Arid
DOI10.1002/hyp.9545
A method for estimating spatially variable seepage and hydraulic conductivity in channels with very mild slopes
Shanafield, Margaret1; Niswonger, Richard G.2; Prudic, David E.3; Pohll, Greg1; Susfalk, Richard1; Panday, Sorab4
通讯作者Shanafield, Margaret
来源期刊HYDROLOGICAL PROCESSES
ISSN0885-6087
EISSN1099-1085
出版年2014
卷号28期号:1页码:51-61
英文摘要

Infiltration along ephemeral channels plays an important role in groundwater recharge in arid regions. A model is presented for estimating spatial variability of seepage due to streambed heterogeneity along channels based on measurements of streamflow-front velocities in initially dry channels. The diffusion-wave approximation to the Saint-Venant equations, coupled with Philip’s equation for infiltration, is connected to the groundwater model MODFLOW and is calibrated by adjusting the saturated hydraulic conductivity of the channel bed. The model is applied to portions of two large water delivery canals, which serve as proxies for natural ephemeral streams. Estimated seepage rates compare well with previously published values. Possible sources of error stem from uncertainty in Manning’s roughness coefficients, soil hydraulic properties and channel geometry. Model performance would be most improved through more frequent longitudinal estimates of channel geometry and thalweg elevation, and with measurements of stream stage over time to constrain wave timing and shape. This model is a potentially valuable tool for estimating spatial variability in longitudinal seepage along intermittent and ephemeral channels over a wide range of bed slopes and the influence of seepage rates on groundwater levels. Copyright (c) 2012 John Wiley & Sons, Ltd.


英文关键词infiltration groundwater surface water interaction diffusion analogy ephemeral Saint-Venant
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000328569800007
WOS关键词SURFACE-WATER ; GROUNDWATER RECHARGE ; EPHEMERAL CHANNELS ; ARID REGIONS ; FLOW ; MODEL ; INFILTRATION ; STREAM ; SIMULATION ; LOSSES
WOS类目Water Resources
WOS研究方向Water Resources
来源机构United States Geological Survey ; Desert Research Institute
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/182447
作者单位1.Desert Res Inst, Reno, NV 89512 USA;
2.US Geol Survey, Carson City, NV USA;
3.Univ Nevada, Reno, NV 89557 USA;
4.AMEC Geomatrix Inc, Herndon, VA USA
推荐引用方式
GB/T 7714
Shanafield, Margaret,Niswonger, Richard G.,Prudic, David E.,et al. A method for estimating spatially variable seepage and hydraulic conductivity in channels with very mild slopes[J]. United States Geological Survey, Desert Research Institute,2014,28(1):51-61.
APA Shanafield, Margaret,Niswonger, Richard G.,Prudic, David E.,Pohll, Greg,Susfalk, Richard,&Panday, Sorab.(2014).A method for estimating spatially variable seepage and hydraulic conductivity in channels with very mild slopes.HYDROLOGICAL PROCESSES,28(1),51-61.
MLA Shanafield, Margaret,et al."A method for estimating spatially variable seepage and hydraulic conductivity in channels with very mild slopes".HYDROLOGICAL PROCESSES 28.1(2014):51-61.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Shanafield, Margaret]的文章
[Niswonger, Richard G.]的文章
[Prudic, David E.]的文章
百度学术
百度学术中相似的文章
[Shanafield, Margaret]的文章
[Niswonger, Richard G.]的文章
[Prudic, David E.]的文章
必应学术
必应学术中相似的文章
[Shanafield, Margaret]的文章
[Niswonger, Richard G.]的文章
[Prudic, David E.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。