Estimation of Dust Generation by Wind Erosion in Guaizihu Lake

In order to study the dust generation by wind erosion and some parameters of the center of dust storm,a process of dust storm was monitored at Guaizihu Lake of Badan Jaran Desert.Some parameters of the process of sand wind erosion were analyzed by empirical formula and observation of field instruments.The results were that: Friction velocity was positively relationed to the wind speed,and the friction velocity affected the change of sand flux;the critical friction velocity was 0.36 m/s,the average horizontal sand flux and wind vertical sand flux were estimated as 1.7E-02 kg/（m·s） and 1.38E-07 kg/（m2·s）,respectively.The horizontal sand flux was much larger than the vertical one.The obtained parameters have great significance to wind prevention and sand control.