摘要
通过对库布齐沙漠沙丘不同类型、不同部位沙粒的含水量、粒径结构、矿物组成分析，初步认为，库布齐沙漠沙鸣现象是由于落沙坡沙层在外力作用下，干沙层沙粒向下群体滑动、无数沙粒相互撞击产生声响，相近声频随着沙体的滑落不断迭加、扩大而形成，这种沙粒外力作用下的撞击声的共鸣，本质上与地质地貌构造无关，而与沙体含水量、粒径结构、矿物组成这些主要因子有关。
The mechanism about of sand ringing is discussed and the effects of sandzine,temperature,moisture content,mineral composition and dune type of kubuqi desert onsand ringing are studied in the paper.ResuIt show that innumerable sands run into oneselfgive rise to sand ringing while the sarids sped down the slope by outside force,because acous-tic frequency of similitude is superimposed.
关键词
沙鸣
沙粒撞击
声频迭加
sand ringing
sand dashed sand
superimposition of acoustic acoustic requen-cy
