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Vadose Zone Hydrology: soil physics, unsaturated flow and transport processes, contaminant hydrology, x-ray microtomography, plant root-soil water interactions, parameter optimization of soil and hydrologic properties, flow and transport modeling, irrigation water management.
The distinction between ground water and the unsaturated zone is usually made within a hydrologic context that views water as the agent of change of the subsurface and the main driver for transport of chemicals between the atmosphere and ground water. This region between the soil surface and groundwater table, known as the vadose zone, involves a complex array of time-dependent nonlinear physical, chemical and biological processes, including interactions with ground water and the atmosphere. The soil is the most upper part of the vadose zone, subject to fluctuations in water and chemical content by infiltration and leaching, water uptake by plant roots, and evaporation from the soil surface. It is the most dynamic part of the subsurface, as changes occur at increasingly smaller time and spatial scales when moving from the groundwater table towards the soil surface. The vadose zone may extend much deeper than the surficial soil layer and includes unsaturated rock formations and alluvial materials to depths of 100 m or more. In the last few decades, research interests in the deeper vadose zone have increased dramatically, instigated by a need to sustain quality of groundwater and maintain adequate resources for drinking water and ecological purposes.
The distinction between ground water and the unsaturated zone is usually made within a hydrologic context that views water as the agent of change of the subsurface and the main driver for transport of chemicals between the atmosphere and ground water. This region between the soil surface and groundwater table, known as the vadose zone, involves a complex array of time-dependent nonlinear physical, chemical and biological processes, including interactions with ground water and the atmosphere. The soil is the most upper part of the vadose zone, subject to fluctuations in water and chemical content by infiltration and leaching, water uptake by plant roots, and evaporation from the soil surface. It is the most dynamic part of the subsurface, as changes occur at increasingly smaller time and spatial scales when moving from the groundwater table towards the soil surface. The vadose zone may extend much deeper than the surficial soil layer and includes unsaturated rock formations and alluvial materials to depths of 100 m or more. In the last few decades, research interests in the deeper vadose zone have increased dramatically, instigated by a need to sustain quality of groundwater and maintain adequate resources for drinking water and ecological purposes.
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VADOSE ZONE JOURNAL (2024)
Vadose Zone Journalno. 1 (2023)
The Food Security, Biodiversity, and Climate Nexuspp.441-477, (2022)
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Reference Module in Earth Systems and Environmental Sciencespp.379-384, (2022)
Carlos Manoel Pedro Vaz, Luiz Fernando Porto, Carlos Ignácio D´Alkaine,Luis Henrique Bassoi,André Torre Neto,Jan W. Hopmans, Dennis E. Rolston
Emerging Challenges to Food Production and Security in Asia, Middle East, and Africapp.241-266, (2021)
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