Louisiana Coastal Remote Sensing Research
PI : Prof Nan Walker
The Louisiana coastal ocean receives discharges from the Mississippi and Atchafalaya Rivers, through the bird-foot delta and through Atchafalaya Bay. In
addition, river diversions have been built to re-introduce river waters and sediments into coastal bays, lakes and wetland areas. Funding from NASA and NOAA
are being used to develop remote sensing tools for the study of processes related to these river inputs including sediment transport, algal blooms and hypoxia
along the coast. In support of coastal research and management, a range of real-time satellite image products from MODIS, OCM, and NOAA AVHRR have been
developed and are accessible below. Publications of interest include Walker (1996), Walker and Hammack (2000), Walker (2001) , Myint and Walker (2002), Walker et al. (2005), Walker (2005).
River Deltas of the World: a baseline and changes
P.I.s : Profs. Oscar Huh and James Coleman
Coincident with the launching of the Earth Observing System is the accumulation
of more than 21 years of earth observations by the Landsat spacecraft, which
delivers images from the multispectral Thematic Mapper at 30m resolution.
This archival record encompasses two decades of change on these dynamic land
forms.
more...
Image Archives of Interest
AVHRR Image Products
MODIS True Color Archive
OCM Chlorophyll Imagery
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Synthetic Aperture Radar for Coastal Flood Mapping
PI: Prof Nan Walker
Hurricane-induced storm surges, waves, and rain can all contribute to widespread coastal flooding, particularly in low relief areas such as southeast
Louisiana. The Synthetic Aperture Radar (SAR) on the Radarsat-1 provides a powerful source of data for mapping flooding as it is unaffected by cloud cover and
usable both day and night. In 2003, we began collaborating with researchers at NOAA NESDIS, Camp Springs, MD. (through the ADRO II project) and gained access
to many SAR images of coastal Louisiana during the two week episode when Tropical Storm Isidore and Hurricane Lili impacted coastal Louisiana's water
levels. More recently, SAR imagery and SPOT multi-spectral imagery were employed in the study of coastal flooding from Hurricane Katrina. Our initial results
have been published (Kiage et al., 2005). Funding for this research has been provided mainly by the Louisiana Board of Regents.
Published figures in the final paper:
Flooding of New Orleans, SPOT and SAR MultiTemporal False Composite Image
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