Chloropleth maps
I chose this map to explore the uses of a chloropleth map. The map shows the prevalence of HIV (non-AIDS) in the state of Georgia and surrounding areas. Chloropleth maps utilize color spectrums to visually depict variables over a geographic region. This map uses a mutli-spectrum color progression from green to red to depict severity. In this image, the results are stunning and very easy to decipher. The urban metropolitan area around Atlanta has a high prevalence, which comes as little surprise, but also in the mid-south of Georgia rates are also high.
Dot Density Maps
Depicted above is a different type of map depicting Georgia. This map can be considered a type of dot destiny map. Dot density maps are qualitative maps and give reference for spacial distribution. I chose this map it helps illuminate some of the findings in the first map. We can now see that the HIV rates roughly correspond with population density in different areas of Georgia.
Topographic Maps
I chose this map to use for exploration of topographic maps and their uses. This map is an Elevation Map of Georgia that incorporates elements of a chloropleth map. This map clearly shows the Fall Line, which runs from Columbus GA through just north of Macon heading northeast. This divides the state into two very distinct eco-regions and is responsible for the change in scenery as you drive north.
Environmental Sensitivity Map
This last map that I have selected illustrates an environmental sensitivity map. The map depicts the USDA plant hardiness zones for Georgia, which shows how resistant plants of the different regions fair to extreme cold or heat. This is particularly interesting when looking viewed in conjunction with the topographic map above. It shows how plants have adapted to their niches. Environmental sensitivity maps are useful in informing policy and environmental health and protection.
