Table 1 Aeolian dynamic parameters

From: Strong-wind events control barchan dune migration

Variable

Units

Value

Acceleration of gravity g

m s−1

9.81

Grain size d

m

106.9 × 10−6

Reference grain size Dg

m

250.0 × 10−6

Air density ρf

kg m−3

1.29

Grain density ρs

kg m−3

2.55 × 103

Aerodynamic roughness zs

m

10−3

von-Kármán constant \(\kappa\)

Ø

0.4

Constant C51

Ø

4.3

Threshold wind velocity ut

m s−1

3.31

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