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Nature. 2006 Jun 1;441(7093):587-8.

Space geodesy: subsidence and flooding in New Orleans.

Author information

1
Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida 33149, USA. tdixon@rsmas.miami.edu

Abstract

It has long been recognized that New Orleans is subsiding and is therefore susceptible to catastrophic flooding. Here we present a new subsidence map for the city, generated from space-based synthetic-aperture radar measurements, which reveals that parts of New Orleans underwent rapid subsidence in the three years before Hurricane Katrina struck in August 2005. One such area is next to the Mississippi River-Gulf Outlet (MRGO) canal, where levees failed during the peak storm surge: the map indicates that this weakness could be explained by subsidence of a metre or more since their construction.

PMID:
16738651
DOI:
10.1038/441587a

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