WARK00NZL Site Information Form (site log)
International GNSS Service
See Instructions at:
https://files.igs.org/pub/station/general/sitelog_instr_v2.0.txt
0. Form
Prepared by (full name) : Aleksandr Spesivtsev
Date Prepared : 2025-04-10
Report Type : UPDATE
If Update:
Previous Site Log : wark00nzl_20211217.log
Modified/Added Sections : 3.16, 3.17, 6.4, 6.5, 6.6
1. Site Identification of the GNSS Monument
Site Name : Warkworth GPS
Nine Character ID : WARK00NZL
Monument Inscription : none
IERS DOMES Number : 50243M001
CDP Number : none
Monument Description : DEEP-BRACED (UNAVCO STYLE)
Height of the Monument : 1.5 m
Monument Foundation : FIVE STAINLESS STEEL RODS
Foundation Depth : 1.8 m
Marker Description : TOP CENTRE OF STAINLESS BLOCK
Date Installed : 2009-01-01T00:00Z
Geologic Characteristic : Sandstone/siltstone
Bedrock Type : SEDIMENTARY
Bedrock Condition : WEATHERED
Fracture Spacing :
Fault zones nearby : NO
Distance/activity :
Additional Information : The site is underlain by thin-bedded, volcanic-
: rich, graded sandstone and siltstone of the
: Pakiri Formation (Waitemata group) of early
: Miocene age. Weathering to a soft silty clay
: with low plasticity and relatively high shear
: strength is common in the top ~10 metres.
: Clay to at least 10.5 m depth was found during
: monument installation.
: Marker is top centre of stainless block that
: forms the top of the monument
2. Site Location Information
City or Town : Warkworth
State or Province : North Auckland
Country or Region : NZL
Tectonic Plate : AUSTRALIAN
Approximate Position (ITRF)
X coordinate (m) : -5115333.2299
Y coordinate (m) : 477886.9079
Z coordinate (m) : -3767147.4730
Latitude (N is +) : -362603.88
Longitude (E is +) : +1743946.01
Elevation (m,ellips.) : 111.3
Additional Information : Located close to the Warkworth VLBI antenna.
: The antenna causes a sky-visibility obstruction
: to the southeast (see Section 9.3.1).
3. GNSS Receiver Information
3.1 Receiver Type : TRIMBLE NETRS
Satellite System : GPS
Serial Number : 4706128321
Firmware Version : 1.20
Elevation Cutoff Setting :
Date Installed : 2009-01-23T00:00Z
Date Removed : 2009-09-11T00:00Z
Temperature Stabiliz. :
Additional Information :
3.2 Receiver Type : TRIMBLE NETRS
Satellite System : GPS
Serial Number : 4752143428
Firmware Version : 1.25
Elevation Cutoff Setting :
Date Installed : 2009-09-11T00:00Z
Date Removed : 2011-01-10T00:23Z
Temperature Stabiliz. :
Additional Information :
3.3 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5034K69668
Firmware Version : 4.17
Elevation Cutoff Setting :
Date Installed : 2011-01-10T00:23Z
Date Removed : 2011-11-11T00:00Z
Temperature Stabiliz. :
Additional Information :
3.4 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5034K69668
Firmware Version : 4.42
Elevation Cutoff Setting :
Date Installed : 2011-11-11T00:00Z
Date Removed : 2012-06-15T00:00Z
Temperature Stabiliz. :
Additional Information :
3.5 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO
Serial Number : 5034K69668
Firmware Version : 4.46
Elevation Cutoff Setting : 3 deg
Date Installed : 2012-06-15T00:00Z
Date Removed : 2013-03-20T23:12Z
Temperature Stabiliz. :
Additional Information :
3.6 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO+BDS+QZSS
Serial Number : 5034K69668
Firmware Version : 4.70
Elevation Cutoff Setting : 3 deg
Date Installed : 2013-03-20T23:13Z
Date Removed : 2013-05-02T00:11Z
Temperature Stabiliz. :
Additional Information : tracking enabled for GPS ((L1-CA,L2-Legacy)
: Glonass (L1-C/A,L1/P,L2-P),Compass/BeiDou
: (B1) and QZSS (L1-C,L2-C) signals
3.7 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 5034K69668
Firmware Version : 4.70
Elevation Cutoff Setting : 3 deg
Date Installed : 2013-05-02T00:11Z
Date Removed : 2014-09-30T21:39Z
Temperature Stabiliz. :
Additional Information : added the capability to track GPS (L5 I+Q),
: Galileo (E1,E5-A,E5-B,E5-AltBOC),BeiDou
: (B2,B3) and QZSS (L1-CA,L1-SAIF,L1-C,
: L2-C,L5,LEX)
3.8 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 5034K69668
Firmware Version : 4.81
Elevation Cutoff Setting : 0 deg
Date Installed : 2014-09-30T21:40Z
Date Removed : 2015-09-20T17:25Z
