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 19, 2025 21:07:48 EST
DM7838 ***********************************************************************
DM7838 HT_MOD - This is a Height Modernization Survey Station.
DM7838 CORS - This is a GPS Continuously Operating Reference Station.
DM7838 DESIGNATION - PORT ARTHUR CORS ARP
DM7838 CORS_ID - TXPT
DM7838 PID - DM7838
DM7838 STATE/COUNTY- TX/JEFFERSON
DM7838 COUNTRY - US
DM7838 USGS QUAD - PORT ARTHUR NORTH (2019)
DM7838
DM7838 *CURRENT SURVEY CONTROL
DM7838 ______________________________________________________________________
DM7838* NAD 83(2011) POSITION- 29 56 50.70133(N) 093 57 10.50838(W) ADJUSTED
DM7838* NAD 83(2011) ELLIP HT- -21.613 (meters) (03/??/22) ADJUSTED
DM7838* NAD 83(2011) EPOCH - 2010.00
DM7838* NAVD 88 ORTHO HEIGHT - 5.55 (meters) 18.2 (feet) GPS OBS
DM7838 **This station is in an area of suspected vertical motion (see below).
DM7838 ______________________________________________________________________
DM7838 GEOID HEIGHT - -27.195 (meters) GEOID18
DM7838 NAD 83(2011) X - -381,299.417 (meters) COMP
DM7838 NAD 83(2011) Y - -5,517,991.639 (meters) COMP
DM7838 NAD 83(2011) Z - 3,165,313.611 (meters) COMP
DM7838
DM7838 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DM7838 Standards:
DM7838 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DM7838 Horiz Ellip SD_N SD_E SD_h (unitless)
DM7838 -------------------------------------------------------------------
DM7838 NETWORK 0.36 0.58 0.17 0.10 0.30 -0.07942700
DM7838 -------------------------------------------------------------------
DM7838
DM7838.The coordinates were established by GPS observations
DM7838.and adjusted by the National Geodetic Survey in March 2022.
DM7838
DM7838.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DM7838.been affixed to the stable North American Tectonic Plate.
DM7838
DM7838.The coordinates are valid at the epoch date displayed above
DM7838.which is a decimal equivalence of Year/Month/Day.
DM7838
DM7838.Due to the release of the International GNSS Service (IGS) 2014
DM7838.realization of the International Terrestrial Reference Frame of 2014
DM7838.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DM7838.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DM7838.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DM7838.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DM7838.currently published epoch of 2010.00.
DM7838
DM7838.Additional information on MYCS2 is available at
DM7838.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DM7838
DM7838.** This station is in an area of suspected land subsidence, uplift, or
DM7838.** crustal motion. NGS recommends this and all published orthometric
DM7838.** heights in such areas be validated before use as vertical control.
DM7838.** Click here to see a list and map of nearby stations with valid
DM7838.** orthometric heights. Note: While datasheets are updated in real-time,
DM7838.** updates to archived datasheets and the SE TX Valid OH map occur
DM7838.** monthly. NGS discourages the use of scaled, VERTCON, or superseded
DM7838.** heights as vertical control as they are deemed unreliable.
DM7838.**
DM7838.** If an established orthometric height is unavailable in the survey control
DM7838.** section, it should be considered suspect. To view suspect heights,
DM7838.** (in the superseded section), select 'Include suspect heights in vertical
DM7838.** motion areas' box from the datasheet retrieval page.
DM7838
DM7838.The orthometric height was determined by GPS observations and a
DM7838.high-resolution geoid model using precise GPS observation and
DM7838.processing techniques.
DM7838
DM7838.Significant digits in the geoid height do not necessarily reflect accuracy.
DM7838.GEOID18 height accuracy estimate available here.
DM7838
DM7838.The PID for the CORS L1 Phase Center is DR7781.
DM7838
DM7838.Click photographs - Photos may exist for this station.
DM7838
DM7838.The XYZ, and position/ellipsoidal ht. are equivalent.
DM7838
DM7838.The ellipsoidal height was determined by GPS observations
DM7838.and is referenced to NAD 83.
DM7838
DM7838. The following values were computed from the NAD 83(2011) position.
DM7838
DM7838; North East Units Scale Factor Converg.
DM7838;SPC TXSC - 4,244,811.406 1,087,040.516 MT 0.99992022 +2 28 21.5
DM7838;SPC TXSC -13,926,518.75 3,566,398.76 sFT 0.99992022 +2 28 21.5
DM7838;UTM 15 - 3,313,340.521 408,042.612 MT 0.99970433 -0 28 32.6
DM7838
DM7838! - Elev Factor x Scale Factor = Combined Factor
DM7838!SPC TXSC - 1.00000339 x 0.99992022 = 0.99992361
DM7838!UTM 15 - 1.00000339 x 0.99970433 = 0.99970772
DM7838
DM7838_U.S. NATIONAL GRID SPATIAL ADDRESS: 15RVP0804213340(NAD 83)
DM7838
DM7838 SUPERSEDED SURVEY CONTROL
DM7838
DM7838 NAD 83(2011)- 29 56 50.70059(N) 093 57 10.50839(W) AD(2010.00) c
DM7838 ELLIP H (06/??/19) -21.661 (m) GP(2010.00) c c
DM7838 NAD 83(2011)- 29 56 50.70088(N) 093 57 10.50855(W) AD(2010.00) c
DM7838 ELLIP H (12/??/11) -21.654 (m) GP(2010.00) c c
DM7838 NAD 83(CORS)- 29 56 50.70115(N) 093 57 10.50922(W) AD(2002.00) c
DM7838 ELLIP H (05/??/11) -21.648 (m) GP(2002.00) c c
DM7838 NAVD 88 (04/24/12) 5.66 (m) GEOID09 model used GPS OBS
DM7838
DM7838.Superseded values are not recommended for survey control.
DM7838
DM7838.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DM7838.See file dsdata.pdf to determine how the superseded data were derived.
DM7838
DM7838_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DM7838
DM7838 STATION DESCRIPTION
DM7838
DM7838'DESCRIBED BY NATIONAL GEODETIC SURVEY 2022
DM7838'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DM7838'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DM7838'ACCESSIBLE AT THE WORLDWIDE WEB.
DM7838'https://geodesy.noaa.gov/CORS/data.shtml
DM7838'https://geodesy.noaa.gov/CORS
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