CAJ | 학술논문

沙漠是近地层沙尘物质的重要来源之一,沙漠地区近地层水平输送的沙尘物质随高度的变化特征和不同高度处的沉降量直接影响着沙尘的输送过程. 选择腾格里沙漠东南缘流动沙丘区的风沙科学观测场为研究区,利用沙尘水平通量采集器和降尘测量器对近地层约50 m的不同高度水平运动的沙尘和降尘进行了近2年的观测,对沙漠地区近地层水平运动的沙尘随高度变化特征及不同高度的降尘量进行了讨论. 结果表明:沙尘的水平通量和降尘量均随高度的增加而减小,二者与高度均可表示为指数函数的关系; 同时,沙尘水平通量与降尘量之间存在正相关关系,二者可用线性函数相互转换.
사막시근지층사진물질적중요래원지일,사막지구근지층수평수송적사진물질수고도적변화특정화불동고도처적침강량직접영향착사진적수송과정. 선택등격리사막동남연류동사구구적풍사과학관측장위연구구,이용사진수평통량채집기화강진측량기대근지층약50 m적불동고도수평운동적사진화강진진행료근2년적관측,대사막지구근지층수평운동적사진수고도변화특정급불동고도적강진량진행료토론. 결과표명:사진적수평통량화강진량균수고도적증가이감소,이자여고도균가표시위지수함수적관계; 동시,사진수평통량여강진량지간존재정상관관계,이자가용선성함수상호전환.
Deserts are a main source of dust storms in the surface layer,and aeolian dust transport processes are closely related to the variation with height of near-surface horizontal and deposition dust flux.This paper discusses the variation with height of horizontal dust flux and dustfall within 50 m above the ground surface based on about two-year observations of mobile sand dunes in the southeastern Tengger Desert by horizontal aeolian dust samplers and dustfall gauges.It is revealed that both horizontal aeolian dust flux and dustfall amount decay exponentially with height,and the horizontal aeolian dust flux and dustfall amount are linearly and positively correlated.