Temperature Stabiliz. : none
Additional Information : firmware upgrade
3.9 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 5034K69668
Firmware Version : 4.85
Elevation Cutoff Setting : 0 deg
Date Installed : 2015-09-20T17:25Z
Date Removed : 2016-04-19T22:49Z
Temperature Stabiliz. :
Additional Information : firmware upgrade
3.10 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 5522R50052
Firmware Version : 5.10
Elevation Cutoff Setting : 0 deg
Date Installed : 2016-04-19T22:49Z
Date Removed : 2016-09-19T09:19Z
Temperature Stabiliz. : none
Additional Information :
3.11 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 5522R50052
Firmware Version : 5.14
Elevation Cutoff Setting : 0 deg
Date Installed : 2016-09-19T09:19Z
Date Removed : 2016-12-20T08:28Z
Temperature Stabiliz. : none
Additional Information : firmware upgrade
3.12 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 5522R50052
Firmware Version : 5.15
Elevation Cutoff Setting : 0 deg
Date Installed : 2016-12-20T08:28Z
Date Removed : 2018-01-10T09:32Z
Temperature Stabiliz. : none
Additional Information :
3.13 Receiver Type : TRIMBLE NETR9
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 5522R50052
Firmware Version : 5.22
Elevation Cutoff Setting : 0 deg
Date Installed : 2018-01-10T09:32Z
Date Removed : 2019-09-26T01:03Z
Temperature Stabiliz. : none
Additional Information : enabled GPS-L5 observable
3.14 Receiver Type : TRIMBLE ALLOY
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 5921R40150
Firmware Version : 5.42
Elevation Cutoff Setting : 0 deg
Date Installed : 2019-09-26T01:03Z
Date Removed : 2020-04-16T21:20Z
Temperature Stabiliz. : none
Additional Information :
3.15 Receiver Type : TRIMBLE ALLOY
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 5921R40150
Firmware Version : 5.43
Elevation Cutoff Setting : 0 deg
Date Installed : 2020-04-16T21:20Z
Date Removed : 2020-09-22T10:07Z
Temperature Stabiliz. : none
Additional Information :
3.16 Receiver Type : TRIMBLE ALLOY
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 5921R40150
Firmware Version : 5.45
Elevation Cutoff Setting : 0 deg
Date Installed : 2020-09-22T10:07Z
Date Removed : 2025-04-10T04:22Z
Temperature Stabiliz. : none
Additional Information : firmware upgrade
3.17 Receiver Type : TRIMBLE ALLOY
Satellite System : GPS+GLO+GAL+BDS+QZSS
Serial Number : 5921R40150
Firmware Version : 6.23
Elevation Cutoff Setting : 0 deg
Date Installed : 2025-04-10T04:22Z
Date Removed : (CCYY-MM-DDThh:mmZ)
Temperature Stabiliz. : none
Additional Information :
3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions)
Satellite System : (GPS+GLO+GAL+BDS+QZSS+SBAS)
Serial Number : (A20, but note the first A5 is used in SINEX)
Firmware Version : (A11)
Elevation Cutoff Setting : (deg)
Date Installed : (CCYY-MM-DDThh:mmZ)
Date Removed : (CCYY-MM-DDThh:mmZ)
Temperature Stabiliz. : (none or tolerance in degrees C)
Additional Information : (multiple lines)
4. GNSS Antenna Information
4.1 Antenna Type : TRM55971.00 NONE
Serial Number : 30477149
Antenna Reference Point : BAM
Marker->ARP Up Ecc. (m) : 0.0020
Marker->ARP North Ecc(m) : 0.0000
Marker->ARP East Ecc(m) : 0.0000
Alignment from True N : 0 deg
Antenna Radome Type : NONE
Radome Serial Number :
Antenna Cable Type :
Antenna Cable Length :
Date Installed : 2009-01-23T00:00Z
Date Removed : 2019-09-26T01:03Z
Additional Information : Antenna temporarily removed for maintenance on
: 2015-09-21 between 00:32 - 01:22 UTC
4.2 Antenna Type : TRM115000.00 NONE
Serial Number : 1551016808
Antenna Reference Point : BAM
Marker->ARP Up Ecc. (m) : 0.0020
Marker->ARP North Ecc(m) : 0.0000
Marker->ARP East Ecc(m) : 0.0000
Alignment from True N : 0 deg
Antenna Radome Type : NONE
Radome Serial Number :
Antenna Cable Type :
Antenna Cable Length :
Date Installed : 2019-09-26T01:03Z
Date Removed : (CCYY-MM-DDThh:mmZ)
Additional Information : individual antenna calibration performed by
: Geoscience Australia
4.x Antenna Type : (A20, from rcvr_ant.tab; see instructions)
Serial Number : (A*, but note the first A5 is used in SINEX)
Antenna Reference Point : (BPA/BCR/XXX from "antenna.gra"; see instr.)
