Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-018-0082-z |
Net retreat of Antarctic glacier grounding lines | |
Konrad, Hannes1,2; Shepherd, Andrew1; Gilbert, Lin3; Hogg, Anna E.1; McMillan, Malcolm1; Muir, Alan3; Slater, Thomas1 | |
2018-04-01 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2018 |
卷号 | 11期号:4页码:258-+ |
文章类型 | Article |
语种 | 英语 |
国家 | England; Germany |
英文摘要 | Grounding lines are a key indicator of ice-sheet instability, because changes in their position reflect imbalance with the surrounding ocean and affect the flow of inland ice. Although the grounding lines of several Antarctic glaciers have retreated rapidly due to ocean-driven melting, records are too scarce to assess the scale of the imbalance. Here, we combine satellite altimeter observations of ice-elevation change and measurements of ice geometry to track grounding-line movement around the entire continent, tripling the coverage of previous surveys. Between 2010 and 2016, 22%, 3% and 10% of surveyed grounding lines in West Antarctica, East Antarctica and at the Antarctic Peninsula retreated at rates faster than 25 m yr(-1) (the typical pace since the Last Glacial Maximum) and the continent has lost 1,463 km(2) +/- 791 km(2) of grounded-ice area. Although by far the fastest rates of retreat occurred in the Amundsen Sea sector, we show that the Pine Island Glacier grounding line has stabilized, probably as a consequence of abated ocean forcing. On average, Antarctica's fast-flowing ice streams retreat by 110 metres per metre of ice thinning. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000429131600017 |
WOS关键词 | PINE ISLAND GLACIER ; WEST ANTARCTICA ; RADAR INTERFEROMETRY ; KOHLER GLACIERS ; AMUNDSEN SEA ; ICE ; THICKNESS ; COLLAPSE ; THWAITES ; BENEATH |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34756 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Leeds, Ctr Polar Observat & Modelling, Leeds, W Yorkshire, England; 2.Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, Bremerhaven, Germany; 3.UCL, Ctr Polar Observat & Modelling, London, England |
推荐引用方式 GB/T 7714 | Konrad, Hannes,Shepherd, Andrew,Gilbert, Lin,et al. Net retreat of Antarctic glacier grounding lines[J]. NATURE GEOSCIENCE,2018,11(4):258-+. |
APA | Konrad, Hannes.,Shepherd, Andrew.,Gilbert, Lin.,Hogg, Anna E..,McMillan, Malcolm.,...&Slater, Thomas.(2018).Net retreat of Antarctic glacier grounding lines.NATURE GEOSCIENCE,11(4),258-+. |
MLA | Konrad, Hannes,et al."Net retreat of Antarctic glacier grounding lines".NATURE GEOSCIENCE 11.4(2018):258-+. |
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