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| DOI | 10.5194/tc-13-1583-2019 |
| Subglacial hydrological control on flow of an Antarctic Peninsula palaeo-ice stream | |
| Larter R.D.; Hogan K.A.; Hillenbrand C.-D.; Smith J.A.; Batchelor C.L.; Cartigny M.; Tate A.J.; Kirkham J.D.; Roseby Z.A.; Kuhn G.; Graham A.G.C.; Dowdeswell J.A. | |
| 发表日期 | 2019 |
| ISSN | 19940416 |
| EISSN | 13 |
| 起始页码 | 1583 |
| 结束页码 | 1596 |
| 卷号 | 13期号:6 |
| 英文摘要 | Basal hydrological systems play an important role in controlling the dynamic behaviour of ice streams. Data showing their morphology and relationship to geological substrates beneath modern ice streams are, however, sparse and difficult to collect. We present new multibeam bathymetry data that make the Anvers-Hugo Trough west of the Antarctic Peninsula the most completely surveyed palaeo-ice stream pathway in Antarctica. The data reveal a diverse range of landforms, including streamlined features where there was fast flow in the palaeo-ice stream, channels eroded by flow of subglacial water, and compelling evidence of palaeo-ice stream shear margin locations. We interpret landforms as indicating that subglacial water availability played an important role in facilitating ice stream flow and controlling shear margin positions. Water was likely supplied to the ice stream bed episodically as a result of outbursts from a subglacial lake located in the Palmer Deep basin on the inner continental shelf. These interpretations have implications for controls on the onset of fast ice flow, the dynamic behaviour of palaeo-ice streams on the Antarctic continental shelf, and potentially also for behaviour of modern ice streams. © Author(s) 2019. |
| 学科领域 | bathymetry; continental shelf; fluvial landform; hydrological modeling; ice flow; ice stream; paleoenvironment; subglacial environment; Antarctic Peninsula; Antarctica; West Antarctica |
| 语种 | 英语 |
| scopus关键词 | bathymetry; continental shelf; fluvial landform; hydrological modeling; ice flow; ice stream; paleoenvironment; subglacial environment; Antarctic Peninsula; Antarctica; West Antarctica |
| 来源期刊 | The Cryosphere
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/118877 |
| 作者单位 | British Antarctic Survey, Madingley Road, High Cross, Cambridge, CB3 0ET, United Kingdom; Scott Polar Research Institute, University of Cambridge, Lensfield Road, Cambridge, CB2 1ER, United Kingdom; Department of Geography, Durham University, South Road, Durham, DH1 3LE, United Kingdom; Ocean and Earth Science, National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton, SO14 3ZH, United Kingdom; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, 27568, Germany; College of Life and Environmental Sciences, University of Exeter, Rennes Drive, Exeter, EX4 4RJ, United Kingdom |
| 推荐引用方式 GB/T 7714 | Larter R.D.,Hogan K.A.,Hillenbrand C.-D.,et al. Subglacial hydrological control on flow of an Antarctic Peninsula palaeo-ice stream[J],2019,13(6). |
| APA | Larter R.D..,Hogan K.A..,Hillenbrand C.-D..,Smith J.A..,Batchelor C.L..,...&Dowdeswell J.A..(2019).Subglacial hydrological control on flow of an Antarctic Peninsula palaeo-ice stream.The Cryosphere,13(6). |
| MLA | Larter R.D.,et al."Subglacial hydrological control on flow of an Antarctic Peninsula palaeo-ice stream".The Cryosphere 13.6(2019). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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