拐子湖地区二、三月份沙尘暴起沙浅析

The Research on Sandstorm of Cripple Lake during February and March

在巴丹吉林沙漠北缘拐子湖地区属于戈壁与沙漠过渡地带,起廊道作用.研究目的是对拐子湖地区沙化治理研究提供科学的理论依据,通过沙粒撞击动能分析和表摩擦速度和粗糙度的等计算,野外观察和实验的方法.在沙尘暴加强观测实验场,纬度41°22'N,经度102°22'E,海拔为960m,选取2011年2～3月的沙尘暴过程的数据.经计算二、三月份中10cm处沙平均动能为0.77J,平均风速v为3.91m.s-1,沙粒平均质量m为0.100843克,摩阻速度u*平均值为0.2161m.s-1.

Badain Jaran Desert and Cripple Lake lies in the northern edge of desert part of the transition zone, and plays the role of corridor. The study purpose of this paper is to provide a scientific basis for desertification control studies on cripple Lake. The study method are analysis of impact kinetic energy, calculation the surface friction velocity and roughness, field observation and experimental. Experimental field in the dust storm to strengthen observation, latitude 41 °22′N, longitude 102°22′E, altitude 960m, select the February-March 2011 dust storm process data. The calculation of two, three month average kinetic energy of the sand at 10cm 0. 77J, the average wind speed v is 3.91ms-1 , the average mass sand is 0. 100843 grams, the average friction velocity u＊ is 0.2161ms-1