干旱区生态环境知识资源中心(Arid): Water table rise in arid urban area soils due to evaporation impedance and its mitigation by intelligently designed capillary chimney siphons

Arid

DOI	10.1007/s12665-021-09857-3
	Water table rise in arid urban area soils due to evaporation impedance and its mitigation by intelligently designed capillary chimney siphons
	Kacimov, Anvar; Al-Maktoumi, Ali; Al-Ismaily, Said; Al-Mayahi, Ahmed; Al-Shukaili, Afrah; Obnosov, Yurii; Abdalla, Osman
通讯作者	Kacimov, A (corresponding author), Sultan Qaboos Univ, Dept Soils Water & Agr Engn, Al Khod 123,POB 34, Muscat, Oman.
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2021
卷号	80 期号:17
英文摘要	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 conducted: 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, S-d, 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, u(1). Nontrivial extremes of S-d(d,u(1)) 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 S-d 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.
英文关键词	Capillary siphoning Aquisalids Rising water table Wetlands MODFLOW and HYDRUS2D simulations Vadose zone Oman
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000691002400001
WOS关键词	GROUNDWATER LEVELS ; URBANIZATION ; MANAGEMENT ; IMPACTS ; DESERT ; CITY ; HYDROGEOLOGY ; BARRIERS ; PLAYAS ; DUNES
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363108
作者单位	[Kacimov, Anvar; Al-Maktoumi, Ali; Al-Ismaily, Said; Al-Mayahi, Ahmed; Al-Shukaili, Afrah] Sultan Qaboos Univ, Dept Soils Water & Agr Engn, Al Khod 123,POB 34, Muscat, Oman; [Al-Maktoumi, Ali; Abdalla, Osman] Sultan Qaboos Univ, Water Res Ctr, Muscat, Oman; [Obnosov, Yurii] Kazan Fed Univ, Inst Math & Mech, Kazan, Russia; [Abdalla, Osman] Sultan Qaboos Univ, Dept Earth Sci, Muscat, Oman
推荐引用方式 GB/T 7714	Kacimov, Anvar,Al-Maktoumi, Ali,Al-Ismaily, Said,et al. Water table rise in arid urban area soils due to evaporation impedance and its mitigation by intelligently designed capillary chimney siphons[J],2021,80(17).
APA	Kacimov, Anvar.,Al-Maktoumi, Ali.,Al-Ismaily, Said.,Al-Mayahi, Ahmed.,Al-Shukaili, Afrah.,...&Abdalla, Osman.(2021).Water table rise in arid urban area soils due to evaporation impedance and its mitigation by intelligently designed capillary chimney siphons.ENVIRONMENTAL EARTH SCIENCES,80(17).
MLA	Kacimov, Anvar,et al."Water table rise in arid urban area soils due to evaporation impedance and its mitigation by intelligently designed capillary chimney siphons".ENVIRONMENTAL EARTH SCIENCES 80.17(2021).