This series of maps shows several different band combinations that can be useful in locating potential sites. Landsat imagery from the USGS can be viewed in ways which reveal certain characteristics depending on the combination of bands. ArcMap Image Analysis and Processing tools are used to create combinations suitable for different purposes.
For example, the Landsat Band 8 is a high resolution panchomatic view, used here by itself to show the location of the Mirador pyramid. It can also be used to create a sharper composite image, using the Pan-sharpening option.
The Natural Color map shows a band combination that displays a color image to visualize data like a color photo using Bands 1,2 and 3, which show visible light. Band 1 distinguishes soil from vegetation, Band 2 is useful for showing which plants are stressed, and which are more healthy, and Band 3 is also used to highlight vegetation.
The False Color map uses Bands 2,3,and 4, adding the Near Infared which emphasizes biomass content. This band combination is most useful for the dense jungle where the Mirador pyramid is located because the red band (#3) indicates areas where chlorophyll is being absorbed, and the NIR band (#4) indicates areas of high refelectivity of plant materials. The NDVI(Normalied Difference Vegitation Index) tool is used to show relative biomass in the image.
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