J. R. B. Cantalice, V. P. Singh, Taiza K. A. Souza, E. O. S. Nunes, Genival Barros Junior, V. P. Silva Junior, Wagner L. S. Souza, Jeongwoo Han
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引用次数: 0
Abstract
Shallow water flow on semiarid hillslopes with shrubs or cultivated with crops often occurs as laminar flow without concentration. Typically, the flow has a low Reynolds number, usually below 100, and the surface hydraulic resistance generated from the interaction between the soil surface and vegetation that obstructs the flow is governed by the Froude number. This study conducted field experiments on Brazilian shrub and semiarid crop fields and applied the Crompton framework to model hydraulic resistance. The overland flow observed on semiarid hillslopes under crops or natural vegetation always presented Reynolds numbers between 32 and 54, and the flow was laminar and subcritical. By employing the kinematic wave approximation, the Crompton framework was found to model overland flow resistance over semiarid hillslopes with acceptable accuracy.
期刊介绍：
Environmental Earth Sciences is an international multidisciplinary journal concerned with all aspects of interaction between humans, natural resources, ecosystems, special climates or unique geographic zones, and the earth:
Water and soil contamination caused by waste management and disposal practices
Environmental problems associated with transportation by land, air, or water
Geological processes that may impact biosystems or humans
Man-made or naturally occurring geological or hydrological hazards
Environmental problems associated with the recovery of materials from the earth
Environmental problems caused by extraction of minerals, coal, and ores, as well as oil and gas, water and alternative energy sources
Environmental impacts of exploration and recultivation – Environmental impacts of hazardous materials
Management of environmental data and information in data banks and information systems
Dissemination of knowledge on techniques, methods, approaches and experiences to improve and remediate the environment
In pursuit of these topics, the geoscientific disciplines are invited to contribute their knowledge and experience. Major disciplines include: hydrogeology, hydrochemistry, geochemistry, geophysics, engineering geology, remediation science, natural resources management, environmental climatology and biota, environmental geography, soil science and geomicrobiology.
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