threshold friction

The difference of threshold friction velocity at desert and oasis results in that the occurring frequency of the dusty weather at oasis is more than that at desert.

农田和沙地起沙临界摩擦速度的差异，导致绿洲站沙尘天气发生的频数比沙漠站大；

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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。

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We established the stochastic model of threshold friction velocity, and derived an analytical expression of the threshold friction velocity with random variables ( the eccentricity, the eccentricity angle, support angle and contact angle).

建立了临界启动风速的随机模型，推导出含有随机变量（偏心距、偏心角、支持角以及接触角）的临界启动风速的解析表达式。

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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；

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Field Observation of Dust Threshold Friction Velocity on Different Types on Farmland Surfaces

不同类型农田地表粉尘起动摩阻风速的野外观测

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Different threshold friction velocities and occurrence frequencies of strong wind account for the different dust emission capabilities for source areas.

不同的起沙阈值条件和风速频率分布与沙尘释放能力的不同相对应。

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The Mean Threshold Wind Friction Velocities of Surface Soils with Various Land Cover Types in Badain Juran Desert, China

巴丹吉林沙漠戈壁地区不同地表覆盖类型下表土的平均起动摩阻风速

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