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Rethinking the Mississippi River Diversion for Effective Capture of Riverine Sediments : Volume 367, Issue 367 (03/03/2015)

By Jun Xu, Y.

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Book Id: WPLBN0003990924
Format Type: PDF Article :
File Size: Pages 8
Reproduction Date: 2015

Title: Rethinking the Mississippi River Diversion for Effective Capture of Riverine Sediments : Volume 367, Issue 367 (03/03/2015)  
Author: Jun Xu, Y.
Volume: Vol. 367, Issue 367
Language: English
Subject: Science, Proceedings, International
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2015
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Xu, Y. J. (2015). Rethinking the Mississippi River Diversion for Effective Capture of Riverine Sediments : Volume 367, Issue 367 (03/03/2015). Retrieved from http://nationalpubliclibrary.info/


Description
Description: Louisiana State University and LSU Agricultural Center, School of Renewable Natural Resources, Baton Rouge, USA. Many river deltas in the world are vibrant economic regions, serving as transportation hubs, population centres, and commercial hotspots. However, today, many of these deltaic areas face a tremendous challenge with land loss due to a number of factors, such as reduced riverine sediment supply, coastal land erosion, subsidence, and sea level rise. The development of the Mississippi River Deltaic Plain (MRDP) in southeast Louisiana, USA, over the past century is a good example. Since 1932, approximately 4877 km2 of the coastal land of MRDP has become submerged. The lower Mississippi River main channel entering the Gulf of Mexico has become an isolated waterway with both sides losing land. In contrast, large open water areas in the Mississippi River’s distributary basin, the Atchafalaya River basin, have been silted up over the past century, and the river mouth has developed a prograding delta feature at its two outlets to the Gulf of Mexico. The retrospective analysis of this paper makes it clear that the main cause of the land loss in the MRDP is not the decline of riverine sediment, but the disconnection of the sediment sources from the natural flood plains. Future sediment management efforts in the MRDP should focus on restoring the natural connection of riverine sediment supplies with flood plains, rather than solely using channelized river diversion. This could be achieved through controlled overbank flooding (COF) and artificial floods in conjunction with the use of a hydrograph-based sediment availability assessment.

Summary
Rethinking the Mississippi River diversion for effective capture of riverine sediments

 

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