DOI: 10.1016/j.jhydrol.2020.124578
论文题名: Glacier retreat changes diurnal variation intensity and frequency of hydrologic variables in Alpine and Andean streams
作者: Kneib M. ; Cauvy-Fraunié S. ; Escoffier N. ; Boix Canadell M. ; Horgby Å. ; Battin T.J.
刊名: Journal of Hydrology
ISSN: 221694
出版年: 2020
卷: 583 语种: 英语
英文关键词: Diurnal glacial flood
; Glacier retreat
; Hydrological parameters
; Space-for-time substitution
; Stream hydrology
; Wavelet analysis
Scopus关键词: Catchments
; Landforms
; Runoff
; Temperature
; Tropics
; Turbidity
; Wavelet analysis
; Climatic regimes
; Diurnal variation
; Glacier retreat
; High frequency time series
; Hydrological parameters
; Mountain streams
; Tropical Andes
; Water temperatures
; Time series analysis
; alpine environment
; catchment
; discharge
; diurnal variation
; flood
; glacier retreat
; global change
; hydrological change
; mountain stream
; stream
; wavelet analysis
; Alps
; Andes
; Ecuador
; Switzerland
英文摘要: The impacts of glacier mass and area loss are assumed to affect stream hydrology and related ecosystems. We applied wavelet analysis to high frequency time series of discharge, conductivity, turbidity, air and water temperature in mountain streams influenced by a gradient of diverse glacier catchment coverages from 0 to 28%. All parameters were recorded during 200–250 day period in 24 mountain streams in Switzerland and Ecuador. We interpreted the range of glacier coverage as a proxy of glacier melt effect linked to modification in glacier cover based on a space-for-time substitution approach. We used the diurnal variation power and frequency as hydrological parameters to quantify the intensity and occurrence of significant diurnal variations in the different mountain catchments. Our results show that the reduction in glacier cover would reduce the intensity and occurrence of diurnal variations in discharge, turbidity and conductivity, and the intensity of diurnal variations in water temperature. Discharge and conductivity were affected in a similar way, while the impact on turbidity was less significant. Furthermore, due to their different climatic regimes, the diurnal discharge in the tropical Andes was more impacted than in the Alps, indicating that the impacts of global change on glacier streams would be stronger in the tropical Andes than in the Alps. © 2020 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158437
Appears in Collections: 气候变化与战略
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作者单位: Stream Biofilm and Ecosystem Research Laboratory, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland; Centre de géosciences, MINES Paristech, PSL University, Fontainebleau, 77300, France; IRSTEA, UR RiverLy, Centre de Lyon-Villeurbanne, Villeurbanne, 69100, France; Institute of Earth Surface Dynamics (IDYST), University of Lausanne, Lausanne, Switzerland
Recommended Citation:
Kneib M.,Cauvy-Fraunié S.,Escoffier N.,et al. Glacier retreat changes diurnal variation intensity and frequency of hydrologic variables in Alpine and Andean streams[J]. Journal of Hydrology,2020-01-01,583