LWTG Site Information Form (site log) International GPS Service See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Richard Bingley Date Prepared : 2013-10-29 Report Type : UPDATE If Update: Previous Site Log : lwtg_20130711.log Modified/Added Sections : 3.4, 3.5 1. Site Identification of the GNSS Monument Site Name : Lerwick Tide Gauge Four Character ID : LWTG Monument Inscription : IERS DOMES Number : 19159M001 CDP Number : (A4) Monument Description : STEEL PLATE AND CARBON FIBRE PIPE Height of the Monument : 3.0m Monument Foundation : PIER/BREAKWATER Foundation Depth : (m) Marker Description : TOP OF 40mm DIA THREAD ON STEEL PLATE Date Installed : 2005-08-17T15:00Z Geologic Characteristic : BEDROCK Bedrock Type : SEDIMENTARY (SANDSTONE) Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (1-10 cm/11-50 cm/51-200 cm/over 200 cm) Fault zones nearby : (YES/NO/Name of the zone) Distance/activity : (multiple lines) Additional Information : The monument is mounted adjacent to the : tide gauge building, which is located on a : stone pier/breakwater, built in 1913. : The GPS antenna is located on the monument : which consists of a 3m carbon fibre pipe mounted : on a steel plate, which is fixed to a concrete : plinth on top of the pier/breakwater stone wall. : The GPS antenna is attached to the carbon fibre : pipe using a 5/8" thread. : The carbon fibre pipe is attached to the steel : plate using a 40 mm diameter thread. : The male part of the 40mm diameter thread is on : the steel plate and has a domed head, which : serves as the survey marker. 2. Site Location Information City or Town : Lerwick State or Province : Shetland Country : Scotland Tectonic Plate : EURASIAN Approximate Position X coordinate (m) : 3181624 Y coordinate (m) : -63327 Z coordinate (m) : 5509084 Latitude (N is +) : +600914.60 Longitude (E is +) : -010824.97 Elevation (m,ellips.) : 51.6 Additional Information : (multiple lines) 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : 13838 Firmware Version : CJ00 Elevation Cutoff Setting : 5 Date Installed : 2005-08-19T00:00Z Date Removed : 2006-09-19T23:59Z Temperature Stabiliz. : NONE Additional Information : Receiver is an Ashtech Micro-Z. : Full receiver serial number is ZR2 2001 3838. : Operation using a direct modem connection. : Download using MicroManager Pro v1.1.00 (2001). : Conversion to RINEX using ASRINEXO v2.9.7 : (with PR SMOOTH FLAG 0). 3.2 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : 13833 Firmware Version : CK00 Elevation Cutoff Setting : 5 Date Installed : 2006-10-10T11:00Z Date Removed : 2008-12-09T23:59Z Temperature Stabiliz. : NONE Additional Information : Receiver is an Ashtech Micro-Z. : Full receiver serial number is ZR2 2001 3833. : Operation using a direct modem connection. : Download using MicroManager Pro v1.1.00 (2001). : Conversion to RINEX using ASRINEXO v2.9.7 : (with PR SMOOTH FLAG 0). 3.3 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : 13833 Firmware Version : CK00 Elevation Cutoff Setting : 5 Date Installed : 2008-12-10T00:00Z Date Removed : 2013-07-09T11:59Z Temperature Stabiliz. : NONE Additional Information : Receiver is an Ashtech Micro-Z. : Full receiver serial number is ZR2 2001 3833. : Operation using a direct modem connection. : Download using MicroManager Pro v2.2.00 (Feb 1, 2005). : Conversion to RINEX using TEQC 2008Oct2. 3.4 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS Serial Number : 5237K52460 Firmware Version : 4.70 Elevation Cutoff Setting : 5 deg Date Installed : 2013-07-11T12:00Z Date Removed : 2013-10-28T11:59Z Temperature Stabiliz. : (deg C) +/- (deg C) Additional Information : Full receiver serial number is 5237K52460. : Operation using a direct broadband connection. : Download using ftp push from receiver. : Conversion to RINEX by receiver. 3.5 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO+GAL+BDS Serial Number : 5237K52460 Firmware Version : 4.82 Elevation Cutoff Setting : 5 deg Date Installed : 2013-10-28T12:00Z Date Removed : CCYY-MM-DDThh:mmZ Temperature Stabiliz. : (deg C) +/- (deg C) Additional Information : Full receiver serial number is 5237K52460. : Operation using a direct broadband connection. : Download using ftp push from receiver. : Conversion to RINEX by receiver. 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS/GLONASS/GPS+GLONASS) Serial Number : (A5) 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 : ASH701945C_M SNOW Serial Number : 14803 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 3.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : SNOW Radome Serial Number : Antenna Cable Type : ASHTECH 100914 REVA Antenna Cable Length : 30m Date Installed : 2005-08-19T00:00Z Date Removed : 2010-09-23T23:59Z Additional Information : Full antenna serial number is CR5 2001 4803. : On original monument consisting of original : bolts, original steel plate and original : carbon fibre pipe. : The monument was damaged in a storm some time : around 2010-09-23. 4.2 Antenna Type : ASH701945C_M SNOW Serial Number : 14803 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 3.