Trace Metals and Fluvial Response Rates

痕量金属和河流响应率

• 批准号: 8904352
• 负责人: James Knox
• 金额: $ 10.89万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-08-01 至 1992-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8904352&HistoricalAwards=false
• 关键词: Trace; Metals; Fluvial; Response; Rates

The general objective of the proposed research is to use lead and zinc trace metals derived form point sources of known historical ages to quantify and model erosional and depositional effects of floods and the long-term downstream transport of sediment and trace metals. The research addresses the long-standing problem that little previous quantitative data has been available to document the sensitivity of sediment storage at various time scales and geographic locations in drainage systems. The proposed research will quantify response rates and processes that describe the movement and storage of sediment under varying time scales and flood events. Results from the modeling and quantification of the long-term fate of lead and zinc metals in floodplain sediment of the study area should serve as a general model to further understand the long-term behavior of many toxic substances that are associated with water transported sediment.

拟议研究的总体目标是使用铅和 锌痕量金属来源于已知历史的点源 年龄来量化和模拟侵蚀和沉积影响 洪水和沉积物的长期下游迁移， 微量金属 这项研究解决了长期存在的问题， 以前的定量数据很少， 记录不同时间沉积物储存的敏感性 排水系统的规模和地理位置。 的 拟议的研究将量化响应率和过程， 描述了不同时间泥沙的运动和储存情况 规模和洪水事件。 建模的结果和 铅和锌金属的长期归宿的量化 研究区的洪泛区沉积物应作为一个一般的 模型，以进一步了解许多有毒物质的长期行为， 与水输送沉积物有关的物质。