Arid
DOI10.1007/s10040-010-0659-0
Excess air during aquifer storage and recovery in an arid basin (Las Vegas Valley, USA)
Solomon, D. Kip1; Cole, Erin2; Leising, Joseph F.3
通讯作者Solomon, D. Kip
来源期刊HYDROGEOLOGY JOURNAL
ISSN1431-2174
出版年2011
卷号19期号:1页码:187-194
英文摘要

The Las Vegas Valley Water District in Nevada, USA, has operated an artificial recharge (AR) program since 1989. In summer 2001, observations of gas exsolving from tap water prompted a study that revealed total dissolved gas (TDG) pressures approaching 2 atm with a gas composition that it is predominantly air. Measurements of TDG pressure at well heads and in the distribution system indicated two potential mechanisms for elevated TDG pressures: (1) air entrainment during AR operations, and (2) temperature changes between the winter recharge season and the summer withdrawal season. Air entrainment during pumping was investigated by intentionally allowing the forebay (upstream reservoir) of a large pumping station to drawdown to the point of vortex formation. This resulted in up to a 0.7 atm increase in TDG pressure. In general, the solubility of gases in water decreases as the temperature increases. In the Las Vegas Valley, water that acquired a modest amount of dissolved gas during winter artificial recharge operations experienced an increase in dissolved gas pressure (0.04 atm/A degrees C) as the water warmed in the subsurface. A combination of air entrainment during AR operations and its amplification by temperature increase after recharge can account for most of the observed amounts of excess gas at this site.


英文关键词Artificial recharge Dissolved gas Arid regions Hydrochemistry USA
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000286209700016
WOS关键词IN-GROUND WATER ; NOBLE-GASES
WOS类目Geosciences, Multidisciplinary ; Water Resources
WOS研究方向Geology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/168405
作者单位1.Univ Utah, Dept Geol & Geophys, Salt Lake City, UT 84112 USA;
2.Las Vegas Valley Water Dist, Las Vegas, NV 89153 USA;
3.So Nevada Water Author, Molasky Corp Ctr, Las Vegas, NV 89106 USA
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Solomon, D. Kip,Cole, Erin,Leising, Joseph F.. Excess air during aquifer storage and recovery in an arid basin (Las Vegas Valley, USA)[J],2011,19(1):187-194.
APA Solomon, D. Kip,Cole, Erin,&Leising, Joseph F..(2011).Excess air during aquifer storage and recovery in an arid basin (Las Vegas Valley, USA).HYDROGEOLOGY JOURNAL,19(1),187-194.
MLA Solomon, D. Kip,et al."Excess air during aquifer storage and recovery in an arid basin (Las Vegas Valley, USA)".HYDROGEOLOGY JOURNAL 19.1(2011):187-194.
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