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| DOI | 10.1126/science.aaz3059 |
| Delicate seafloor landforms reveal past Antarctic grounding-line retreat of kilometers per year | |
| Dowdeswell J.A.; Batchelor C.L.; Montelli A.; Ottesen D.; Christie F.D.W.; Dowdeswell E.K.; Evans J. | |
| 发表日期 | 2020 |
| ISSN | 0036-8075 |
| 起始页码 | 1020 |
| 结束页码 | 1024 |
| 卷号 | 368期号:6494 |
| 英文摘要 | A suite of grounding-line landforms on the Antarctic seafloor, imaged at submeter horizontal resolution from an autonomous underwater vehicle, enables calculation of ice sheet retreat rates from a complex of grounding-zone wedges on the Larsen continental shelf, western Weddell Sea. The landforms are delicate sets of up to 90 ridges, <1.5 meters high and spaced 20 to 25 meters apart. We interpret these ridges as the product of squeezing up of soft sediment during the rise and fall of the retreating ice sheet grounding line during successive tidal cycles. Grounding-line retreat rates of 40 to 50 meters per day (>10 kilometers per year) are inferred during regional deglaciation of the Larsen shelf. If repeated today, such rapid mass loss to the ocean would have clear implications for increasing the rate of global sea level rise. © 2020 American Association for the Advancement of Science. All rights reserved. |
| 关键词 | deglaciationglacial landformglacier retreatglobal oceangrounding linelandformseafloortidal cycleAntarcticaLarsen Ice ShelfSouthern OceanWeddell SeaWest AntarcticaAntarcticaarticlebody weightcalculationcontinental shelfdeglaciationice sheetsea level risesedimentWeddell Sea |
| 语种 | 英语 |
| 来源机构 | Science |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/133461 |
| 推荐引用方式 GB/T 7714 | Dowdeswell J.A.,Batchelor C.L.,Montelli A.,et al. Delicate seafloor landforms reveal past Antarctic grounding-line retreat of kilometers per year[J]. Science,2020,368(6494). |
| APA | Dowdeswell J.A..,Batchelor C.L..,Montelli A..,Ottesen D..,Christie F.D.W..,...&Evans J..(2020).Delicate seafloor landforms reveal past Antarctic grounding-line retreat of kilometers per year.,368(6494). |
| MLA | Dowdeswell J.A.,et al."Delicate seafloor landforms reveal past Antarctic grounding-line retreat of kilometers per year".368.6494(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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