Wetland Sedimentation from Hurricanes Katrina and Rita-Reference-Cited by-同舟云学术

Wetland Sedimentation from Hurricanes Katrina and Rita

Published:2006-10-20 Issue:5798 Volume:314 Page:449-452
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Turner R. Eugene¹²,Baustian Joseph J.¹²,Swenson Erick M.¹²,Spicer Jennifer S.¹²

Affiliation:

1. Coastal Ecology Institute, Louisiana State University, Baton Rouge, LA 70803, USA.

2. Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803, USA.

Abstract

More than 131 × 10 6 metric tons (MT) of inorganic sediments accumulated in coastal wetlands when Hurricanes Katrina and Rita crossed the Louisiana coast in 2005, plus another 281 × 10 6 MT when accumulation was prorated for open water area. The annualized combined amount of inorganic sediments per hurricane equals (i) 12% of the Mississippi River's suspended load, (ii) 5.5 times the inorganic load delivered by overbank flooding before flood protection levees were constructed, and (iii) 227 times the amount introduced by a river diversion built for wetland restoration. The accumulation from hurricanes is sufficient to account for all the inorganic sediments in healthy saltmarsh wetlands.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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