DOI: 10.1007/s10584-013-1042-7
Scopus记录号: 2-s2.0-84896706906
论文题名: Assessing streamflow sensitivity to variations in glacier mass balance
作者: O'Neel S. ; Hood E. ; Arendt A. ; Sass L.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2014
卷: 123, 期: 2 起始页码: 329
结束页码: 341
语种: 英语
Scopus关键词: Continental environments
; Glacier change
; Glacier mass balance
; Glacier runoff
; Maritime climate
; Streamflow sensitivities
; Summer warming
; Winter snowpack
; Digital storage
; Runoff
; Sensitivity analysis
; Water quality
; Stream flow
; glacier mass balance
; glacier retreat
; sensitivity analysis
; snowpack
; streamflow
; water quality
; Alaska
; Coast Ranges
; Gulkana Glacier
; Kenai Mountains
; United States
; Gulo gulo
英文摘要: We examine long-term streamflow and mass balance data from two Alaskan glaciers located in climatically distinct basins: Gulkana Glacier, a continental glacier located in the Alaska Range, and Wolverine Glacier, a maritime glacier located in the Kenai Mountains. Over the 1966-2011 study interval, both glaciers lost mass, primarily as a result of summer warming, and streamflow increased in both basins. We estimate total glacier runoff via summer mass balance and quantify the fraction of runoff related to annual mass imbalances. In both climates, annual (net) mass balance contributes, on average, less than 20 % of total streamflow, substantially less than the fraction related to summer mass loss (>50 %), which occurs even in years of glacier growth. The streamflow fraction related to changes in annual balance increased significantly only in the continental environment. In the maritime climate, where deep winter snowpacks and frequent rain events drive consistently high runoff, the magnitude of this streamflow fraction was small and highly variable, precluding detection of any existing trend. Furthermore, our findings suggest that glacier mass change is likely to impact total basin water yield, timing of runoff and water quality in the continental environment. However, the impacts of maritime glacier change appear more likely to be limited to water quality and runoff timing. © 2014 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/84764
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: US Geological Survey Alaska Science Center, 4210 University Dr, Anchorage, AK, 99508, United States; Environmental Science Program, University of Alaska Southeast, Juneau, AK, United States; Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, United States
Recommended Citation:
O'Neel S.,Hood E.,Arendt A.,et al. Assessing streamflow sensitivity to variations in glacier mass balance[J]. Climatic Change,2014-01-01,123(2)