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Sediment Resuspension and Deposition from Flooding Associated with Hurricane Floyd: A Rapid Response Proposal

Sediment Resuspension and Deposition from Flooding Associated with Hurricane Floyd: A Rapid Response Proposal
与飓风弗洛伊德相关的洪水引起的沉积物再悬浮和沉积:快速响应提案
批准号:
0000336
负责人:
John Wells
金额:
$2.12万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1999
资助国家:
美国
项目状态:
已结题
起止时间:
1999-11-15 至 2001-10-31

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中文摘要
翻译
建议为一项快速反应提案提供资金,以研究9月中旬飓风弗洛伊德和随后并横跨北卡罗来纳州海岸的洪水造成的沉积学后果。有两个问题需要解决:1)一场100-500年的洪灾事件会在外滩屏障上留下什么样的沉积特征?以及,2)河口地区是否普遍存在从临时储存的细粒新近沉积物中动员起来?了解沉积累积和再活化过程不仅对于沉积物和金属及有机污染物的固定,而且对于养分的储存和释放都是重要的。这项研究提供了一个独特的机会来回答与主要风暴对沉积物的封存和再悬浮/再沉积有关的一些更重要的问题。
英文摘要
Funding is recommended for a Rapid Response Proposal to study the sedimentological aftermath of the mid-September Hurricane Floyd and the flood that followed and crossed the coast of North Carolina. Two questions are to be addressed: 1) What kind of sedimentary signature does a 100-500 year flooding event leave behind the Outer Banks barrier inslands? and, 2) Is there widespread mobilization of fine-grained recent sediments from temporary storage in estuarine areas? Sedimentary accumulation and remobilization processes are important to understand not only for the sequestration of sedimens and metallic and organic pollutants, but also for nutrient storage and release. The study provides a unique opportunity to answer some of the more important questions related to sequestration and resuspension/redoposition of sediments by major storms.
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