Arid
DOI10.1002/hyp.10987
Modelling evaporation processes in soils from the Huasco salt flat basin, Chile
Fernanda Hernandez-Lopez, Maria1,2; Braud, Isabelle3; Gironas, Jorge2,4,5; Suarez, Francisco2,4; Francisco Munoz, Jose2
通讯作者Suarez, Francisco
来源期刊HYDROLOGICAL PROCESSES
ISSN0885-6087
EISSN1099-1085
出版年2016
卷号30期号:25页码:4704-4719
英文摘要

The need to understand and simulate hydrological phenomena and their interactions, and the impact of anthropogenic and climate changes on natural environments have promoted the study of evaporation from bare soils in arid climates. In closed Altiplano basins, such as those encountered in arid and hyper arid basins in northern Chile, evaporation from shallow groundwater is the main source of aquifer depletion, and thus, its study is crucial for water resources management. The objective of this work is to understand the mechanisms of evaporation in saline soils with shallow water tables, in order to better quantify evaporation fluxes and improve our understanding of the water balance in these regions. To achieve this objective, a model that couples fluid flow with heat transfer was developed and calibrated using column experiments with saline soils from the Huasco salt flat basin, Chile. The model enables determination of both liquid and water vapour fluxes, as well as the location of the evaporation front. Experimental results showed that salt transport inside the soil profile modified the water retention curve, highlighting the importance of including salt transport when modelling the evaporation processes in these soils. Indeed, model simulations only agreed with the experimental data when the effect of salt transport on water retention curves was taken into account. Model results also showed that the evaporation front is closer to the soil surface as the water table depth reduces. Therefore, the model allows determining the groundwater level depth that results in disconnection of liquid fluxes in the vadose zone. A sensitivity analysis allowed understanding the effect of water-flux enhancements mechanisms on soil evaporation. The results presented in this study are important as they allow quantifying the evaporation that occurs in bare soils from Altiplano basins, which is typically the main water discharge in these closed basins. Copyright (C) 2016 John Wiley & Sons, Ltd.


英文关键词soil evaporation Altiplano basins saline soil column vapour flow SiSPAT
类型Article
语种英语
国家Chile ; France
收录类别SCI-E
WOS记录号WOS:000393030500004
WOS关键词(H2O)-O-18 TRANSPORT MODEL ; STABLE-ISOTOPE HDO ; BARE SOIL ; REACTIVE TRANSPORT ; WATER TRANSPORT ; SISPAT-ISOTOPE ; NORTHERN CHILE ; POROUS SOLIDS ; COUPLED HEAT ; PART II
WOS类目Water Resources
WOS研究方向Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/193466
作者单位1.AMEC, Environm & Infrastruct, Ave Apoquindo 3846 Las Condes, Santiago, Chile;
2.Pontificia Univ Catolica Chile, Dept Ingn Hidraul & Ambiental, Ave Vicuna Mackenna 4860,Casilla 306,Correo 22, Santiago, Chile;
3.Irstea, UR HHLY, 5 Rue Doua,CS 70077, F-69626 Villeurbanne, France;
4.CONICYT FONDAP 15110020, Ctr Desarrollo Urbano Sustentable CEDEUS, Santiago, RM, Chile;
5.CONICYT FONDAP 15110020, Ctr Invest Gest Integrada Desastres Nat CIGIDEN, Santiago, RM, Chile
推荐引用方式
GB/T 7714
Fernanda Hernandez-Lopez, Maria,Braud, Isabelle,Gironas, Jorge,et al. Modelling evaporation processes in soils from the Huasco salt flat basin, Chile[J],2016,30(25):4704-4719.
APA Fernanda Hernandez-Lopez, Maria,Braud, Isabelle,Gironas, Jorge,Suarez, Francisco,&Francisco Munoz, Jose.(2016).Modelling evaporation processes in soils from the Huasco salt flat basin, Chile.HYDROLOGICAL PROCESSES,30(25),4704-4719.
MLA Fernanda Hernandez-Lopez, Maria,et al."Modelling evaporation processes in soils from the Huasco salt flat basin, Chile".HYDROLOGICAL PROCESSES 30.25(2016):4704-4719.
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