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Network station details

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General Information

Station Name Merriwa Image of CORS Antenna
Partner(s) Upper Hunter Shire Council
Status (not a live update) Operational
CORSnet-NSW Release Date May 2012
Station Code MRWA
SCIMS Number TS 12173
Antenna TRM57971.00     NONE
Antenna Height (ARP) 0.000 m
IGS Site Log Geoscience Australia


GNSS Tracking Settings


Note: ON = Available and Enabled, OFF = Available but Not Enabled, N/A = Not Available


CORSnet-NSW Coordinates


Datum Coordinate Source
X GDA2020 -4698467.529 Reg13
(PDF 897 kb)
Y GDA2020 2673955.708 Reg13
(PDF 897 kb)
Z GDA2020 -3373716.914 Reg13
(PDF 897 kb)
Latitude GDA2020 -32 08 23.11364 Reg13
(PDF 897 kb)
Longitude GDA2020 150 21 18.94668 Reg13
(PDF 897 kb)
Easting MGA2020
Zone 56
250531.371 Reg13
(PDF 897 kb)
Northing MGA2020
Zone 56
6441009.151 Reg13
(PDF 897 kb)
Derived AHD71 Height (2020) Approximate AHD71 260.228 h-N (DFSI Spatial Services Calculated)
N Value (2020) AUSGeoid2020 27.915 Geoscience Australia
Ellipsoidal Height GDA2020 288.143 Reg13
(PDF 897 kb)



Datum Coordinate Source
X GDA94 -4698466.676 Conformal transformation from GDA2020
Y GDA94 2673955.849
Conformal transformation from GDA2020
Z GDA94 -3373718.165
Conformal transformation from GDA2020
Latitude GDA94 -32 08 23.15963
Conformal transformation from GDA2020
Longitude GDA94 150 21 18.92590
Conformal transformation from GDA2020
Easting MGA94
Zone 56
250530.861 Conformal transformation from GDA2020
Northing MGA94
Zone 56
6441007.721 Conformal transformation from GDA2020
Derived AHD71 Height (2009) Approximate AHD71 260.258 h-N (DFSI Spatial Services Calculated)
N value (2009) AUSGeoid09 27.982 Geoscience Australia
Ellipsoidal Height GDA94 288.240 Conformal transformation from GDA2020

Note: These horizontal coordinates are equivalent to GDA94(2010) i.e. no distortions. They are different to those found in SCIMS Online, which are GDA94(1997) coordinates i.e. with distortions. The heights are different to those found in SCIMS Online, which are local AHD71 heights. SCIMS Online values for CORS are determined by local tie surveys which connect to the local survey control network.


GNSS Monitoring

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Note: The above graph indicates the long term stability of a CORSnet-NSW station and does not represent actual daily movement. The results are calculated daily and trends are monitored by CORSnet-NSW staff. The diagrams shown are currently updated monthly. Daily differences in CORS position at the millimetre-level are within the limits (noise level) of current DFSI Spatial Services processing techniques.


Reference Mark Monitoring

Monitoring survey not available for this CORS.

Note: The above tables quantify the movement of the CORS pillar with respect to local reference marks. Surveys are carried out at installation and then after 6 months, 18 months and every two years thereafter. The techniques used, as specified by Geoscience Australia, achieve sub-millimetre precision and can detect minute movements in position or height.

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