Date of Award

4-2015

Document Type

Poster Session

Department

Geographic Information Systems

First Advisor

Firoozi Pavri

Keywords

Remote Sensing, Mineral Leeching, Landsat Data, Mineral Washing

Abstract

Satellite data on Earth's surface provide a wealth of information on landscape conditions. I use Landsat data to determine an important geologic process that influences the composition of the soils. My project focusses on the experimental hypothesis that we can use plant vigor as a proxy to document mineral washing downslopes through soils. I constructed a Normalized Difference Vegetation Index (NDVI) composite image from Landsat data to help assess vegetation heath in my target location - a national park south of Mount St. Helens. This location was selected because of its steep inclines, dense undisturbed vegetation, and fertile soils. It is my hypothesis that as water trickles down through the soil it picks up and moves the dissolvable minerals downslope, therefore providing more minerals that aid vegetation growth and vigor at the bottom of the slopes. The NDVI analysis presented here provides data that can be used in a more detailed analysis of the same.

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