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Post-LGM dynamic deglaciation along the Victoria Land coast, Antarctica

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dc.contributor.authorRhee, Hyun Hee-
dc.contributor.authorLee, Min Kyung-
dc.contributor.authorSeong, Yeong Bae-
dc.contributor.authorLee, Jae Il-
dc.contributor.authorYoo, Kyu-Cheul-
dc.contributor.authorYu, Byung Yong-
dc.date.accessioned2021-04-30T06:32:32Z-
dc.date.available2021-04-30T06:32:32Z-
dc.date.issued2020-11-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/11793-
dc.description.abstractThe post-Last Glacial Maximum (LGM) deglaciation of Antarctica holds important clues for understanding past environmental changes and predicting future changes in the Antarctic Ice Sheet. Cosmogenic nuclide exposure dating of glacial erratics documents the spatial and temporal glacier changes during the most recent deglaciation. We collected 55 erratic cobbles from the eight glaciated benches on Inexpressible Island, which is at the terminal area of Priestley Glacier, Terra Nova Bay, Victoria Land, to elucidate its post-LGM deglaciation pattern. Analyses of the 10Be ages and 26Al/10Be ratios suggest that Priestley Glacier underwent ~254 m of lowering during the mid-Holocene, between 8.9 and 5.9 ka. This lowering rate (~0.09 m a 1) is faster than those observed along other Victoria Land outlet glaciers to the north (Tucker and Aviator), but slower than the one to the south (Mackay). The post-LGM lowering of these outlet glaciers was triggered by marine ice sheet instability, with their asynchronous onsets of deglaciation derived from their diachronous response times to the southwestward migration of the grounding-line retreat until their synchronous termination of deglaciation at ~6 ka. A post-LGM deglaciation model with the southwestward migration of the western Ross Ice Shelf grounding line provides the best match to the terrestrial exposure dating results of the thinning patterns of the outlet glaciers along the Victoria Land coast.en_US
dc.languageEnglishen_US
dc.language.isoen_USen_US
dc.subjectPhysical Geographyen_US
dc.subjectGeologyen_US
dc.subject.classificationJang Bogo Stationen_US
dc.titlePost-LGM dynamic deglaciation along the Victoria Land coast, Antarcticaen_US
dc.title.alternative남극 빅토리아랜드의 마지막최대빙하기 이후의 해빙 역사en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationRhee, Hyun Hee, et al. 2020. "Post-LGM dynamic deglaciation along the Victoria Land coast, Antarctica". <em>QUATERNARY SCIENCE REVIEWS</em>, 247(1): 106595-10659.en_US
dc.citation.titleQUATERNARY SCIENCE REVIEWSen_US
dc.citation.volume247en_US
dc.citation.number1en_US
dc.identifier.doi10.1016/j.quascirev.2020.106595-
dc.citation.startPage106595en_US
dc.citation.endPage10659en_US
dc.description.articleClassificationSCI-
dc.description.jcrRateJCR 2018:6.633en_US
dc.subject.keywordAntarcticaen_US
dc.subject.keywordTerra Nova bayen_US
dc.subject.keywordInexpressible islanden_US
dc.subject.keywordDeglaciationen_US
dc.subject.keywordCosmogenic exposure datingen_US
dc.subject.keywordRoss ice shelfen_US
dc.identifier.localId2020-0271-
dc.identifier.scopusid2-s2.0-85091555944-
dc.identifier.wosid000581521700019-
Appears in Collections  
2020-2020, Ice sheet retreat and ocean circulation in West Antarctica during the past warm periods (20-20) / Yoo, Kyu-Cheul (PE20180)
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