摘要
通过对塔克拉玛干沙漠中部部分地区的气象资料分析、野外实地风沙观测和理论计算 ,对其风沙环境特征作出了一些初步分析。结果表明 :沙漠边缘地区年起沙风时间数在 2 70× 10 4 min左右 ,输沙总量为 3 80 0kg·m-1·a-1,年输沙总量与合成输沙总量的比值在 1 83～ 2 39之间变化。而沙漠腹地塔中地区年起沙风时间数在 4 6 1× 10 4 min以上 ,输沙总量为 6 10 0kg m-1 a-1,最大输沙量为 80 0 0kg·m-1·a-1。年总输沙量与合成输沙量的比值在 1 38～ 2 12之间变化。此外 ,其沙丘形态与Tomas( 1991)所阐述的沙丘发育格局与模式并不完全吻合 。
With the adverse circumstances, the characteristics of blown sand environment in the hinterland of the Taklimakan Desert up to now can not be acknowledged on the basis of the quantitative analysis. This paper, through the analysis on meteorological elements, the observations in field and the calculations, analyzed the characteristics of the blown sand environment in this area, and founded the equations of the sand transport. The results show that on the edge of the desert, the effective wind was 2 70×10 4 min annually, and the effective wind formed with broadly modal regimes. The total sand transport was \{5 500\} kg\5m -1 \5a -1 . While in the hinterland of the desert, there formed effective winds that with unimodal. The effective wind annually arrived at 4 61×10 4 min, the total sand transport was \{8 700\} kg\5m -1 \5a -1 , and the maximum was \{11 000\} kg\5m -1 (1997\|06 to 1998\|05). Furthermore, the morphodynamics of dunes were not unified completely to the modes that Tomas expressed in 1991. And also there are divergences with the declarations Coral.S.Breed claimed on Taklimakan Desert.
出处
《中国沙漠》
CSCD
北大核心
2001年第1期56-61,共6页
Journal of Desert Research
基金
中国科学院"百人计划"---风沙物理学资助
