wind friction velocity

基本解释

The threshold friction velocity over the Loess Plateau depends on the wind direction, due to the complex terrain and inhomogeneous surface.
由于受地形及非均匀下垫面的影响，黄土高原的临界起沙摩擦速度与风向有关。
According to the micro-aggregates size distribution parameter, roughness length from the simulation of ground situation threshold friction velocity and friction wind speed;
由表土微团粒粒度分布参数、地表状况等模拟粗糙度、起动摩阻风速和摩阻风速；
Using the data of the wind gradient observation on oil platform in Bohai sea, the sea surface friction velocity and roughness under different wind conditions were calculated.
本文用海上石油平台上观测的风梯度资料，计算了在不同风况下海面摩擦速度和粗糙高度。