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Station Report

Geoid velocity added

To correct for the vertical drift between reference frames, the velocity of the geoid height (VN) is now calculated and incorporated into the calculation of the orthometric height. View documentation to learn more.

WARNING: The use of small antennas on larger diameter concrete pillar CBN monuments can result in vertical position biases of up to 3 cm when using the GPS L2 signal due to potential signal multipath reflections from the top of the pillars. It is recommended to mount such antennas as close as possible to the top of the pillar to reduce multipath effects (e.g., 5 cm or less from the antenna reference point). Larger diameter antennas that cover most of the tops of these pillars are not significantly affected by this kind of multipath.

Site Identification

Name Province NTS map sheet Unique Number Provincial Identifier Network
CAL4 CALGARY-PIER 4 Alberta 082O01 77X1058 25320 CBN

Station Coordinates

Unless otherwise noted, all displayed uncertainties are computed at the 68% (1-sigma) confidence level.

Changing these fields will auto-update the station coordinate information below.

The velocities are interpolated from the national Velocity Grid version 8.0.

Latitude
Longitude
h (metres)
Vφ (mm/y)
Vλ (mm/y)
Vh (mm/y)
X (metres)
Y (metres)
Z (metres)
Vx (mm/y)
Vy (mm/y)
Vz (mm/y)
Zone
Easting (metres)
Northing (metres)
h (metres)
Scale
Combined
Convergence
N (metres)
H (metres)
Published date Project ID 2024-11-21       M24-002
VN (mm/year)
VH (mm/year)
Equipot. of geoid model (W0, m2s-2)

Vertical Data (levelling)

Vertical Datum Elevation (m) Order Gravity (mGal) Published Project ID
CGVD2013 (2010.0) 1199.070 1st 980778.74 2013 H13ML1311
CGVD28 1198.909 1st 981160.74 1995 N6A95

The CGVD2013 height reported in the Vertical Data table is approximate because it is calculated from historical levelling data and not from the combination of GNSS and a geoid model.

Vertical Datum Separation

Datum 1 − Datum 2 Elevation 1 (m) Elevation 2 (m) Elevation Difference (m) Epoch

Station Marker

Marker Type Inspected in Established by Status Comments
Self centering plate 2011 Alta. dept. of energy and natural resources (alberta survey and mapping) Good

Location

Accessible by passenger car or light truck and a walk of less than 50 m.

Spingbank airport conrete pillar with stainless steel top at northeast corner of intersection of maclaurin drive (entrance road to spring- bank airport) and 48 avenue northwest, 0.8 km north and 1.6 km west of springbank road overpass for highway no. 1, 28.2 m north of centre line of 48 avenue nw, 27.8 m east of cen- tre line of maclaurin drive, 5.1 m north of fence line, 1.5 m above highway level. Calibration baseline monument esta- blished by alberta survey control. Station is also part of calgary gps validation network and canadian base network.

Use of Canadian Geodetic Survey products and data is subject to the Open Government Licence - Canada


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