SEY200SYC Site Information Form (site log) International GNSS Service See Instructions at: https://files.igs.org/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Jacob Sklar Date Prepared : 2023-01-31 Report Type : UPDATE If Update: Previous Site Log : sey2_20210708.log Modified/Added Sections : 3.8, 3.9, 4,1, 4.2, 8.1.1, 8.1.2, 8.2.1, 8.2.2, : 8.3.1, 8.3.2, 11, 12 1. Site Identification of the GNSS Monument Site Name : Republic of the Seychelles Permanent GNSS Four Character ID : SEY2 Monument Inscription : IERS DOMES Number : 39801M006 CDP Number : Monument Description : Steel well head monument with antenna adapter Height of the Monument : 1.5 m Monument Foundation : 6” diameter steel casing grouted to granite Foundation Depth : 35 m Marker Description : divot in base plate of SCIGN mount Date Installed : 2015-02-19T00:00Z Geologic Characteristic : Granitic bedrock Bedrock Type : IGENOUS Bedrock Condition : FRESH Fracture Spacing : Fault zones nearby : No Distance/activity : Additional Information : The monument is a .5” thick custom stainless : steel adapter welded to the top of 6” nominal : steel pipe coupled to the bedrock with portland : cement to a depth of 35 m. A SCIGN mount is : welded to the custom adapter. 2. Site Location Information City or Town : La Misere State or Province : Mahe Island Country : Seychelles Tectonic Plate : EAST AFRICAN Approximate Position (ITRF) X coordinate (m) : 3602867.3394 Y coordinate (m) : 5238179.3811 Z coordinate (m) : -516268.0725 Latitude (N is +) : -044025.14449 Longitude (E is +) : +0552846.03283 Elevation (m,ellips.) : 538.8156 Additional Information : The original SEY1 GPS station that was : co-located with the UCSD seismic station was : removed due to maintenance and access issues : for the seismometer. The new SEY2 monument : is located on the same property. 3. GNSS Receiver Information 3.1 Receiver Type : JAVAD TRE_G3TH DELTA Satellite System : GPS+GLO Serial Number : 00890 Firmware Version : 3.5.7 Elevation Cutoff Setting : 0 deg Date Installed : 2015-03-06T00:00Z Date Removed : 2016-03-04T00:00Z Temperature Stabiliz. : None Additional Information : Receiver has a version 5 board 3.2 Receiver Type : JAVAD TRE_G3TH DELTA Satellite System : GPS+GLO Serial Number : 01321 Firmware Version : 3.5.8b0-12-52e9 Elevation Cutoff Setting : 0 deg Date Installed : 2016-03-04T00:00Z Date Removed : 2016-03-07T19:59Z Temperature Stabiliz. : None Additional Information : Receiver has version 8 board. Receiver was : removed from SEY1 for use at SEY2. 3.3 Receiver Type : JAVAD TRE_G3TH DELTA Satellite System : GPS+GLO Serial Number : 01321 Firmware Version : 3.6.4 Elevation Cutoff Setting : 0 deg Date Installed : 2016-03-07T19:59Z Date Removed : 2018-08-23T17:40Z Temperature Stabiliz. : none Additional Information : Receiver has version 8 board. 3.4 Receiver Type : JAVAD TRE_G3TH DELTA Satellite System : GPS+GLO+GAL+BDS Serial Number : 01321 Firmware Version : 3.7.2 Elevation Cutoff Setting : 0 deg Date Installed : 2018-08-23T17:45Z Date Removed : 2019-01-02T22:10Z Temperature Stabiliz. : none Additional Information : Receiver has version 8 board. 3.5 Receiver Type : JAVAD TRE_G3TH DELTA Satellite System : GPS+GLO+GAL+BDS Serial Number : 01321 Firmware Version : 3.7.4 Elevation Cutoff Setting : 0 deg Date Installed : 2019-01-02T22:15Z Date Removed : 2019-09-12T21:55Z Temperature Stabiliz. : none Additional Information : Receiver has version 8 board. 3.6 Receiver Type : JAVAD TRE_G3TH DELTA Satellite System : GPS+GLO+GAL+BDS Serial Number : 01321 Firmware Version : 3.7.6 Elevation Cutoff Setting : 0 deg Date Installed : 2019-09-12T21:55Z Date Removed : 2020-04-04T00:07Z Temperature Stabiliz. : none Additional Information : Receiver has version 8 board. 3.7 Receiver Type : JAVAD TRE_G3TH DELTA Satellite System : GPS+GLO+GAL+BDS Serial Number : 01321 Firmware Version : 3.7.9 Elevation Cutoff Setting : 0 deg Date Installed : 2020-04-04T00:07Z Date Removed : 2021-07-08T18:48Z Temperature Stabiliz. : none Additional Information : Receiver has version 8 board. 3.8 Receiver Type : JAVAD TRE_G3TH DELTA Satellite System : GPS+GLO+BDS Serial Number : 01321 Firmware Version : 4.1.01 Elevation Cutoff Setting : 0 deg Date Installed : 2021-07-08T18:48Z Date Removed : 2023-01-31T08:30Z Temperature Stabiliz. : none Additional Information : GAL SV tracking has been disabled. 