Types of Maps & Topography

CHOROPLETH

            Here we have a Choropleth map. In this map we find different shadings and colorings. These shadings, as you can see, are delegated and confined with in state boundaries. And represent certain average values or quantities of a certain aspect of the state. For instance, in this Choropleth map of the U.S, the percentage of people below the poverty line is given. And as the legend shows, the darker the shading, the greater the percentage of people in poverty.

ISARITHMIC

Next, this is an Isarithmic map. This map is used to illustrate smooth and ongoing occurrences such as temperature, or even rainfall. Notice that the shadings on this map are not confined to each and every state but rather regions. This is because the objective of this map is not to compare the data of each state. Therefore in this Isarithmic map of the U.S, the average annual temperature is measured for the summer and the winter.

DOT DENSITY

            The map above represents a dot density map, which is used to show the intensity of the presence of a certain feature. Here we have the depiction of tobacco agriculture in the United States in 2002. The increase of dots represents higher tobacco growth and interestingly this growth still seems to be represented by the states in the east: Virginia, Tennessee, Georgia. I guess history does repeat himself. So much for progress.

           

PROPORTION SYMBOL

            The last type of map that will be discussed in this blog is the proportion symbol map. This map conveys a certain set of data within a certain location. The map above clearly depicts this, because the data being measured here is forestry production. Secondly, the dot, which represents the map symbol, is used to signify the amount of forestry production in European countries according to its size. In the map's legend there are four different sizes.

Topographical Contour Line of Georgia And Water Spout

Finally this is the topographical contour line of Georgia (red) and its water spout(yellow).

 As you can see the contour lines begin to take this sort of right angular shape as the elevation increases. Consequently the water spouts get wider with the increase of elevation. This I believe, stems from the fact that most of Georgia's Highest mountains are in the northeastern part of the state. Sort of tucked in the corner as represented in this  website. This would also make sense especially when we look at the previous blog and realize Stone Mountains contour lines are in circular patterns. This is definitely interesting to look at Georgia's contour lines in a wider scope.