MIND MAPS

https://www.e-education.psu.edu/geog486/book/export/html/1796

Mind maps are a type of mental maps and are a way to map a subject for brainstorming or a review tool starting a central location to how objects and thoughts connect and/or relate with each other. In the above image the 200 most popular websites of 2007 are mapped on the subway map for Tokyo based on their popularity, success, number of hits, etc.

CONTINUOUSLY VARIABLE PROPORTIONAL CIRCLE MAP

https://www.e-education.psu.edu/geog486/book/export/html/1796

A continuously variable proportional circle map is a variation of the proportional circle map. What makes this type of map different is that multiple variables are or may be represented on the varying size circles. The above image is an example of this as the size of the circle depends on how much meat those regions of France sent to the butchers in Paris. Those circles are then divided similar to a pie chart to represent what type and percentage of meat was sent to the butchers in Paris.

PROPAGANDA MAPS

http://drawn.ca/archive/satirical-european-maps-of-wwi/

Propaganda maps are an example of a mental map where one entity is attempting to influence and alter the beliefs of another to gain their support. The above is a satirical map of Europe depicting different stereotypes of the regions with what was occurring during WWI.

CARTOGRAM

http://www.ncgia.ucsb.edu/projects/Cartogram_Central/gallery.html

A cartogram is a type of thematic map that uses a variable to distort the normal projection of the map. In this cartogram the size and shape of the states is altered based on the winner of that state's percentage of popular votes from the 1996 election.

THEMATIC MAP

http://www.usna.usda.gov/Hardzone/

Thematic maps are a surface map that portrays a particular theme of the area being mapped. In the image above the Department of Agriculture uses a thematic map to show the hardiness zones for plants for all 50 states.

RADAR IMAGES

http://www.history.noaa.gov/stories_tales/radar.html

RADAR images are developed from transmitting radio waves are then reflected back to an antenna that measures the time and distance of the returning pulses the object they interacted with. The above image is of an early RADAR image from 1944 of an approaching frontal boundary. Until this point RADAR was primarily used by the military.

SONAR IMAGES

http://oceanexplorer.noaa.gov/explorations/04gmss/media/sonar_u166.html

SONAR imaging involves transmitting sound waves through the water that are reflected back to sensors to develop an image of what it is scanning. As a current Navy Submariner I am very familiar with SONAR and its uses. The above is a side SONAR scan of the wreckage of an old German U-Boat on the bottom of the ocean floor.