The NGS Data Sheet
See file dsdata.pdf for more information about the datasheet.
PROGRAM = datasheet95, VERSION = 8.12.5.19
Starting Datasheet Retrieval...
1 National Geodetic Survey, Retrieval Date = FEBRUARY 18, 2025 16:59:32 EST
AH2492 ***********************************************************************
AH2492 CORS - This is a GPS Continuously Operating Reference Station.
AH2492 DESIGNATION - GLENNALLEN CORS ARP
AH2492 CORS_ID - GNAA
AH2492 PID - AH2492
AH2492 STATE/COUNTY- AK/VALDEZ-CORDOVA CENSUS
AH2492 COUNTRY - US
AH2492 USGS QUAD - GULKANA A-4 SW (2016)
AH2492
AH2492 *CURRENT SURVEY CONTROL
AH2492 ______________________________________________________________________
AH2492* NAD 83(2011) POSITION- 62 06 44.58024(N) 145 58 12.70467(W) ADJUSTED
AH2492* NAD 83(2011) ELLIP HT- 602.764 (meters) (06/??/19) ADJUSTED
AH2492* NAD 83(2011) EPOCH - 2010.00
AH2492 ______________________________________________________________________
AH2492 GEOID HEIGHT - 15.085 (meters) GEOID12B
AH2492 NAD 83(2011) X - -2,479,125.603 (meters) COMP
AH2492 NAD 83(2011) Y - -1,674,068.307 (meters) COMP
AH2492 NAD 83(2011) Z - 5,614,917.151 (meters) COMP
AH2492
AH2492 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
AH2492 Standards:
AH2492 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
AH2492 Horiz Ellip SD_N SD_E SD_h (unitless)
AH2492 -------------------------------------------------------------------
AH2492 NETWORK 0.31 0.95 0.14 0.10 0.49 -0.09424300
AH2492 -------------------------------------------------------------------
AH2492
AH2492.The coordinates were established by GPS observations
AH2492.and adjusted by the National Geodetic Survey in June 2019.
AH2492
AH2492.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AH2492.been affixed to the stable North American Tectonic Plate.
AH2492
AH2492.The coordinates are valid at the epoch date displayed above
AH2492.which is a decimal equivalence of Year/Month/Day.
AH2492
AH2492.Due to the release of the International GNSS Service (IGS) 2014
AH2492.realization of the International Terrestrial Reference Frame of 2014
AH2492.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AH2492.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AH2492.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AH2492.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AH2492.currently published epoch of 2010.00.
AH2492
AH2492.Additional information on MYCS2 is available at
AH2492.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AH2492
AH2492.Significant digits in the geoid height do not necessarily reflect accuracy.
AH2492.GEOID12B height accuracy estimate available here.
AH2492
AH2492.The PID for the CORS L1 Phase Center is AH2493.
AH2492
AH2492.Click photographs - Photos may exist for this station.
AH2492
AH2492.The XYZ, and position/ellipsoidal ht. are equivalent.
AH2492
AH2492.The ellipsoidal height was determined by GPS observations
AH2492.and is referenced to NAD 83.
AH2492
AH2492. The following values were computed from the NAD 83(2011) position.
AH2492
AH2492; North East Units Scale Factor Converg.
AH2492;SPC AK 3 - 903,449.631 501,555.780 MT 0.99990003 +0 01 34.8
AH2492;UTM 06 - 6,887,126.734 553,737.939 MT 0.99963537 +0 54 36.8
AH2492
AH2492! - Elev Factor x Scale Factor = Combined Factor
AH2492!SPC AK 3 - 0.99990568 x 0.99990003 = 0.99980572
AH2492!UTM 06 - 0.99990568 x 0.99963537 = 0.99954109
AH2492
AH2492_U.S. NATIONAL GRID SPATIAL ADDRESS: 6VWP5373787126(NAD 83)
AH2492
AH2492 SUPERSEDED SURVEY CONTROL
AH2492
AH2492 ELLIP H (06/27/12) 602.738 (m) GP(2010.00) 0 0
AH2492 NAD 83(2011)- 62 06 44.58162(N) 145 58 12.70768(W) AD(2010.00) c
AH2492 NAD 83(2011)- 62 06 44.57999(N) 145 58 12.70495(W) AD(2010.00) c
AH2492 ELLIP H (08/??/11) 602.755 (m) GP(2010.00) c c
AH2492 ELLIP H (02/10/07) 602.743 (m) GP(2007.00)
AH2492 NAD 83(2007)- 62 06 44.57855(N) 145 58 12.70390(W) AD(2007.00) c
AH2492 NAD 83(CORS)- 62 06 44.57648(N) 145 58 12.70158(W) AD(2003.00) c
AH2492 ELLIP H (10/??/06) 602.709 (m) GP(2003.00) c c
AH2492 NAD 83(CORS)- 62 06 44.57642(N) 145 58 12.70130(W) AD(2003.00) c
AH2492 ELLIP H (03/??/03) 602.722 (m) GP(2003.00) c c
AH2492 NAD 83(CORS)- 62 06 44.57380(N) 145 58 12.69544(W) AD(2002.00) c
AH2492 ELLIP H (03/??/02) 602.721 (m) GP(2002.00) c c
AH2492 NAD 83(CORS)- 62 06 44.57323(N) 145 58 12.69523(W) AD(1997.00) c
AH2492 ELLIP H (01/??/99) 602.736 (m) GP(1997.00) c c
AH2492 NAD 83(CORS)- 62 06 44.57305(N) 145 58 12.69456(W) AD(1997.00) c
AH2492 ELLIP H (08/??/98) 602.693 (m) GP(1997.00) c c
AH2492 NAD 83(CORS)- 62 06 44.57323(N) 145 58 12.69523(W) AD(1997.00) c
AH2492 ELLIP H (01/??/97) 602.736 (m) GP(1997.00) c c
AH2492
AH2492.Superseded values are not recommended for survey control.
AH2492
AH2492.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AH2492.See file dsdata.pdf to determine how the superseded data were derived.
AH2492
AH2492_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
AH2492
AH2492 STATION DESCRIPTION
AH2492
AH2492'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
AH2492'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
AH2492'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
AH2492'ACCESSIBLE AT THE WORLDWIDE WEB.
AH2492'https://geodesy.noaa.gov/CORS/data.shtml
AH2492'https://geodesy.noaa.gov/CORS
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