Threshold friction velocity: Moisture and particle size effects

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dc.contributor.committeeChairGregory, James M.
dc.contributor.committeeMemberFedler, Clifford B.
dc.contributor.committeeMemberZartman, Richard E.
dc.creatorDarwish, Mukaddes
dc.date.available2014-11-17T16:58:57Z
dc.date.issued1991-12
dc.description.abstractWind erosion is a serious problem that has negative impact on the environment, health, agriculture, and man's life. One of the most important variables needed to accurately model soil erosion by wind is threshold friction velocity. Through threshold friction velocity, both soil particle size and soil moisture effects are considered. Many studies were conducted to predict threshold friction velocity as a function of soil moisture and particle size. However, none of these studies resulted in a general equation. Gregory (1990) developed a theoretical equation to predict threshold friction velocity as a function of both soil moisture and particle size. Because the data sets reported in the literature were insufficient, the new data were needed. New data were collected in the Agricultural Engineering Department at Texas Tech University with a wide range in particle size and controlled moisture conditions. From the new data, it was concluded that Gregory's equation is valid and a general form for predicting threshold friction velocity as a function of soil moisture and particle size.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2346/59878
dc.language.isoeng
dc.rights.availabilityUnrestricted.
dc.subjectSoil physics
dc.subjectWind erosion
dc.titleThreshold friction velocity: Moisture and particle size effectsen_US
dc.typeThesis
thesis.degree.departmentAgricultural Engineering
thesis.degree.disciplineAgricultural Engineering
thesis.degree.grantorTexas Tech University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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