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : SNOW Radome Serial Number : Antenna Cable Type : ASHTECH 100914 REVA Antenna Cable Length : 30m Date Installed : 2010-09-24T00:00Z Date Removed : 2011-07-06T23:59Z Additional Information : Full antenna serial number is CR5 2001 4803. : Monument location and stability were affected : by storm damage. : The monument appears to have a correct height ; but has a gradual movement of up to 6cm in plan. : It is advisable, therefore, not to use data : from this period. 4.3 Antenna Type : ASH701945C_M SNOW Serial Number : 14803 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 3.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : SNOW Radome Serial Number : Antenna Cable Type : ASHTECH 100914 REVA Antenna Cable Length : 30m Date Installed : 2011-07-07T00:00Z Date Removed : 2013-07-09T11:59Z Additional Information : Full antenna serial number is CR5 2001 4803. : The monument was re-installed on 2011-07-06 : with the same bolts the same steel plate and : the same carbon fibre pipe, but with the : steel end to the carbon fibre pipe welded to : the traingular plate. : All attempts were made to put the carbon fibre : pipe in the same place as previously. : For long term studies, therefore, it is : advisable to allow for a coordinate offset in : the time series between 2010-09-23 and 2011-07-07. 4.4 Antenna Type : TRM59900.00 SCIS Serial Number : 5249360779 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 3.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SCIS Radome Serial Number : 1310 Antenna Cable Type : TRIMBLE Antenna Cable Length : 30m Date Installed : 2013-07-11T12:00Z Date Removed : CCYY-MM-DDThh:mmZ Additional Information : Full antenna serial number is 5249360779. : When replacing the antenna, the top section of : carbon fibre pipe was first removed from the : bottom section of carbon fibre pipe and then put : back in place. The bottom section of carbon : fibre pipe was not removed from the steel plate. : The monument was re-installed with the same : bolts, the same steel plate and the same carbon : fibre pipe. : All attempts were made to put the carbon fibre : pipe in the same place as previously. : For long term studies, however, it is advisable : to allow for a coordinate offset in the time : series between 2013-07-09 and 2013-07-11. 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.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 : (if external) Effective Dates : 2005-08-19/CCYY-MM-DD Notes : (multiple lines) 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.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 8.1.1 Humidity Sensor Model : NONE 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) 8.1.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) 8.2.1 Pressure Sensor Model : NONE 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) 8.2.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) 8.3.1 Temp. Sensor Model : NONE 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) 8.3.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) 8.4.1 Water Vapor Radiometer : NONE 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) 8.4.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.x Signal Obstructions : (TREES/BUILDLINGS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 10. Local Episodic Effects Possibly Affecting Data Quality 10.1 Date : (CCYY-MM-DDThh:mmZ) Event : (TREE CLEARING/CONSTRUCTION/etc) 10.x Date : (CCYY-MM-DDThh:mmZ) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : Lerwick Port Authority Preferred Abbreviation : Mailing Address : Albert Building : Lerwick : Shetland ZE1 0LL : UK Primary Contact Contact Name : Harbour Master Telephone (primary) : Telephone (secondary) : Fax : E-mail : Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : BIGF Preferred Abbreviation : BIGF Mailing Address : University of Nottingham : University Park : Nottingham NG72RD : UK Primary Contact Contact Name : Richard Bingley Telephone (primary) : +44 (0)115 9513932 Telephone (secondary) : +44 (0)115 9513880 Fax : +44 (0)115 9513881 E-mail : richard.bingley@nottingham.ac.uk Secondary Contact Contact Name : Experimental Officers Telephone (primary) : +44 (0)115 9513921 Telephone (secondary) : +44 (0)115 9513880 Fax : +44 (0)115 9513881 E-mail : iszrb@nottingham.ac.uk Additional Information : LWTG is operated by the University of Nottingham : for the Natural Environment Research Council : (NERC) British Isles continuous GNSS Facility : (BIGF. 13. More Information Primary Data Center : Secondary Data Center : URL for More Information : http://www.bigf.ac.uk Hardcopy on File Site Map : Y Site Diagram : Y Horizon Mask : Y Monument Description : Y Site Pictures : Y Additional Information : (multiple lines) Antenna Graphics with Dimensions TRM59900.00 ----- / + \ <-- 0.125 L2 | + | <-- 0.111 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | =| | +------x------+ <-- 0.0 BPA=ARP <-- 0.381 --> ARP: Antenna Reference Point