DRG

www.goldensoftware.com/.../Issue50Sgps.shtml

DRG is abbreviated for Digital Raster Graphic and is a scanned image of a US geological survey. The map itself is georeferenced to the surface of the Earth.The above map is of a Vail pass quad survey from a fish and wildlife website.

Isopleth Map

www.volcano.si.edu/world/volcano.cfm?vnum=080...

Isopleth show a third dimension by connecting a series of equal lines called isopleths. The third dimension may be surface elevation, precipitation, atmospheric pressure, and other measurements as well. The map above shows data from the Miyaki-jima volcano eruption in Japan in 2000.

Isopach Map

www.gomr.mms.gov/.../whatsnew/papers/gp9509.html

An Isopach is map of the thickness variation of a certain unit from an aerial view. The map above is of the Gulf of Mexico off of Florida's west coast. The map shows the sea bed of the Gulf of Mexico and the thickness of the reefs. The map comes from a website that has different maps Isopach maps of the same area showing different types of sea bed information.

Isohyet Map

oldpage.tfri.gov.tw/book/2000/5e.htm

An Isohyet is a line drawn on a weather map connecting points that receive equal amounts of precipitation during a certain period of time. The above map is of Taiwan and shows rainfall amounts using isohyets. The maps purpose is to show how hard it is to conserve water because of the uneven temporal.

Isotachs

weather.cod.edu/help/mchelp.html

Isotachs are lines that connect points of equal wind speeds on a surface. The closeness of the lines of the isotachs correlates to how intense the wind speeds are. this is a map of the United States that shows heights and isotachs.

Isobars

www.newmediastudio.org/.../Closed_Isobars.html

An Isobar is a line that is drawn on a weather map to connect points of equal pressure. This map displays close isobars around a low pressure cell. Isobars are a way to describe air pressure.

Lidar Map

www.csc.noaa.gov/products/nchaz/htm/intro.htm

Lidar data is remotely sensed data that is detected using Lidar equipment. They are usually collected with mounted laser on aircraft's and can document topographic change on the land and water below. This is an image over Wrightsville Beach in 1997.