Processing Coastal Lidar Data
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Transcript of Processing Coastal Lidar Data
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Processing Coastal Lidar Data
Andrea Ryan
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Nueces River Delta “Persistently high salinity
concentrations severely inhibit[s] the function of the Nueces Delta” (Dunton et al). Data Collection for Model
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Lidar Data Received Data – 1m x 1m grid
Find coordinate system!
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Project Raster to 100m x 100m grid
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Rotating the Raster Why rotate the
raster?
1m x 1m grids
N
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Rotating the Raster
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Larger Grid Size100m x 100m grids
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Topography vs. Bathymetry
datum
elevation data
Topography:
*Datum is according to NAVD88 in this case
Bathymetry:datum
depth to sea floor
*Datum is water level
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Combining Topo-Bathy
The entire area is so flat it is difficult to tell where it is surface water & where it is land
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Coastal Lidar Mapping Applications Workshop San Antonio: November 15th & 16th
2009. Issues with specular reflection on
marshy areas Issues with wet/dry delineation Issues with MetaData & QA/QC
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TCOON Data
Associate Time Series for:-Water levels- Wind Speeds- Wind Directions
Texas Coastal Ocean Observation Network
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Precipitation Data
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Future Work
Collect salinity data from TCOON Collect streamflow data from USGS Meet with UT Center for Space
Research
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References http://lighthouse.tamucc.edu/TCOON Kenneth, Dunton H., Montagna A. Paul, Ward
H. George, and Whitledge E. Terry. Rincon Bayou Demonstration Project. Rep. Vol. I. Austin: Bureau of Reclamation, TX. Print.
maps.google.com NRC, Mapping the Zone: Improving Flood
Mapping Accuracy, The National Academies Press. Washington, D.C.
www.srh.noaa.gov/rcfshare/precip_download.php
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Questions?
11/24/2009