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Thus the state plane coordinate system is still useful. Originally, the state plane coordinate systems were based on the North American Datum of 1927 (NAD27). Later, the more accurate North American Datum of 1983 (NAD83) became the standard (a geodetic datum is the way a coordinate system is linked to the physical Earth). More recently there ...
Evros was established as a prefecture in 1930 (Greek: Νομός Έβρου), when the former Thrace Prefecture was divided into the Rhodope and Evros prefectures. [3] As a part of the 2011 Kallikratis government reform, the prefecture was transformed into a regional unit within the East Macedonia and Thrace region, with no change in its boundaries.
To improve the National Spatial Reference System, NAD 83, along with North American Vertical Datum of 1988 (NAVD 88), are set to be replaced with a new geometric reference frame and geopotential datum based on global navigation satellite systems (GNSS), such as the Global Positioning System (GPS), and new gravimetric geoid model, potentially in ...
Maritsa or Maritza (Bulgarian: Марица [mɐˈrit͡sɐ]), also known as Evros (Greek: Έβρος) and Meriç (Turkish: Meriç), is a river that runs through the Balkans in Southeast Europe. With a length of 480 km (300 mi), [ 3 ] it is the longest river that runs solely in the interior of the Balkan peninsula , and one of the largest in ...
The NSRS consists of a National Shoreline, the NOAA CORS Network [2] (a system of Global Positioning System Continuously Operating Reference Stations), a network of permanently marked points, and a set of models that describe dynamic geophysical processes affecting spatial measurements. The system is based on the datums NAD 83 and NAVD 88. [3]
Each state has its own set of reference parameters given in the standard. [8] The U.S. National Geodetic Survey's "State Plane Coordinate System of 1983" uses the Lambert conformal conic projection to define the grid-coordinate systems used in several states, primarily those that are elongated west to east such as Tennessee.
Recent editions of these maps (those referenced to the North American datum of 1983, or NAD83) are compatible with USNG, and current editions also contain a standard USNG information box in the collar which identifies the GZD(s) (Grid Zone Designator(s) and the 100 km Grid Square ID(s) covering the area of the particular map. USNG can now be ...
This is a list of streams and rivers in the U.S. state of Florida.With one exception, the streams and rivers of Florida all originate on the Coastal plain.That exception is the Apalachicola River, which is formed by the merger of the Chattahoochee River, which originates in the Appalachian Mountains, and the Flint River, which originates in the Piedmont.