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 |
ISSN | 0885-6087 |
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 |
DOI | 10.1002/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 |
推荐引用方式 GB/T 7714 | 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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