Eolian dust activity during the last similar to 850 years on the southeastern margin of the arid Central Asia
文献类型：期刊论文
| 作者 | Wu, Xudong; Li, Xiangzhong; Li, Junfeng; Wang, Min; Ji, Ming; Cao, Yunning; Hu, Jing; Zhang, Pu |
| 刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| 出版日期 | 2020 |
| 卷号 | 560 |
| 英文摘要 | Eolian dust activity studies on the arid Central Asia (ACA), one of the world's largest dust sources, are of great importance to the global climatic system. Grain size distributions (GSDs) can provide information on sediment sources, transport processes and sedimentary environments. As a result, GSD is the most frequently applied proxy in reconstruction of past eolian dust activities of the ACA using lake sediments. The GSD dataset for a core spanning the last similar to 850 years from Kuhai Lake on the northeastern Tibetan Plateau was unmixed by end-member analysis (EMA) for reconstruction of past eolian dust activities on the southeastern margin of the ACA. The results suggest that EM 2 and EM 3, which were added together to form an eolian dust activity proxy, represent the proximal eolian suspension and saltation loads, respectively. The fractional abundances of EMs suggest that siliciclastic materials in the studied core were mainly from eolian contributions. The occurrence of enhanced eolian dust activities within the cold Little Ice Age period together with the GSDs of EM 2 and EM 3 indicate that eolian dust activities on the southeastern margin of the ACA were basically governed by the Siberian High-produced Asian Winter Monsoon over the last millennium. At decadal to centennial scales, enhanced eolian dust activities generally correspond to warm periods with high total solar irradiance (TSI). Increased temperatures as the result of high TSI would have caused larger increases in evaporation than in precipitation, and hence deteriorated vegetation cover and increased dust sources availability. |
| 源URL | [http://159.226.73.51/handle/332005/20058]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Wu, Xudong,Li, Xiangzhong,Li, Junfeng,et al. Eolian dust activity during the last similar to 850 years on the southeastern margin of the arid Central Asia[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,560. |
| APA | Wu, Xudong.,Li, Xiangzhong.,Li, Junfeng.,Wang, Min.,Ji, Ming.,...&Zhang, Pu.(2020).Eolian dust activity during the last similar to 850 years on the southeastern margin of the arid Central Asia.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,560. |
| MLA | Wu, Xudong,et al."Eolian dust activity during the last similar to 850 years on the southeastern margin of the arid Central Asia".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 560(2020). |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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