Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41302146 |
| 巴丹吉林沙漠高大沙山形态特征及其演化过程的数字模拟研究 | |
| 张德国 | |
| 主持机构 | 中国科学院地质与地球物理研究所 |
| 开始日期 | 2014 |
| 结束日期 | 2016 |
| 资助经费 | 250000(CNY) |
| 项目类别 | 青年科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | The processes of formation and development of the giant dunes (megadunes) are quite complex. The morphological features (angles and secondary dunes of stoss and lee sides; length, shape and strike of the dune crests, etc.) of mega-dunes are not only the result of the long-term effects of complex wind regimes, but also strongly impacted by various other parameters. Earlier studies suggested that mega-dunes was potentially formed by wind regimes, climate changes, underlying reliefs and/or availability of groundwater. However, an unambiguous interpretation of the formation and development of the mega-dunes' morphological features is still not available. The research target of this project will be the morphological natures of the magadunes in the Badain Jaran Desert, western Inner Mongolia. Numerical simulation will be applied as the main research method, supported by the analysis of meteorological data, remote sensing data, topographic surveying in the field and sedimentological analysis of sand samples. We plan to focus on the formation processes and development of the mega-dunes' morphological features under the impact of the complex wind regimes and underlying reliefs. This research outcome will be further applied to interpret Quaternary changes of wind regimes and earlier impacts of underlying landforms on the dune stratigraphy. The implementation of the project will not only lead to new understanding and knowledge about the formation and development of the mega-dunes' morphological features, but also provide important evidence for understanding the Quaternary climate changes and paleogeomorphological environment in the Alashan Plateau. |
| 中文关键词 | 巴丹吉林沙漠 ; 高大沙山 ; 下伏地形 ; 复杂风况 ; 数字模拟 |
| 来源机构 | 中国科学院地质与地球物理研究所 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346699 |
| 推荐引用方式 GB/T 7714 | 张德国.巴丹吉林沙漠高大沙山形态特征及其演化过程的数字模拟研究.2014. |
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