Atmospheric circulation -
dc.relation.journalWebOfScienceCategory Geography, Physical -
dc.relation.journalWebOfScienceCategory Geosciences, Multidisciplinary -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Physical Geography -
dc.relation.journalResearchArea Geology -
Appears in Collections:
South Sea Research Institute > Library of Marine Samples > 1. Journal Articles
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