Remote Sensing of Chlorophyll in Matagorda Bay and Surroundings Claire G. Griffin GIS in Water Resources Fall 2010.

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Remote Sensing of Chlorophyll in Matagorda Bay and Surroundings Claire G. Griffin GIS in Water Resources Fall 2010

Outline Utility of Remote Sensing for Water Quality Data Matagorda Bay Data Image Processing Mapping Chlorophyll Implications

Chlorophyll

Remote Sensing of Water Quality Location-specific, empirical algorithms Continuous data, spatially explicit maps, access to remote areas

Matagorda Bay 3 rd largest estuary Connected to Lavaca and Tres Palacios Bays Lavaca River and Colorado River

Data Chlorophyll from TCEQ and TCOON 70 sites ▫20 corresponded with Landsat scenes 17 Landsat Scenes

Image Processing Download from USGS Window to include only Matagorda Bay Atmospheric Correction

Mapping Chlorophyll Extract reflectances from Landsat data Regress combinations of bands against Chl-a Apply best algorithm to Landsat imagery Validate with data from other dates

Implications and Uses Monitoring potential Tracking change Relating to watershed characteristics From Arismendez et al. (2009)

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