FALLING DUST AND DEPOSITS IN ANTHROPOGENE ——Ⅰ: PRELIMINARY ANALYSES OF THE DUST FALL IN BEIJING ON APRIL 16~17, 2006
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摘要: 2006年4月中北京地区接连出现了强降尘过程。降尘,在地质学家的眼中被视为黄土的原始物质。对降尘过程以及降落物的研究无论对我们正确认识黄土的堆积和演化,或者人类活动对干旱区沙漠化的影响均有重要的理论和实践意义。本文着重介绍这次降尘的沙尘天气过程以及对降落物磁化率和粒度测量的初步结果。Abstract: Strong dust-falls occurred one after another in Beijing in the mid-April, 2006. The falling-dust seems to be identical to the raw material of loess from geologists point of view. The processes of dust falling and materials of falling-dust give us opportunity to better understanding the accumulation of loess and environmental influence of mankind to the desertification in arid to semi-arid areas. The preliminary magnetic susceptibility and grain size analyses of falling dust and the atmospheric background dealing with the dust storm on April 16~17, 2006 were presented in this paper.
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Key words:
- falling-dust /
- desert /
- Beijing /
- susceptibility /
- grain size
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