Massive collapse of two glaciers in western Tibet in 2016 after surge-like instability
文献类型：期刊论文
| 作者 | Kaab, A (Kaab, Andreas)2; Leinss, S (Leinss, Silvan)1; Gilbert, A (Gilbert, Adrien)2; Buhler, Y (Buhler, Yves)3; Gascoin, S (Gascoin, Simon)4; Evans, SG (Evans, Stephen G.)5; Bartelt, P (Bartelt, Perry)3; Berthier, E (Berthier, Etienne)6; Brun, F (Brun, Fanny)6,7; Chao, WA (Chao, Wei-An)8 |
| 刊名 | NATURE GEOSCIENCE
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 11期号:2页码:114-120 |
| 关键词 | KUNLUN SHAN BALANCE FLOW MECHANISM AVALANCHE DYNAMICS PLATEAU REGION MODEL EARTHQUAKES |
| ISSN号 | 1752-0894 |
| DOI | 10.1038/s41561-017-0039-7 |
| 英文摘要 | Surges and glacier avalanches are expressions of glacier instability, and among the most dramatic phenomena in the mountain cryosphere. Until now, the catastrophic collapse of a glacier, combining the large volume of surges and mobility of ice avalanches, has been reported only for the 2002 130 x 10(6) m(3) detachment of Kolka Glacier (Caucasus Mountains), which has been considered a globally singular event. Here, we report on the similar detachment of the entire lower parts of two adjacent glaciers in western Tibet in July and September 2016, leading to an unprecedented pair of giant low-angle ice avalanches with volumes of 68 +/- 2 x 10(6) m(3) and 83 +/- 2 x 10(6) m(3). On the basis of satellite remote sensing, numerical modelling and field investigations, we find that the twin collapses were caused by climate-and weather-driven external forcing, acting on specific polythermal and soft-bed glacier properties. These factors converged to produce surge-like enhancement of driving stresses and massively reduced basal friction connected to subglacial water and fine-grained bed lithology, to eventually exceed collapse thresholds in resisting forces of the tongues frozen to their bed. Our findings show that large catastrophic instabilities of low-angle glaciers can happen under rare circumstances without historical precedent. |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000423843600009 |
| 出版者 | NATURE PUBLISHING GROUP |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/8748]  |
| 专题 | 青藏高原研究所_图书馆 |
| 作者单位 | 1.ETH, Inst Environm Engn, Zurich, Switzerland; 2.Univ Oslo, Dept Geosci, Oslo, Norway; 3.WSL Inst Snow & Avalanche Res SLF, Davos, Switzerland; 4.Univ Toulouse, CNRS, CESBIO, CNES,IRD,UPS, Toulouse, France; 5.[Evans, Stephen G.] Univ Waterloo, Dept Earth & Environm Sci, Waterloo, ON, Canada; 6.Univ Toulouse, CNRS, LEGOS, CNES,IRD,UPS, Toulouse, France; 7.Univ Grenoble Alpes, IRD, CNRS, Grenoble INP,IGE, Grenoble, France; 8.Natl Chiao Tung Univ, Dept Civil Engn, Hsinchu, Taiwan; 9.ETH, Lab Hydraul Hydrol & Glaciol, Zurich, Switzerland; 10.Swiss Fed Inst Forest Snow & Landscape Res WSL, Birmensdorf, Switzerland; |
| 推荐引用方式 GB/T 7714 | Kaab, A ,Leinss, S ,Gilbert, A ,et al. Massive collapse of two glaciers in western Tibet in 2016 after surge-like instability[J]. NATURE GEOSCIENCE,2018,11(2):114-120. |
| APA | Kaab, A .,Leinss, S .,Gilbert, A .,Buhler, Y .,Gascoin, S .,...&Yao, TD .(2018).Massive collapse of two glaciers in western Tibet in 2016 after surge-like instability.NATURE GEOSCIENCE,11(2),114-120. |
| MLA | Kaab, A ,et al."Massive collapse of two glaciers in western Tibet in 2016 after surge-like instability".NATURE GEOSCIENCE 11.2(2018):114-120. |
入库方式： OAI收割
来源：青藏高原研究所
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