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In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historically using a variety of methods. Traditional definitions require a topographic map to show both ...
The US has the 2nd largest Exclusive Economic Zone of 11,351,000 km 2 (4,383,000 sq mi). By total area ( water as well as land), the United States is either slightly larger or smaller than the People's Republic of China, making it the world's third or fourth-largest country.
A geographic coordinate system ( GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [1] It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others.
The World Geodetic System ( WGS) is a standard used in cartography, geodesy, and satellite navigation including GPS. The current version, WGS 84, defines an Earth-centered, Earth-fixed coordinate system and a geodetic datum, and also describes the associated Earth Gravitational Model (EGM) and World Magnetic Model (WMM).
The geography of Antarctica is dominated by its south polar location and, thus, by ice. The Antarctic continent, located in the Earth 's southern hemisphere, is centered asymmetrically around the South Pole and largely south of the Antarctic Circle. It is washed by the Southern (or Antarctic) Ocean or, depending on definition, the southern ...
Greenland. Outline map of Greenland with ice sheet depths. (Much of the area in green has permanent snow cover, but less than 10m (33ft) thick.) Geography. Location. Between the Arctic Ocean and the North Atlantic Ocean. Coordinates. 64°10′N 51°43′W. / 64.167°N 51.717°W / 64.167; -51.717.
Map showing the location of Washington, D.C. in relation to its bordering states of Maryland and Virginia Washington, D.C. is located in the Mid-Atlantic region of the United States at 38°53′42″N 77°02′11″W / 38.89500°N 77.03639°W / 38.89500; -77.03639 , the coordinates of the Zero Milestone , on The Ellipse
The geography of the European Netherlands is unusual in that much of its land has been reclaimed from the sea and is below sea level, protected by dikes. It is a small country with a total area of 41,545 km 2 (16,041 sq mi) [1] and ranked 131st. With a population of 17.4 million [2] and density of 521/km 2 (1,350/sq mi) makes it the second most ...