| DOI: | 10.1002/2014GL059250
|
| 论文题名: | Significant groundwater contribution to Antarctic ice streams hydrologic budget |
| 作者: | Christoffersen P.; Bougamont M.; Carter S.P.; Fricker H.A.; Tulaczyk S.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-10271
|
| EISSN: | 1944-10002
|
| 出版年: | 2014
|
| 卷: | 41, 期:6 | | 起始页码: | 2003
|
| 结束页码: | 2010
|
| 语种: | 英语
|
| 英文关键词: | groundwater
; hydrology
; Ice sheet
; Ice stream
; subglacial processes
|
| Scopus关键词: | Budget control
; Glacial geology
; Glaciers
; Groundwater
; Hydrology
; Melting
; Reservoirs (water)
; Antarctic ice stream
; Hydrologic budgets
; Hydrologic systems
; Ice sheet
; Ice streams
; Satellite observations
; Subglacial lakes
; Subglacial process
; Ice
; groundwater flow
; ice sheet
; ice stream
; melting
; numerical model
; recharge
; satellite imagery
; subglacial environment
; water budget
; Southern Ocean
|
| 英文摘要: | Satellite observations have revealed active hydrologic systems beneath Antarctic ice streams, but sources and sinks of water within these systems are uncertain. Here we use numerical simulations of ice streams to estimate the generation, flux, and budget of water beneath five ice streams on the Siple Coast. We estimate that 47% of the total hydrologic input (0.98 km3 yr-1) to Whillans (WIS), Mercer (MIS), and Kamb (KIS) ice streams comes from the ice sheet interior and that only 8% forms by local basal melting. The remaining 45% comes from a groundwater reservoir, an overlooked source in which depletion significantly exceeds recharge. Of the total input to Bindschadler (BIS) and MacAyeal (MacIS) ice streams (0.56 km3 yr -1), 72% comes from the interior, 19% from groundwater, and 9% from local melting. This contrasting hydrologic setting modulates the ice streams flow and has important implications for the search for life in subglacial lakes. © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896589093&doi=10.1002%2f2014GL059250&partnerID=40&md5=1f19eaa1fce8f8f298af98ba130f01e1
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7535
|
| Appears in Collections: | 气候减缓与适应
|
|
There are no files associated with this item.
|
|
作者单位: | Scott Polar Research Institute, University of Cambridge, Cambridge, United Kingdom
|
| Recommended Citation: | |
Christoffersen P.,Bougamont M.,Carter S.P.,et al. Significant groundwater contribution to Antarctic ice streams hydrologic budget[J]. Geophysical Research Letters,2014-01-01,41(6).
|
|
|