| DOI: | 10.1002/2014GL062494
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| 论文题名: | Effect of near-terminus subglacial hydrology on tidewater glacier submarine melt rates |
| 作者: | Slater D.A.; Nienow P.W.; Cowton T.R.; Goldberg D.N.; Sole A.J.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8754
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| EISSN: | 1944-8485
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| 出版年: | 2015
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| 卷: | 42, 期:8 | | 起始页码: | 2861
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| 结束页码: | 2868
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| 语种: | 英语
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| 英文关键词: | greenland ice sheet
; ice-ocean interactions
; modeling
; subglacial hydrology
; submarine melting
; tidewater glaciers
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| Scopus关键词: | Hydrology
; Melting
; Models
; Spatial distribution
; Submarines
; Distributed systems
; General circulation model
; Greenland Ice Sheet
; Ice-ocean interactions
; Possible mechanisms
; Subglacial hydrology
; Tidewater glaciers
; Water circulation
; Glacial geology
; glacial hydrology
; ice retreat
; meltwater
; spatial distribution
; subglacial environment
; tidewater glacier
; Arctic
; Greenland
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| 英文摘要: | Submarine melting of Greenlandic tidewater glacier termini is proposed as a possible mechanism driving their recent thinning and retreat. We use a general circulation model, MITgcm, to simulate water circulation driven by subglacial discharge at the terminus of an idealized tidewater glacier. We vary the spatial distribution of subglacial discharge emerging at the grounding line of the glacier and examine the effect on submarine melt volume and distribution. We find that subglacial hydrology exerts an important control on submarine melting; under certain conditions a distributed system can induce a factor 5 more melt than a channelized system, with plumes from a single channel inducing melt over only a localized area. Subglacial hydrology also controls the spatial distribution of melt, which has the potential to control terminus morphology and calving style. Our results highlight the need to constrain near-terminus subglacial hydrology at tidewater glaciers if we are to represent ocean forcing accurately. ©2015. The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929508941&doi=10.1002%2f2014GL062494&partnerID=40&md5=ead919e360f394e83f1c94f1c62e9656
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8370
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom
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| Recommended Citation: | |
Slater D.A.,Nienow P.W.,Cowton T.R.,et al. Effect of near-terminus subglacial hydrology on tidewater glacier submarine melt rates[J]. Geophysical Research Letters,2015-01-01,42(8).
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