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| DOI | 10.1016/j.earscirev.2020.103152 |
| The evolution of the Patagonian Ice Sheet from 35 ka to the present day (PATICE) | |
| Davies B.J.; Darvill C.M.; Lovell H.; Bendle J.M.; Dowdeswell J.A.; Fabel D.; García J.-L.; Geiger A.; Glasser N.F.; Gheorghiu D.M.; Harrison S.; Hein A.S.; Kaplan M.R.; Martin J.R.V.; Mendelova M.; Palmer A.; Pelto M.; Rodés Á.; Sagredo E.A.; Smedley R.K.; Smellie J.L.; Thorndycraft V.R. | |
| 发表日期 | 2020 |
| ISSN | 0012-8708 |
| 卷号 | 204 |
| 英文摘要 | We present PATICE, a GIS database of Patagonian glacial geomorphology and recalibrated chronological data. PATICE includes 58,823 landforms and 1,669 geochronological ages, and extends from 38°S to 55°S in southern South America. We use these data to generate new empirical reconstructions of the Patagonian Ice Sheet (PIS) and subsequent ice masses and ice-dammed palaeolakes at 35 ka, 30 ka, 25 ka, 20 ka, 15 ka, 13 ka (synchronous with the Antarctic Cold Reversal), 10 ka, 5 ka, 0.2 ka and 2011 AD. At 35 ka, the PIS covered of 492.6 x103 km2, had a sea level equivalent of ~1,496 mm, was 350 km wide and 2090 km long, and was grounded on the Pacific continental shelf edge. Outlet glacier lobes remained topographically confined and the largest generated the suites of subglacial streamlined bedforms characteristic of ice streams. The PIS reached its maximum extent by 33 – 28 ka from 38°S to 48°S, and earlier, around 47 ka from 48°S southwards. Net retreat from maximum positions began by 25 ka, with ice-marginal stabilisation then at 21 – 18 ka, which was then followed by rapid, irreversible deglaciation. By 15 ka, the PIS had separated into disparate ice masses, draining into large ice-dammed lakes along the eastern margin, which strongly influenced rates of recession. Glacial readvances or stabilisations occurred at least at 14 – 13 ka, 11 ka, 6 – 5 ka, 2 – 1 ka, and 0.5 – 0.2 ka. We suggest that 20th century glacial recession (% a-1) is occurring faster than at any time documented during the Holocene. © 2020 The Authors |
| 英文关键词 | Geochronology; Geomorphology; Glaciation; Ice Sheet; Patagonia; Quaternary |
| 语种 | 英语 |
| scopus关键词 | continental shelf; geochronology; geomorphology; glacial landform; glacier advance; Holocene; ice sheet; ice stream; ice-dammed lake; reconstruction; Pacific Ocean; Patagonia |
| 来源期刊 | EARTH-SCIENCE REVIEWS
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/209637 |
| 作者单位 | Centre for Quaternary Research, Department of Geography, Royal Holloway University of London, Egham Hill, Egham, Surrey, TW20 0EX, United Kingdom; Department of Geography, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom; School of the Environment, Geography and Geosciences, University of Portsmouth, Buckingham Building, Lion Terrace, Portsmouth, PO1 3HE, United Kingdom; Scott Polar Research Institute, University of Cambridge, Cambridge, CB2 1ER, United Kingdom; Scottish Universities Environmental Research Centre (SUERC), Rankine Avenue, East Kilbride, G75 0QF, United Kingdom; Instituto de Geografía, Facultad de Historia, Geografía y Ciencia Política, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, 782-0436, Chile; Department of Geography and Earth Sciences, Aberystwyth University, Wales, SY23 3DB, United Kingdom; College of Life and Environmental Sciences, University of Exeter, Cornwall Campus, Penryn, TR10 9EZ, United Kingdom; School... |
| 推荐引用方式 GB/T 7714 | Davies B.J.,Darvill C.M.,Lovell H.,et al. The evolution of the Patagonian Ice Sheet from 35 ka to the present day (PATICE)[J],2020,204. |
| APA | Davies B.J..,Darvill C.M..,Lovell H..,Bendle J.M..,Dowdeswell J.A..,...&Thorndycraft V.R..(2020).The evolution of the Patagonian Ice Sheet from 35 ka to the present day (PATICE).EARTH-SCIENCE REVIEWS,204. |
| MLA | Davies B.J.,et al."The evolution of the Patagonian Ice Sheet from 35 ka to the present day (PATICE)".EARTH-SCIENCE REVIEWS 204(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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