Marker->ARP Up Ecc. (m) : (F8.4)
Marker->ARP North Ecc(m) : (F8.4)
Marker->ARP East Ecc(m) : (F8.4)
Alignment from True N : (deg; + is clockwise/east)
Antenna Radome Type : (A4 from rcvr_ant.tab; see instructions)
Radome Serial Number :
Antenna Cable Type : (vendor & type number)
Antenna Cable Length : (m)
Date Installed : (CCYY-MM-DDThh:mmZ)
Date Removed : (CCYY-MM-DDThh:mmZ)
Additional Information : (multiple lines)
5. Surveyed Local Ties
5.1 Tied Marker Name : Warkworth radio telescope axis intersection
Tied Marker Usage : VLBI
Tied Marker CDP Number :
Tied Marker DOMES Number :
Differential Components from GNSS Marker to the tied monument (ITRS)
dx (m) : 5.990
dy (m) : -42.890
dz (m) : -48.560
Accuracy (mm) : 1
Survey method : TOTAL STATION
Date Measured : 2010-03-10T00:00Z
Additional Information : This was a preliminary determination of the
: tie between the GNSS monument and the radio
: telescope axis intersection, using reflectors
: on the rim of the antenna and taking
: measurements with the telescope in a variety
: of orientations.
5.2 Tied Marker Name : Warkworth Radio Telescope Axis IVP
Tied Marker Usage : VLBI
Tied Marker CDP Number : 7277
Tied Marker DOMES Number : 50243S001
Differential Components from GNSS Marker to the tied monument (ITRS)
dx (m) :
dy (m) :
dz (m) :
Accuracy (mm) : 1
Survey method : GPS CAMPAIGN/LEVELLING/TRIANGULATION
Date Measured : 2012-12-07T00:00Z
Additional Information : Local survey by LINZ.
: resulting cartesian coordinates are (ITRF2008)
: WARK -5115333.3149 477886.8944 -3767147.3447
: IVP -5115324.4218 477843.2955 -3767192.8254
: For more information contact LINZ PositioNZ
: (See Section 12).
5.3 Tied Marker Name : Warkworth Radio Telescope Axis IVP
Tied Marker Usage : VLBI
Tied Marker CDP Number : 7377
Tied Marker DOMES Number : 50243S001
Differential Components from GNSS Marker to the tied monument (ITRS)
dx (m) : 42.580
dy (m) : -44.260
dz (m) : 16.620
Accuracy (mm) : 1
Survey method : GPS CAMPAIGN/LEVELLING/TRIANGULATION
Date Measured : 2019-02-09T00:00Z
Additional Information : Local survey by LINZ.
: Resulting cartesian coordinates are (ITRF2014)
: WARK -5115333.4447 477886.8770 -3767147.1377
: IVP -5115324.5517 477843.2763 -3767192.6192
: Full survey report and SINEX provided to IERS.
: For more information contact LINZ PositioNZ
: (See Section 12).
5.x Tied Marker Name :
Tied Marker Usage : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc)
Tied Marker CDP Number : (A4)
Tied Marker DOMES Number : (A9)
Differential Components from GNSS Marker to the tied monument (ITRS)
dx (m) : (m)
dy (m) : (m)
dz (m) : (m)
Accuracy (mm) : (mm)
Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc)
Date Measured : (CCYY-MM-DDThh:mmZ)
Additional Information : (multiple lines)
6. Frequency Standard
6.1 Standard Type : INTERNAL
Input Frequency :
Effective Dates : 2009-01-23/2012-03-22
Notes :
6.2 Standard Type : EXTERNAL H-MASER
Input Frequency : 10.0 MHz
Effective Dates : 2012-03-23/2012-07-11
Notes : on EXTERNAL H-MASER timing, using a feed from
: the H-MASER at the radio telescope.
: Data logging failure due to H-Maser issue
: from 2012-07-04 to 2012-07-08.