3.9 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLO+GAL+BDS Serial Number : 3013491 Firmware Version : 5.5.0 Elevation Cutoff Setting : 0 deg Date Installed : 2023-01-31T08:36Z Date Removed : CCYY-MM-DDThh:mmZ Temperature Stabiliz. : 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 : JAVRINGANT_DM SCIS Serial Number : 00805 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0.00 Marker->ARP East Ecc(m) : 0.00 Alignment from True N : 0 deg Antenna Radome Type : SCIS Radome Serial Number : Antenna Cable Type : Times LMR 600 Antenna Cable Length : 36.5 m Date Installed : 2015-03-06T00:00Z Date Removed : 2023-01-31T08:30Z Additional Information : Corrected Marker ARP Up Ecc. on 5/5/17 4.2 Antenna Type : JAVRINGANT_DM SCIS Serial Number : 02102 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0.00 Marker->ARP East Ecc(m) : 0.00 Alignment from True N : 0 deg Antenna Radome Type : SCIS Radome Serial Number : Antenna Cable Type : Times LMR 600 Antenna Cable Length : 36.5 m Date Installed : 2023-01-31T08:36Z Date Removed : CCYY-MM-DDThh:mmZ Additional Information : Corrected Marker ARP Up Ecc. on 5/5/17 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 : SEY1 Tied Marker Usage : Tied Marker CDP Number : NONE Tied Marker DOMES Number : 39801M001 Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -3.01694736841902 dy (m) : 4.78040350879925 dz (m) : 7.21005263158715 Accuracy (mm) : Survey method : Date Measured : 2016-05-09T00:00Z Additional Information : Former SEY1 station. : Dx: -3.01694736841902 +- 0.7733094630493660e-02 : Dy: 4.78040350879925 +- 0.9854041346037380e-02 : Dz: 7.21005263158715 +- 0.2158215647240300e-02 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 : 2015-02-19/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 : Seismic Status : PERMANENT Effective Dates : 1998-08-13/CCYY-MM-DD Notes : UCSD operates a permanent seismic station : on the same property. Seismometers are : located ~ 20 m from GNSS monument. Computers : and related electronics for both stations are : housed nearby in the same shack. 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 : MET4 Manufacturer : Paroscientific Serial Number : 118041 Data Sampling Interval : 60 sec Accuracy (% rel h) : 2 Aspiration : UNASPIRATED Height Diff to Ant : 1 m Calibration date : (CCYY-MM-DD) Effective Dates : 2015-05-04/2023-01-31 Notes : 8.1.2 Humidity Sensor Model : MET4 Manufacturer : Paroscientific Serial Number : 130410 Data Sampling Interval : 60 sec Accuracy (% rel h) : 2 Aspiration : UNASPIRATED Height Diff to Ant : 1 m Calibration date : (CCYY-MM-DD) Effective Dates : 2023-01-31/CCYY-MM-DD Notes : 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 : MET4 Manufacturer : Paroscientific Serial Number : 118041 Data Sampling Interval : 60 sec Accuracy : 0.010 hPa Height Diff to Ant : 1 m Calibration date : (CCYY-MM-DD) Effective Dates : 2015-05-04/2023-01-31 Notes : 8.2.2 Pressure Sensor Model : MET4 Manufacturer : Paroscientific Serial Number : 130410 Data Sampling Interval : 60 sec Accuracy : 0.10 hPa Height Diff to Ant : 1 m Calibration date : (CCYY-MM-DD) Effective Dates : 2023-01-31/CCYY-MM-DD Notes : 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 : MET4 Manufacturer : Paroscientific Serial Number : 118041 Data Sampling Interval : 60 sec Accuracy : 0.5 deg C Aspiration : UNASPIRATED Height Diff to Ant : 1 m Calibration date : Effective Dates : 2015-05-04/2023-01-31 Notes : 8.3.2 Temp. Sensor Model : MET4 Manufacturer : Paroscientific Serial Number : 130410 Data Sampling Interval : 60 sec Accuracy : 0.5 deg C Aspiration : UNASPIRATED Height Diff to Ant : 1 m Calibration date : Effective Dates : 2023-01-31/CCYY-MM-DD Notes : 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.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 : PetroSeychelles Preferred Abbreviation : Mailing Address : PO Box 230, Seypec Building, 1st floor : New Port, Victoria, Mahe Primary Contact Contact Name : Local point of contact Telephone (primary) : Telephone (secondary) : Fax : E-mail : Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : 12. Responsible Agency (if different from 11.) Agency : Jet Propulsion Laboratory Preferred Abbreviation : JPL Mailing Address : 4800 Oak Grove Drive : Pasadena, CA : USA 91109 Primary Contact Contact Name : JPL point of contact Telephone (primary) : 818-354-7055 Telephone (secondary) : Fax : 818-393-4965 E-mail : ggnops@jpl.nasa.gov Secondary Contact Contact Name : EarthScope point of contact Telephone (primary) : 303-381-7500 Telephone (secondary) : Fax : 303-381-7451 E-mail : ggn-ops@earthscope.org Additional Information : 13. More Information Primary Data Center : JPL Secondary Data Center : CDDIS URL for More Information : Hardcopy on File Site Map : Site Diagram : Horizon Mask : Monument Description : Site Pictures : Additional Information : Antenna Graphics with Dimensions JAVRINGANT_DM --------- / \ | | +-------------------------------------------------+ <-- 0.1015 TCR | | | | | | | | +-+-------------------------------------------------+-+ <-- 0.0379 +-------------------+-------------+-------------------+ <-- 0.0345 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP NOM=NRP <-- 0.3800 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering TGP: Top of Ground Plane BGP: Bottom of Ground Plane TPA: Top of Preamplifier BPA: Bottom of Preamplifier TOP: Top of Pole All dimensions are in meters.