| DOI: | 10.1002/2015GL065806
|
| 论文题名: | Distributed subglacial discharge drives significant submarine melt at a Greenland tidewater glacier |
| 作者: | Fried M.J.; Catania G.A.; Bartholomaus T.C.; Duncan D.; Davis M.; Stearns L.A.; Nash J.; Shroyer E.; Sutherland D.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-8467
|
| EISSN: | 1944-8198
|
| 出版年: | 2015
|
| 卷: | 42, 期:21 | | 起始页码: | 9328
|
| 结束页码: | 9336
|
| 语种: | 英语
|
| 英文关键词: | glaciology
; subglacial hydrology
; submarine melt
; terminus
|
| Scopus关键词: | Hydrology
; Direct observations
; Extensive melting
; Glaciology
; Limited observations
; Melt distributions
; Subglacial hydrology
; Terminus
; Tidewater glaciers
; Submarines
; buoyancy
; crevasse
; discharge
; glacial hydrology
; ice breakup
; mass balance
; melt
; outflow
; plume
; subglacial environment
; tidewater glacier
; tributary
; underwater environment
; Arctic
; Greenland
|
| 英文摘要: | Submarine melt can account for substantial mass loss at tidewater glacier termini. However, the processes controlling submarine melt are poorly understood due to limited observations of submarine termini. Here at a tidewater glacier in central West Greenland, we identify subglacial discharge outlets and infer submarine melt across the terminus using direct observations of the submarine terminus face. We find extensive melting associated with small discharge outlets. While the majority of discharge is routed to a single, large channel, outlets not fed by large tributaries drive submarine melt rates in excess of 3.0 m d-1 and account for 85% of total estimated melt across the terminus. Nearly the entire terminus is undercut, which may intersect surface crevasses and promote calving. Severe undercutting constricts buoyant outflow plumes and may amplify melt. The observed morphology and melt distribution motivate more realistic treatments of terminus shape and subglacial discharge in submarine melt models. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955190724&doi=10.1002%2f2015GL065806&partnerID=40&md5=76ad5a6cb884337e70d73a0174a48770
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8083
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | Institute for Geophysics, University of Texas at Austin, Austin, TX, United States
|
| Recommended Citation: | |
Fried M.J.,Catania G.A.,Bartholomaus T.C.,et al. Distributed subglacial discharge drives significant submarine melt at a Greenland tidewater glacier[J]. Geophysical Research Letters,2015-01-01,42(21).
|
|
|