TGLO Establish Historical Long-term Wetland Boundary Evolution Through Satellite Imagery

Abstract

<p>This dataset includes wetland erosion rates for West Galveston, Matagorda, and San Antonio Bay. Long-term trends in wetland boundary changes are estimated using Landsat satellite imagery. Sections of the wetland experiencing the highest rates of erosion will be further investigated through CubeSat satellite observations. The format of the data is summarized as follows</p><p>(1) Landsat based wetland evolution results from 1984 to 2020</p><ul><li>The Annual and seasonal water occurrence (in gif format)</li><li>The wetland change map (in TIF format)</li></ul><p>(2) CubeSat based wetland evolution results from 2009 to 2020</p><ul><li>Water occurrence maps from 2009 to 2021 for the RapidEye based bi-annual results (FSX-occurrence-yyy1-yyy2.tif) and the PlanetScope based annual results (FSX-occurrence-yyy1.tif), where yyyy represents the given year. The legend image is 'occurrence-cbar.jpg'</li><li>Erosion maps based on the difference between water occurrence mapping in 2009 and 2021: ('FSX-occurrence-diff-2021-2009.tif'). The legend is 'occurrence-diff-cbar.jpg'</li><li>The  0.2-meter bed counter line images based on the water occurrence maps and the tide elevation threshold from 2017 to 2021: (FSX-bed-yyy1.tif). Again, yyy1 represents the given year. The legend is 'color-bed.jpg</li><li>The difference between the beds in the 0.2-meter bed counter line images  in 2017 and 2021 at FS-1, FS-2, FS-3, and FS-4: (FSX-bed-diff-2021-2017.tif). The legend is 'color-bed-dif.jpg'</li></ul><p>(3) Analysis of wetland boundary evolution and erosion rate</p><ul><li>Landsat based Wetland erosion rate from 1984 to 2020 and CubeSat erosion rate from 2009 to 2021 (data format in ArcGIS shapefile)*</li><li>Landsat based coastlines in 1984, 2000, 2010, and 2020*</li><li>* The dataset also shown on the Coast Atlas website (<a href="https://www.texascoastalatlas.com/bayatlas/index.html">this link</a>)</li></ul><p> </p><p> </p><p> </p&gt