[Federal Register Volume 78, Number 153 (Thursday, August 8, 2013)]
[Notices]
[Pages 48421-48422]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2013-19167]
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DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
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
AGENCY: National Geodetic Survey (NGS), National Ocean Service (NOS),
National Oceanic and Atmospheric Administration (NOAA), Department of
Commerce.
ACTION: Informational Notice
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SUMMARY: 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).
DATES: Individuals or organizations wishing to submit comments on the
Publication of the North American Datum of 1983 (2011, MA11, PA11),
epoch 2010.00, should do so by August 30, 2013.
ADDRESSES: Written comments should be sent to the attention of Neil D.
Weston, Chief--Spatial Reference System Division, Office of the
National Geodetic Survey, National Ocean Service, 1315 East West
Highway, Silver Spring, Maryland 20910, fax 301-713-4324 or via email
[email protected].
FOR FURTHER INFORMATION CONTACT: Requests for additional information
should be directed to Neil D. Weston, Chief--Spatial Reference System
Division, Office of the National Geodetic Survey, National Ocean
Service, 1315 East West Highway, Silver Spring, Maryland 20910, Phone:
(301) 713-3191.
SUPPLEMENTARY INFORMATION:
Abstract
The National Geodetic Survey (NGS), the federal agency responsible
for defining, maintaining and providing access to the National Spatial
Reference System (NSRS), has adopted a new realization for each of the
three geodetic reference frames which carry the name ``NAD 83''. The
new NAD 83 realizations (2011, MA11, and PA11, all at epoch 2010.00)
were derived from a simultaneous reprocessing of Global Navigation
Satellite System (GNSS) data from the NGS-managed Continuously
Operating Reference Station (CORS) network and a selected number of
International GNSS Service (IGS) global tracking stations in August
2011. To ensure spatial consistency of the NSRS, coordinates for all
current GNSS-derived control stations (passive marks) were optimally
aligned with the CORS coordinates in a nationwide adjustment completed
in June 2012.
[[Page 48422]]
Dated: July 22, 1013.
Juliana P. Blackwell,
Director, Office of National Geodetic Survey, National Ocean Service,
National Oceanic and Atmospheric Administration.
[FR Doc. 2013-19167 Filed 8-7-13; 8:45 am]
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