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A hydrographic method to identify the groundwater net recharge, barometric effect and evapotranspiration from a complicated semidiurnal water table fluctuation
Cheng, Donghui1,2; Yuan, Jing1,2; Qi, Lijun3
通讯作者Cheng, Donghui(chdhbsh@chd.edu.cn)
2021-10-01
发表期刊HYDROLOGICAL PROCESSES
ISSN0885-6087
卷号35期号:10页码:9
摘要A hydrographic method was proposed to separate out the hourly scaled groundwater level changes caused by net recharge, barometric effects and evapotranspiration from a semidiurnal water table fluctuation. A characteristic midnight time, with a turning point of the barometric pressure change and high relative air humidity, which meant that neither the barometric effect nor groundwater evapotranspiration occurred, was proposed for determining the net recharge rate r(net). Then, the barometric efficiency f(bar) was estimated using the other time period without evapotranspiration, and the evapotranspiration rate r(ETG) was finally obtained using the remainder of the water level changes. A case example illustrated that estimation of f(bar) using the proposed method was more accurate than that using the traditional error analysis method, which may result in a significant underestimation under the condition of the present water level changes. Additionally, the abnormal semidiurnal fluctuations, more specifically, two step-down fluctuations, which may be a common pattern when the groundwater level is controlled by net recharge, barometric effects and evapotranspiration, can be well understood using the three components separated out. The results also showed that nighttime groundwater evapotranspiration, accounting for an average of 23% of that during the daytime, cannot be ignored.
关键词barometric effect barometric efficiency groundwater evapotranspiration net recharge rate water table fluctuation method
DOI10.1002/hyp.14383
关键词[WOS]NIGHTTIME TRANSPIRATION ; STOMATAL CONDUCTANCE ; REMOVAL ; PLANTS ; TIDES ; C-3
收录类别SCI ; SCI
语种英语
资助项目Natural Science Basic Research Plan in Shaanxi Province of China[2019JM-146] ; National Natural Science Foundation of China[41972248]
WOS研究方向Water Resources
项目资助者Natural Science Basic Research Plan in Shaanxi Province of China ; National Natural Science Foundation of China
WOS类目Water Resources
WOS记录号WOS:000711813100011
出版者WILEY
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/17224
专题生态环境研究室
通讯作者Cheng, Donghui
作者单位1.Changan Univ, Sch Water & Environm, Xian 710054, Peoples R China
2.Changan Univ, Minist Educ, Key Lab Subsurface Hydrol & Ecol Effects Arid Reg, Xian, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, Xian, Peoples R China
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Cheng, Donghui,Yuan, Jing,Qi, Lijun. A hydrographic method to identify the groundwater net recharge, barometric effect and evapotranspiration from a complicated semidiurnal water table fluctuation[J]. HYDROLOGICAL PROCESSES,2021,35(10):9.
APA Cheng, Donghui,Yuan, Jing,&Qi, Lijun.(2021).A hydrographic method to identify the groundwater net recharge, barometric effect and evapotranspiration from a complicated semidiurnal water table fluctuation.HYDROLOGICAL PROCESSES,35(10),9.
MLA Cheng, Donghui,et al."A hydrographic method to identify the groundwater net recharge, barometric effect and evapotranspiration from a complicated semidiurnal water table fluctuation".HYDROLOGICAL PROCESSES 35.10(2021):9.
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