Land Cover and Soil Properties of the San Marcos Basin

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Presentation transcript:

Land Cover and Soil Properties of the San Marcos Basin Cody McCann

Agenda 1. Study Area 2. NDVI and SAVI 3. Future Endeavors

The Good Ol’ San Marcos Subbasin

Raw Landsat Data Thermal Imagery DN: 8-bit, ranging from 0-255 Normal Imagery: Red, Green, and Blue Composite Bands

NDVI and SAVI Progress Diagram Conversion Radiance Reflectance Correction Calculate the Radiance from Landsat 7 Landsat 5 TM to Landsat 7 ETM+ Convert the Radiance into Reflectance Correct Reflectance Data

NDVI

Why SAVI? Low Vegetative Cover Different Soil Types Soil-Adjusted Vegetation Index Best used when: Low Vegetative Cover Different Soil Types Modification of NDVI

SAVI of the Subbasin

Direct Relation to Water

Direct Relation to Water

Relation to the Edwards Aquifer

Relation to the Edwards Aquifer

Future Endeavors Soil Brightness Soil and Land Cover Soil and Stream Network

Questions? Thanks! Dr. Maidment and Dr. Kilic

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