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Wind erosion in semiarid landscapes: Predictive models and remote sensing methods for the influence of vegetationWind erosion in semi-arid regions is a significant problem for which the sheltering effect of rangeland vegetation is poorly understood. Individual plants may be considered as porous roughness elements which absorb or redistribute the wind's momentum. The saltation threshold is the minimum wind velocity at which soil movement begins. The dependence of the saltation threshold on geometrical parameters of a uniform roughness array was studied in a wind tunnel. Both solid and porous elements were used to determine relationships between canopy structure and the threshold velocity for soil transport. The development of a predictive relation for the influence of vegetation canopy structure on wind erosion of soil is discussed.
Document ID
19930007193
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Musick, H. Brad
(New Mexico Univ. Albuquerque, NM, United States)
Truman, C. Randall
(New Mexico Univ. Albuquerque, NM, United States)
Trujillo, Steven M.
(New Mexico Univ. Albuquerque, NM, United States)
Date Acquired
September 6, 2013
Publication Date
December 31, 1992
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NASA-CR-191886
NAS 1.26:191886
Accession Number
93N16382
Funding Number(s)
CONTRACT_GRANT: NAG5-1833
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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