Dot Distribution Map

http://blog.chicagohistory.org/index.php/2012/02/segregation-in-chicago/

A dot density map is a type of map that uses dot symbols to show the presence of a feature or phenomenon.  Dot maps rely on a visual scatter to show spatial pattern.  The map above is of specific areas of segregation in Chicago.  These ethnic divides are shown by different colored dots.  Red dots symbolize Caucasion, blue is for African Americans, green is for Asian, orange is Hispanic and gray is other.

Choropleth Map

http://my.ilstu.edu/~jrcarter/Geo204/Choro/Tom/

McGraw-Hill Science & Technology Dictionary defines choropleth mapping as a map showing the distribution of a phenomenon, usually using various colors.  Color gradiations are correlated to the density per unit area of the phenomenon.

The map above displays the percentage of people in Florida that are Hispanic in each specific county based on the Census data 12 years ago.  These unequal groups are shown through different shades of green which darkens as the percentage increases.

Proportional Circle Map

http://www.neiu.edu/~nerobert/Cartography.htm

A proportional circle map scales circle area to the total value for a geographic area on a map.  As seen in the map above of the western United States, there are proportional circles visible to illustrate the Indian population of each state.  The information was derived from the Census Bureau of 1990.

Cartogram Map

http://bigthink.com/ideas/21146

A cartogram map is a mapping variable which substitutes thematics for land area.  It is essentially a distorted map which exaggerates and/or shrinks countries during its substitution process.  In the above distorted view f the world, we see that the actual cartography is altered when attempting to demonstrate the proportion with each country’s size weighted to reflect the size of the population.

Statistical Map

http://mappery.com/United-States-Travel-Time-to-Work-Statistical-Map

A statistical map is a special type of map in which the variation in quantity of a factor such as rainfall, population, or crops in a geographic area is indicated.  The map above demonstrates the estimated travel time to work in the United States.  Colors range from green as the quickest, to a deep red signifying the longest.

Infrared Aerial Photo Map

http://sofia.usgs.gov/publications/fs/2004-3016/

Aerial photographs can be taken either vertically an each photo consists of several bands.  Infrared colors include red, green and blue light.  The map above is a color infrared image from an aerial angle of the southern points of Florida.  The study point is highlighted with red, depicting the Everglades.

Doppler Radar

http://maxmayfieldshurricaneblog.wordpress.com/2009/08/24/17-years-after-hurricane-andrew/

Doppler radar uses the Doppler effect to measure velocity.  The above image if displayed courtesy of the National Weather Service Radar Image during Hurricane Andrew.  This Miami based report depicts wind speeds that devastated South Florida.