KFU. Card publication. Water Table Rise in Arid Urban Area Soils Due to Evaporation Impedance and Its Mitigation by Intelligently Designed Capillary Chimney Siphons

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WATER TABLE RISE IN ARID URBAN AREA SOILS DUE TO EVAPORATION IMPEDANCE AND ITS MITIGATION BY INTELLIGENTLY DESIGNED CAPILLARY CHIMNEY SIPHONS

Form of presentation

Articles in international journals and collections

Year of publication

2021

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Authors, employees of KFU

Obnosov Yuriy Viktorovich, author

Other authors

Abdalla Osman , author

Al-Ismaily Said , author

Al-Maktoumi Ali , author

Al-Mayahi Ahmed , author

Al-Shukaili Afrah , author

Kacimov Anvar Rashidovich, author

Bibliographic description in the original language

Anvar Kacimov, Ali Al-Maktoumi, Said Al-Ismaily, Ahmed Al-Mayahi, Afrah Al-Shukaili, Yurii Obnoso, Abdalla Osman, Water Table Rise in Arid Urban Area Soils Due to Evaporation Impedance and Its Mitigation by Intelligently Designed Capillary Chimney Siphons. Environmental Earth Sciences (Springer) DOI: 10.1007/s12665-021-09857-3 (IF=2.784, Q3 ,Q2)

Annotation

Waterlogging of urban area soil in a hyperarid climate, caused by impedance of evapotranspiration due to land cover by an impervious pavement, is studied by a multidisciplinary team of researchers (hydropedeologists, hydrogeologists, groundwater engineers, soil physicists and mathematical modelers). In this paper, a study unique for an arid/hyperarid MENA region has been done: from soil pedons' data, a thin vadose zone superjacent to a shallow water table of a coastal aquifer in Oman is described with emphasis on soil profile morphology-layering and determination of the Van Genuchten hydraulic parameters, used in HYDRUS-modeling of evaporation-driven saturated-unsaturated flows. On a large scale, for capillarity-free groundwater flow, the Dupuit-Forchheimer model is used and an analytical solution is obtained. Intensive evaporation from the water table to a bare unpaved soil surface is impeded by an impermeable surface strip (land pavement) with an ensued rise of the water table. Waterlogging is quantified by the “dry area”, Sd, under the strip. This integral is explicitly evaluated as a function of the model parameters: aquifer's size and evaporation-normalized conductivity, the width of the strip, d, and its locus with respect to the shoreline, u1. Nontrivial extremes of Sd(d,u1) are found. Contrary to the surface pavement, intensification of evaporation by capillary siphons, i.e. structural heterogeneities of a porous massif, is proposed as an engineering mitigation of groundwater inundation. Composite porous media with siphons (small-size rectangular inclusions of a contrasting finer texture) are numerically tackled by MODFLOW and HYDRUS2D. A constant flux or a constant pressure head condition is imposed on the top of the flow domain. The water table is shown to drop and Sd to increase as a result of such “passive moisture pumping” from the aquifer. A potential model for 2D tension-saturated flow is used to solve a mixed boundary-value problem in a rectangular wick. Its flow rate is analytically evaluated as a function of evaporating width and the height of the “window” through which the aquifer feeds the wick. Conformal mapping of a rectangle in the physical domain onto a rectangle in the complex potential plane is realized via two reference planes and elliptic functions.

