Publication of North American Datum of 1983 (2011) Epoch 2010.00, North American Datum of 1983 (PA2011) Epoch 2010.00 and North American Datum of 1983 (MA2011) Epoch 2010.00

Riepilogo

The National Geodetic Survey (NGS) has finalized the publication of new realizations of three geodetic references frames that have all carried the name of "the North American Datum of 1983" (or "NAD 83"). The new realizations are NAD 83 (2011) epoch 2010.00 [for the North America and Caribbean tectonic plates], NAD 83 (MA11) epoch 2010.00 [for the Mariana tectonic plate] and NAD 83 (PA11) epoch 2010.00 [for the Pacific tectonic plate]. These three realizations supersede all previous NAD 83 realizations, including CORS96, NSRS2007, PACP00 and MARP00, for all epochs prior to 2010.00 (January 1, 2010). This notice complements, but does not replace, the affirmation of NAD 83 as the official civilian horizontal datum for the United States surveying and mapping activities performed or financed by the Federal Government (Federal Register Notice, 54 FR 25318, June 14, 1989).