关键词: 戈壁风沙流, 沙粒运动特征, 风沙流结构, 风沙流强度, 风沙流能量

Abstract: Based on the theoretical research and experimental results. this paper discusses the sand grain's initial bouncing angle,drifting sand flux structure,intensity and energy distribution,The comparison study on drifting sand flux over gobi and sandy ground,including both theoretical and experimental results,indicated that the mean angle of sand grain bouncing on gobi surface is larger.The sand amount in drifting sand flux over gobi decreases slower with increasing height.The drifting sand flux intensity over gobi is weaker but the mean movement velocity of sand grains is much faster.Thus,the energy accumulation of drifting sand flux over gobi is stronger.

Key words: Drifting sand, Gobi, Sand grain movement, Drift sand structure