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Hydrologic Discovery Through Physical Analysis Honoring the Scientific Legacies of Wilfried H. Brutsaert and Jean-Yves Parlange >
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Title: A4. Hydrologic Controls on Wind Erosion in Arid Landscapes
Authors: D’Odorico, Paolo
Issue Date: May-2012
Publisher: Internet-First University Press
Abstract: Wind erosion is a dominant geomorphological process in arid landscapes. It contributes to the loss of soil resources and the emission of mineral dust, with major impacts on regional climate, biogeochemical cycles and human health. Wind erosion occurs when the wind speed exceeds a certain threshold value, which depends on a number of factors including surface soil moisture. Through this control on the threshold velocity, hydrological processes affect the soil’s susceptibility to wind erosion and the rate of sediment transport. In arid regions the atmospheric humidity plays an important role in determining both the surface moisture content and the threshold shear velocity. The dependence of threshold velocity on near surface air humidity and fire-induced water repellency is discussed using a series of wind tunnel tests, laboratory measurements, and theoretical frameworks.
Description: Once downloaded, these high definition QuickTime videos may be played using a computer video player with H.264 codec, 1280x720 pixels, millions of colors, AAC audio at 44100Hz and 29.97 frames per second. The data rate is 5Mbps. File sizes are on the order of 600-900 MB. (Other formats may be added later.) Free QuickTime players for Macintosh and Window computers may be located using a Google search on QuickTime. The DVD was produced by J. Robert Cooke.
Appears in Collections:Hydrologic Discovery - Oral Presentations (Videos)

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File Description SizeFormat
streaming_29550.htmlView Streaming Video8.2 kBHTMLView/Open
A4_D'Odorico_SLIDES.pdfPDF of slides used in the lecture14.91 MBAdobe PDFView/Open
A4_D'Odorico_Erosion_SD_for_Apple_Devices.m4vDownload small version of Video182.7 MBM4v VideoView/Open
A4_D'Odorico_Erosion-HD_for_Apple_Devices_5Mbps.m4vDownload HD Video for Apple Devices578.65 MBM4v VideoView/Open

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