Mechanics of Downstream Fining in Long Reaches of Large, Low-Slope Sand-Bed Rivers

大型低坡度沙床河长段下游澄清机制

• 批准号: 0096916
• 负责人: Gary Parker
• 金额: $ 24.5万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-03-15 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0096916&HistoricalAwards=false
• 关键词: Mechanics; Downstream; Fining; Long; Reaches

AbstractCTS-0096916G. Parker, University of MinnesotaThe PI proposes to develop a numerical model to accurately predict the downstream fining of sediment in low gradient, sand-bed rivers. This phenomenon is very important in the understanding of river dynamics, long-term landscape evolution, and channel alteration. This model will account for key physical mechanisms occurring in the sediment transport process. Laboratory experimental results obtained at the University of Minnesota and at the Twente University will be used to validate the sediment transport models. Overall results will be compared to field test data obtained from rivers in Papua New Guinea and Argentina.

摘要CTS-0096916G。 Parker，明尼苏达大学 PI 建议开发一种数值模型，以准确预测低梯度沙床河流中沉积物下游的细化。 这种现象对于理解河流动力学、长期景观演化和河道变化非常重要。 该模型将解释沉积物输送过程中发生的关键物理机制。 明尼苏达大学和特温特大学获得的实验室实验结果将用于验证沉积物输送模型。 总体结果将与从巴布亚新几内亚和阿根廷河流获得的现场测试数据进行比较。