Global S&T Development Trend Analysis Platform of Resources and Environment
项目编号 | 1803056 |
Collaborative Research: P2C2: Extreme floods on the lower Mississippi River in the context of late Holocene climatic variability | |
Jeffrey Donnelly | |
主持机构 | Woods Hole Oceanographic Institution |
项目开始年 | 2018 |
2018-06-01 | |
项目结束日期 | 2021-05-31 |
资助机构 | US-NSF |
项目类别 | Standard Grant |
项目经费 | 243861(USD) |
国家 | 美国 |
语种 | 英语 |
英文摘要 | The Mississippi River plays a fundamental role in the economy of the United States, and flooding along its course is costly in both economic and social terms. Historic flooding of the lower Mississippi in 2011 caused over $3 billion in agricultural losses and damage to infrastructure, with additional losses to flooding occurring again in 2016 and 2018. Seasonal and longer-term predictions of flooding along the Mississippi and its major tributaries remain a major challenge because the effects of climate variability, greenhouse forcing, and human modifications of the river are difficult to disentangle using short records from gauging stations that span less than 150 years. This project will develop records describing the timing and magnitude of flooding across the Mississippi River basin over the last millennium, and use these records to understand the influence of climate variability on flood activity. This work will improve predictions of flooding along the Mississippi River, a hazard that affects millions of people. The findings will be useful for planned and ongoing efforts to slow coastal land loss in the Mississippi River delta. The project will engage students at three institutions in research, and its findings will be disseminated to the public through an exhibit at the Mississippi River Museum and Aquarium. The goal of this project is to reconstruct the frequency and magnitude of overbank floods along the lower Mississippi River and its major tributaries over the last millennium using the sedimentary archives preserved in oxbow lakes. Our ability to create this novel hydrological record is due to recent developments in paleoflood hydrology that demonstrate the unique ability of floodplain lake sediments to record individual flood events and their associated magnitude. Once developed, our reconstructions will be used to characterize decadal- to centennial-scale variability of flood activity, to compare with simulated discharge extremes in climate model ensembles, and to identify the regional and hemispheric circulation patterns associated with increased likelihoods of extreme floods on the lower Mississippi River and its major tributaries. This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria. |
文献类型 | 项目 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/72684 |
专题 | 环境与发展全球科技态势 |
推荐引用方式 GB/T 7714 | Jeffrey Donnelly.Collaborative Research: P2C2: Extreme floods on the lower Mississippi River in the context of late Holocene climatic variability.2018. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Jeffrey Donnelly]的文章 |
百度学术 |
百度学术中相似的文章 |
[Jeffrey Donnelly]的文章 |
必应学术 |
必应学术中相似的文章 |
[Jeffrey Donnelly]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论