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Bimodal grain-size distribution of Chinese loess, and its palaeoclimatic implications
文献类型：期刊论文
| 作者 | Sun, DH ; Bloemendal, J ; Rea, DK ; An, ZS ; Vandenberghe, J ; Lu, HY ; Su, RX ; Liu, TS |
| 刊名 | CATENA
 |
| 出版日期 | 2004 |
| 卷号 | 55期号:3页码:325-340 |
| 关键词 | loess grain size atmospheric circulation China |
| ISSN号 | 0341-8162 |
| 通讯作者 | sundh@scsio.ac.cn |
| 中文摘要 | Grain-size analysis indicates that Chinese loess generally shows a bimodal distribution with a coarse and a fine component. The coarse component, comprising the main part of the loess, has pronounced kurtosis and is well sorted, which is interpreted to be the product of dust storms generated by low-altitude northwesterly winds. Its grain-size reflects the strength of the low-altitude circulation in the dust seasons of the year, and its percentage provides an indicator of the source area aridity and the frequency of dust storms. Conversely, the fine component has a wide grain-size range and is poorly sorted. Sedimentary illustrations based on the grain-size distribution characteristics of bulk samples and of detrital quartz suggest that the fine component probably represents the background dust load of the atmosphere and is mainly transported by high-altitude westerly airstreams. Its grain-size provides an estimate of the westerly air stream intensity. The coarse and fine components of a loess sample can be mathematically separated by fitting a designated mathematical distribution function to the measured grain-size data, and this procedure constitutes an approach for reconstructing the palaeowind system of Northern China. (C) 2003 Elsevier B.V. All rights reserved. |
| 学科主题 | Geosciences, Multidisciplinary; Soil Science; Water Resources |
| 收录类别 | SCI |
| 原文出处 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000188981300004 |
| 公开日期 | 2011-07-03 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/4832]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 推荐引用方式 GB/T 7714 | Sun, DH,Bloemendal, J,Rea, DK,et al. Bimodal grain-size distribution of Chinese loess, and its palaeoclimatic implications[J]. CATENA,2004,55(3):325-340. |
| APA | Sun, DH.,Bloemendal, J.,Rea, DK.,An, ZS.,Vandenberghe, J.,...&Liu, TS.(2004).Bimodal grain-size distribution of Chinese loess, and its palaeoclimatic implications.CATENA,55(3),325-340. |
| MLA | Sun, DH,et al."Bimodal grain-size distribution of Chinese loess, and its palaeoclimatic implications".CATENA 55.3(2004):325-340. |
入库方式： OAI收割
来源：南海海洋研究所
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