Keywords

Capillary siphoning, Aquisalids, Rising water-table, Wetlands, MODFLOW and HYDRUS2D simulations, Vadose zone, Oman

The name of the journal

Environmental Earth Sciences

URL

https://doi.org/10.1007/s12665-021-09857-3

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=255888&p_lang=2

Resource files

File name	Size (MB)	Format
_Dewatering_by_siphons.pdf	1,42	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Obnosov Yuriy Viktorovich	ru_RU
dc.contributor.author	Abdalla Osman	ru_RU
dc.contributor.author	Al-Ismaily Said	ru_RU
dc.contributor.author	Al-Ismaily Said	ru_RU
dc.contributor.author	Al-Maktoumi Ali	ru_RU
dc.contributor.author	Al-Mayahi Ahmed	ru_RU
dc.contributor.author	Al-Shukaili Afrah	ru_RU
dc.contributor.author	Al-Shukaili Afrah	ru_RU
dc.contributor.author	Kacimov Anvar Rashidovich	ru_RU
dc.date.accessioned	2021-01-01T00:00:00Z	ru_RU
dc.date.available	2021-01-01T00:00:00Z	ru_RU
dc.date.issued	2021	ru_RU
dc.identifier.citation	Anvar Kacimov, Ali Al-Maktoumi, Said Al-Ismaily, Ahmed Al-Mayahi, Afrah Al-Shukaili, Yurii Obnoso, Abdalla Osman, Water Table Rise in Arid Urban Area Soils Due to Evaporation Impedance and Its Mitigation by Intelligently Designed Capillary Chimney Siphons. Environmental Earth Sciences (Springer) DOI: 10.1007/s12665-021-09857-3 (IF=2.784, Q3 ,Q2)	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=255888&p_lang=2	ru_RU
dc.description.abstract	Environmental Earth Sciences	ru_RU
dc.description.abstract	Waterlogging of urban area soil in a hyperarid climate, caused by impedance of evapotranspiration due to land cover by an impervious pavement, is studied by a multidisciplinary team of researchers (hydropedeologists, hydrogeologists, groundwater engineers, soil physicists and mathematical modelers). In this paper, a study unique for an arid/hyperarid MENA region has been done: from soil pedons' data, a thin vadose zone superjacent to a shallow water table of a coastal aquifer in Oman is described with emphasis on soil profile morphology-layering and determination of the Van Genuchten hydraulic parameters, used in HYDRUS-modeling of evaporation-driven saturated-unsaturated flows. On a large scale, for capillarity-free groundwater flow, the Dupuit-Forchheimer model is used and an analytical solution is obtained. Intensive evaporation from the water table to a bare unpaved soil surface is impeded by an impermeable surface strip (land pavement) with an ensued rise of the water table. Waterlogging is quantified by the “dry area”, Sd, under the strip. This integral is explicitly evaluated as a function of the model parameters: aquifer's size and evaporation-normalized conductivity, the width of the strip, d, and its locus with respect to the shoreline, u1. Nontrivial extremes of Sd(d,u1) are found. Contrary to the surface pavement, intensification of evaporation by capillary siphons, i.e. structural heterogeneities of a porous massif, is proposed as an engineering mitigation of groundwater inundation. Composite porous media with siphons (small-size rectangular inclusions of a contrasting finer texture) are numerically tackled by MODFLOW and HYDRUS2D. A constant flux or a constant pressure head condition is imposed on the top of the flow domain. The water table is shown to drop and Sd to increase as a result of such “passive moisture pumping” from the aquifer. A potential model for 2D tension-saturated flow is used to solve a mixed boundary-value problem in a rectangular wick. Its flow rate is analytically evaluated as a function of evaporating width and the height of the “window” through which the aquifer feeds the wick. Conformal mapping of a rectangle in the physical domain onto a rectangle in the complex potential plane is realized via two reference planes and elliptic functions.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Capillary siphoning	ru_RU
dc.subject	Aquisalids	ru_RU
dc.subject	Rising water-table	ru_RU
dc.subject	Wetlands	ru_RU
dc.subject	MODFLOW and HYDRUS2D simulations	ru_RU
dc.subject	Vadose zone	ru_RU
dc.subject	Oman	ru_RU
dc.title	Water Table Rise in Arid Urban Area Soils Due to Evaporation Impedance and Its Mitigation by Intelligently Designed Capillary Chimney Siphons	ru_RU
dc.type	Articles in international journals and collections	ru_RU