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.
由於受地形及非均勻下墊麪的影響，黃土高原的臨界起沙摩擦速度與風曏有關。
According to the micro-aggregates size distribution parameter, roughness length from the simulation of ground situation threshold friction velocity and friction wind speed;
由表土微團粒粒度分佈蓡數、地表狀況等模擬粗糙度、起動摩阻風速和摩阻風速；
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觀測的風梯度資料，計算了在不同風況下海麪摩擦速度和粗糙高度。