6.3 Standard Type : INTERNAL
Input Frequency :
Effective Dates : 2012-07-12/2013-03-04
Notes :
6.4 Standard Type : EXTERNAL H-MASER
Input Frequency : 10.0 MHz
Effective Dates : 2013-03-05/2024-05-30
Notes :
6.5 Standard Type : INTERNAL
Input Frequency :
Effective Dates : 2024-05-30/2025-04-10
Notes :
6.6 Standard Type : EXTERNAL H-MASER
Input Frequency : 10.0 MHz
Effective Dates : 2025-04-10/CCYY-MM-DD
Notes :
6.x Standard Type : (INTERNAL or EXTERNAL H-MASER/CESIUM/etc)
Input Frequency : (if external)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
7. Collocation Information
7.1 Instrumentation Type : VLBI
Status : PERMANENT
Effective Dates : 2009-01-23/CCYY-MM-DD
Notes : Warkworth radio telescope operated by Auckland
: University of Technology.
7.x Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc)
Status : (PERMANENT/MOBILE)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8. Meteorological Instrumentation
8.1.x Humidity Sensor Model :
Manufacturer :
Serial Number :
Data Sampling Interval : (sec)
Accuracy (% rel h) : (% rel h)
Aspiration : (UNASPIRATED/NATURAL/FAN/etc)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.2.x Pressure Sensor Model :
Manufacturer :
Serial Number :
Data Sampling Interval : (sec)
Accuracy : (hPa)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.3.x Temp. Sensor Model :
Manufacturer :
Serial Number :
Data Sampling Interval : (sec)
Accuracy : (deg C)
Aspiration : (UNASPIRATED/NATURAL/FAN/etc)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.4.x Water Vapor Radiometer :
Manufacturer :
Serial Number :
Distance to Antenna : (m)
Height Diff to Ant : (m)
Calibration date : (CCYY-MM-DD)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Notes : (multiple lines)
8.5.x Other Instrumentation : (multiple lines)
9. Local Ongoing Conditions Possibly Affecting Computed Position
9.1.x Radio Interferences : (TV/CELL PHONE ANTENNA/RADAR/etc)
Observed Degradations : (SN RATIO/DATA GAPS/etc)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Additional Information : (multiple lines)
9.2.x Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Additional Information : (multiple lines)
9.3.1 Signal Obstructions : VLBI ANTENNA
Effective Dates : 2009-01-23/CCYY-MM-DD
Additional Information : The radio telescope is on a small hill about
: 60 m southeast of the GNSS antenna. The axis
: intersection of the telescope is about 20 m
: above the GNSS antenna. The sky obstruction
: is therefore about 30 degrees in the SE
: direction, and varies slightly with the
: orientation of the telescope. See Section 13
: for web site with photos.
9.3.x Signal Obstructions : (TREES/BUILDINGS/etc)
Effective Dates : (CCYY-MM-DD/CCYY-MM-DD)
Additional Information : (multiple lines)
10. Local Episodic Effects Possibly Affecting Data Quality
10.x Date : (CCYY-MM-DD/CCYY-MM-DD)
Event : (TREE CLEARING/CONSTRUCTION/etc)
11. On-Site, Point of Contact Agency Information
Agency : GNS Science
Preferred Abbreviation : GNS
Mailing Address : 1 Fairway Drive, Avalon 5010,
: PO Box 30368, Lower Hutt 5040,
: New Zealand
Primary Contact
Contact Name : GeoNet Reception
Telephone (primary) : +64 4 570 1444
Telephone (secondary) :
Fax : +64 4 570 4676
E-mail : info@geonet.org.nz
Secondary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information :
12. Responsible Agency (if different from 11.)
Agency : Land Information New Zealand
Preferred Abbreviation : LINZ
Mailing Address : 155 The Terrace,
: PO Box 5501, Wellington 6145,
: New Zealand
Primary Contact
Contact Name : LINZ PositioNZ
Telephone (primary) : +64 4 528 0338
Telephone (secondary) :
Fax :
E-mail : positionz@linz.govt.nz
Secondary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information : The site has been established by GNS Science
: and is now part of the LINZ PositioNZ Network
: (http://www.linz.govt.nz/positionz)
13. More Information
Primary Data Center : CDDIS
Secondary Data Center : IGN
URL for More Information : www.geonet.org.nz
Hardcopy on File
Site Map : See LINZ web site referenced below in
Site Diagram : Additional Information.
Horizon Mask :
Monument Description :
Site Pictures :
Additional Information : Additional Information.
: Additional Information.
: Additional Information.
: Additional Information.
: http://magma.geonet.org.nz/delta/app
: (then search for CGPS mark WARK)
Antenna Graphics with Dimensions
TRM55971.00
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