Predicting aeolian sand transport rates: A reevaluation of models

Douglas J. Sherman*, Bailiang Li

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

90 Citations (Scopus)

Abstract

Eight aeolian sand-transport models are evaluated using a field data set and a new approach to estimating shear velocity. The models are those of Bagnold (1937), Kawamura (1951), Zingg (1953), Owen (1964), Kadib (1965), Hsu (1971), Lettau and Lettau (1978) and Sørensen (2004). All of these models predict transport as a function of shear velocity to the third power. Shear velocities are estimated using wind profile data (log-linear slope) with the von Kármán constant and with the apparent von Kármán parameter and the results of the different approaches are evaluated based on comparison of regression statistics and RMS error. The models were not adjusted to account for sediment moisture content or local surface slope effects.All of the models have about the same statistical explanatory power, so evaluations were made by comparing slopes and intercepts of best fit (least-squares) lines and RMSE. From this basis, we conclude that predictions made with the Bagnold (1937) model best match our observations, with the models of Kadib (1965) and Hsu (1971) performing nearly as well. The Lettau and Lettau (1978) and Kawamura (1951) model predictions match observations least.

Original languageEnglish
Pages (from-to)371-378
Number of pages8
JournalAeolian Research
Volume3
Issue number4
DOIs
Publication statusPublished - Jan 2012
Externally publishedYes

Keywords

  • Apparent von Kármán parameter
  • Bagnold
  • Lettau and Lettau
  • Shear velocity

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