Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR019651 |
Inferring hydraulic properties of alpine aquifers from the propagation of diurnal snowmelt signals | |
Kurylyk, Barret L.1,2; Hayashi, Masaki1 | |
2017-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Alpine watersheds source major rivers throughout the world and supply essential water for irrigation, human consumption, and hydroelectricity. Coarse depositional units in alpine watersheds can store and transmit significant volumes of groundwater and thus augment stream discharge during the dry season. These environments are typically data scarce, which has limited the application of physically based models to investigate hydrologic sensitivity to environmental change. This study focuses on a coarse alpine talus unit within the Lake O'Hara watershed in the Canadian Rockies. We investigate processes controlling the hydrologic functioning of the talus unit using field observations and a numerical groundwater flow model driven with a distributed snowmelt model. The model hydraulic parameters are adjusted to investigate how these properties influence the propagation of snowmelt-induced diurnal signals. The model results expectedly demonstrate that diurnal signals at the talus outlet are progressively damped and lagged with lower hydraulic conductivity and higher specific yield. The simulations further indicate that the lag can be primarily controlled by a higher hydraulic conductivity upper layer, whereas the damping can be strongly influenced by a lower hydraulic conductivity layer along the base of the talus. The simulations specifically suggest that the talus slope can be represented as a two layer system with a high conductivity zone (0.02 m s(-1)) overlying a 10 cm thick lower conductivity zone (0.002 m s(-1)). This study demonstrates that diurnal signals can be used to elucidate the hydrologic functioning and hydraulic properties of shallow aquifers and thus aid in the parameterization of hydrological models. |
英文关键词 | diel signals model calibration groundwater modeling alpine hydrology stage fluctuations hillslope hydrology |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403712100044 |
WOS关键词 | CAMBRIAN GOG GROUP ; GROUNDWATER-FLOW ; HEADWATER BASIN ; CLIMATE-CHANGE ; SUBSURFACE FLOW ; ROCKY-MOUNTAINS ; STREAMFLOW ; STORAGE ; CATCHMENT ; HILLSLOPES |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21999 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Calgary, Dept Geosci, Calgary, AB, Canada; 2.McMaster Univ, Sch Geog & Earth Sci, Hamilton, ON, Canada |
推荐引用方式 GB/T 7714 | Kurylyk, Barret L.,Hayashi, Masaki. Inferring hydraulic properties of alpine aquifers from the propagation of diurnal snowmelt signals[J]. WATER RESOURCES RESEARCH,2017,53(5). |
APA | Kurylyk, Barret L.,&Hayashi, Masaki.(2017).Inferring hydraulic properties of alpine aquifers from the propagation of diurnal snowmelt signals.WATER RESOURCES RESEARCH,53(5). |
MLA | Kurylyk, Barret L.,et al."Inferring hydraulic properties of alpine aquifers from the propagation of diurnal snowmelt signals".WATER RESOURCES RESEARCH 53.5(2017). |
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