| DOI: | 10.1016/j.quascirev.2018.01.008
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| Scopus记录号: | 2-s2.0-85041475832
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| 论文题名: | Glacier extent in sub-Antarctic Kerguelen archipelago from MIS 3 period: Evidence from 36Cl dating |
| 作者: | Jomelli V.; Schimmelpfennig I.; Favier V.; Mokadem F.; Landais A.; Rinterknecht V.; Brunstein D.; Verfaillie D.; Legentil C.; Aumaitre G.; Bourlès D.L.; Keddadouche K.
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| 刊名: | Quaternary Science Reviews
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| ISSN: | 2773791
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| 出版年: | 2018
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| 卷: | 183 | | 起始页码: | 110
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| 结束页码: | 123
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| 语种: | 英语
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| 英文关键词: | 36Cl cosmic-ray exposure dating
; Glacier fluctuations
; Kerguelen
; MIS 2–4
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| Scopus关键词: | Cosmic rays
; Cosmology
; Glacial geology
; Oceanography
; Sensitivity analysis
; Submarine geophysics
; Surface waters
; 36Cl cosmic-ray exposure dating
; Antarctic cold reversals
; Antarctic ice sheets
; Glacier fluctuations
; Kerguelen
; Last Glacial Maximum
; Sea-surface temperature change
; Surface exposure age
; Ice
; cosmic ray
; dating method
; deglaciation
; glacial history
; glacier advance
; glacier dynamics
; glacier retreat
; historical record
; Last Glacial Maximum
; moraine
; offshore application
; paleoclimate
; paleotemperature
; sea surface temperature
; Antarctic Ice Sheet
; Antarctica
; Antarctica
; Atlantic Sector
; French Southern Territories
; Indian Sector
; Kerguelen Islands
; New Zealand
; Pacific Sector
; Patagonia
; Southern Ocean
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| 英文摘要: | Documenting sub-Antarctic glacier variations during the local last glacial maximum is of major interest to better understand their sensitivity to atmospheric and oceanic temperature changes in conjunction with Antarctic ice sheet changes. However, data are sparse because evidence of earlier glacier extents is for most sub-Antarctic islands located offshore making their observation complex. Here, we present 22 cosmogenic 36Cl surface exposure ages obtained from five sites at Kerguelen to document the glacial history. The 36Cl ages from roche moutonnee surfaces, erratics and boulders collected on moraines span from 41.9 ± 4.4 ka to 14.3 ± 1.1 ka. Ice began to retreat on the eastern part of the main island before 41.4 ± 4.4 ka. Slow deglaciation occurred from ∼41 to ∼29 ka. There is no evidence of advances between 29 ka and the Antarctic Cold Reversal (ACR) period (∼14.5–12.9 ka) period. During the ACR, however, the Bontemps and possibly Belvedere moraines were formed by the advance of a Cook Ice Cap outlet glacier and a local glacier on the Presque Ile Jeanne d'Arc, respectively. This glacier evolution differs partly from that of glaciers in New Zealand and in Patagonia. These asynchronous glacier changes in the sub-Antarctic region are however in agreement with sea surface temperature changes recorded around Antarctica, which suggest differences in the climate evolution of the Indo-Pacific and Atlantic sectors of Antarctica. © 2018 |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/112288
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Université Paris 1 Panthéon-Sorbonne, CNRS Laboratoire de Géographie Physique, Meudon, 92195, France; Aix Marseille Univ, CNRS, IRD, Coll France, CEREGE, Aix-en-Provence, France; Univ. Grenoble Alpes, LGGE, Grenoble, CNRS, France; Laboratoire des Sciences du Climat et de l'Environnement – IPSL, UMR8212, CEA-CNRS-UVSQ-UPS, Gif sur Yvette, France; Università di Corsica - Pasquale Paoli, UMR CNRS 6240 LISA, Corte, France; ASTER Team, France
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| Recommended Citation: | |
Jomelli V.,Schimmelpfennig I.,Favier V.,et al. Glacier extent in sub-Antarctic Kerguelen archipelago from MIS 3 period: Evidence from 36Cl dating[J]. Quaternary Science Reviews,2018-01-01,183
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