GCGO00USA 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 : 2022-07-07 Report Type : UPDATE If Update: Previous Site Log : gcgo_20210731.log Modified/Added Sections : 2 1. Site Identification of the GNSS Monument Site Name : Gilmore Creek Geophysical Observatory Four Character ID : GCGO Monument Inscription : None IERS DOMES Number : 40408M006 CDP Number : Monument Description : Steel well head monument with SCIGN adapter Height of the Monument : 2 m Monument Foundation : 6” diameter steel casing grouted to bedrock Foundation Depth : 18.2 m Marker Description : divot in base plate of SCIGN antenna adapter Date Installed : 2016-08-26T00:00Z Geologic Characteristic : Bedrock Type : SCHIST Bedrock Condition : COMPETENT Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : 2. Site Location Information City or Town : Fairbanks State or Province : Alaska Country : United States of America Tectonic Plate : NORTH AMERICAN Approximate Position (ITRF) X coordinate (m) : -2281623.7799 Y coordinate (m) : -1453585.6270 Z coordinate (m) : 5756963.7427 Latitude (N is +) : +645840.9313 Longitude (E is +) : -1472958.0085 Elevation (m,ellips.) : 319.1771 Additional Information : The site is located in central Alaska, 22 : kilometers northeast of Fairbanks, at the NOAA : Fairbanks Command Data Acquisition System : (FCDAS) campus. : The monument is located 100 ft NW of GPS : monument FAIR. : 2022-07-07 A position error was discovered in : the : lat/lon coordinates above. They have been : corrected. 3. GNSS Receiver Information 3.1 Receiver Type : JAVAD TRE_3 DELTA Satellite System : GPS+GLO Serial Number : 02216 Firmware Version : 3.6.6 Elevation Cutoff Setting : 0 deg Date Installed : 2016-08-26T00:00Z Date Removed : 2018-10-04T21:03Z Temperature Stabiliz. : NONE Additional Information : 3.2 Receiver Type : JAVAD TRE_3 DELTA Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 02216 Firmware Version : 3.7.2 Elevation Cutoff Setting : 0 deg Date Installed : 2018-10-04T21:30Z Date Removed : 2019-05-06T06:41Z Temperature Stabiliz. : NONE Additional Information : 3.3 Receiver Type : JAVAD TRE_3 DELTA Satellite System : GPS+GLO+GAL+BDS+QZSS+IRNSS Serial Number : 02216 Firmware Version : 3.7.6 Elevation Cutoff Setting : 0 deg Date Installed : 2019-05-06T06:41Z Date Removed : 2020-03-24T19:17Z Temperature Stabiliz. : none Additional Information : 3.4 Receiver Type : JAVAD TRE_3 DELTA Satellite System : GPS+GLO+GAL+BDS+QZSS+IRNSS Serial Number : 02216 Firmware Version : 3.7.9 Elevation Cutoff Setting : 0 deg Date Installed : 2020-03-24T19:17Z Date Removed : 2021-01-29T01:00Z Temperature Stabiliz. : none Additional Information : 3.5 Receiver Type : JAVAD TRE_3 DELTA Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 02216 Firmware Version : 3.7.9 Elevation Cutoff Setting : 0 deg Date Installed : 2021-01-29T01:00Z Date Removed : 2021-03-17T20:42Z Temperature Stabiliz. : none Additional Information : 3.6 Receiver Type : JAVAD TRE_3 DELTA Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 02216 Firmware Version : 4.0.02 Elevation Cutoff Setting : 0 deg Date Installed : 2021-03-17T20:42Z Date Removed : 2021-07-27T01:06Z Temperature Stabiliz. : none Additional Information : 3.7 Receiver Type : JAVAD TRE_3 DELTA Satellite System : GPS+GLO+GAL+BDS+QZSS Serial Number : 02216 Firmware Version : 4.1.01 Elevation Cutoff Setting : 0 deg Date Installed : 2021-07-27T01:06Z 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 : JAVRINGANT_DM SCIS Serial Number : 00981 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0083 Marker->ARP North Ecc(m) : 0.000 Marker->ARP East Ecc(m) : 0.000 Alignment from True N : 0 deg Antenna Radome Type : SCIS Radome Serial Number : 0657 Antenna Cable Type : Times LMR 600 Antenna Cable Length : 76 m Date Installed : 2016-08-26T00:00Z Date Removed : CCYY-MM-DDThh:mmZ Additional Information : LMR cable is enclosed in 1.5 inch pvc conduit : and buried to a depth of 1 foot. 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 : Effective Dates : 2016-08-26/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 : GPS Status : PERMANENT Effective Dates : 1991-10-17/CCYY-MM-DD Notes : FAIR concrete pillar monument. Antenna : has Ashtech uz-12 receiver attached. FAIR is : located 100 feet due SE from GCGO. 7.2 Instrumentation Type : GNSS Status : PERMANENT Effective Dates : 2005-10-15/CCYY-MM-DD Notes : FAIC rooftop single mast monument. : Antenna has Javad Delta and Trimble NetRS : receviers : attached via a splitter. 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.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 : NOAA/NESDIS Fairbanks Command and Data : Acquisition Station Preferred Abbreviation : NOAA/NESDIS FCDAS Mailing Address : Primary Contact Contact Name : Larry Ledlow Telephone (primary) : 907-451-1274 Telephone (secondary) : Fax : E-mail : larry.ledlow@noaa.gov Secondary Contact Contact Name : Jeff Creamer Telephone (primary) : 907-451-1283 Telephone (secondary) : Fax : E-mail : jeffrey.creamer@noaa.gov Additional Information : Larry is the FCDAS station manager and Jeff is : the facilites manager. 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 : David A. Stowers Telephone (primary) : 818-354-7055 Telephone (secondary) : Fax : 818-393-4965 E-mail : dstowers@jpl.nasa.gov Secondary Contact Contact Name : UNAVCO Network Engineer Telephone (primary) : 303-381-7500 Telephone (secondary) : Fax : 303-381-7451 E-mail : ggn-ops@postal.unavco.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.