NLIB Site Information Form International GPS Service for Geodynamics 0. Form Prepared by (full name) : David A. Stowers Date Prepared : 03-JUN-1999 Report Type : UPDATE Prepared Using : vi and sed 1. Site Identification of the GPS Monument Site Name : North Liberty VLBA site Four Character ID : NLIB Monument Inscription : 4007-S North Liberty-VLBA GPS Station Mark-JPL : 1992 NASA FLINN Site-North American High : Precision Fiducial Network-Blewett and : Clark-Space Geodetic Pioneers-JPL/GSFC : Collaboration IERS DOMES Number : 40465M001 CDP Number : (XXXX) Date Installed : 05-MAR-1993 hh:mm UT Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc) Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY) Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (1-10 cm/10-50 cm/50-200 cm/over 200 cm) Notes : (multiple lines) Additional Information : Type of Monument: 0.455 meter diameter stainless : steel plate set flush in the center of a 0.610 : meter diameter concrete monolith that projects : 0.465 meters above the ground. : Monument information from "NASA Space Geodesy : Program: Catalogue of Site Information", : Technical Memorandum 4482, March 1993, p385. 2. Site Location Information City or Town : North Liberty State or Province : Iowa Country : USA Tectonic Plate : North American Approximate Position X coordinate (m) : -130934.4493 Y coordinate (m) : -4762291.7386 Z coordinate (m) : 4226854.6638 Latitude (deg) : 41.77159110 Longitude (deg) : -91.57489291 Elevation (m) : 207.0648 Additional Information : Latitude, Longitude and Elevation derived from : "IERS Technical Note 20, Results and Analysis : of the ITRF94" March 1996; Table 6 "ITRF94 : Class B Station Coordinates at Epoch 1993.0", : pT67. : The NRAO VLBA station is located in east central : Iowa approximately 3 miles north of the town of : North Liberty, and 20 miles south of Cedar : Rapids. To reach the station from the North : Liberty Post Office, located at the intersection : of North Front Street and Dubuque Street, : proceed north on North Front Street 0.20 miles : to the "T" intersection on the left (west) with : Penn Street. Continue straight onto State Route : F-28 and proceed 2.0 miles to the "T" : intersection on the left (west) with County Road : 47, a dirt road and a locked gate (obtain prior : approval from NRAO). Turn left (west) onto : County Road 47, passing through the gate and : proceed 0.2 miles to the NRAO site gate and : station. The site is enclosed by an 8 foot chain : link fence. : Site information from "NASA Space Geodesy : Program: Catalogue of Site Information", : Technical Memorandum 4482, March 1993, p383. 3. GPS Receiver Information 3.1 Receiver Type : ROGUE SNR-8000 Serial Number : T102 Firmware Version : 2.6-93/01/08 Date Installed : 05-MAR-1993 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 3.2 Receiver Type : ROGUE SNR-8000 Serial Number : T102 Firmware Version : 2.8-93/06/08 Date Installed : 15-JUN-1993 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 3.3 Receiver Type : ROGUE SNR-8000 Serial Number : T102 Firmware Version : 94/10/10-17:01:54 Date Installed : 24-OCT-1994 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 3.x Receiver Type : Serial Number : Firmware Version : Date Installed : (dd-MMM-yyyy hh:mm UT) Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 4. GPS Antenna Information 4.1 Antenna Type : AOAD/M_T Serial Number : 102 Antenna Height (m) : 0.061 Antenna Reference Point : ARP Degree Offset from North : Antenna Radome Type : JPL design Date Installed : 05-MAR-1993 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 4.x Antenna Type : Serial Number : Antenna Height (m) : (m) Antenna Reference Point : (ARP/BCR/BPA) Degree Offset from North : Antenna Radome Type : Date Installed : (dd-MMM-yyyy hh:mm UT) Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 5. Local Site Ties 5.1 Monument Name : NLIB 7612 Site Ref CDP Number : 7612 Site Ref Domes Number : 40465S001 Differential Components from GPS Mark to Site Reference (ITRS) dx (m) : 62.2278 dy (m) : -25.3872 dz (m) : -3.6259 Accuracy (mm) : (mm) Date Measured : (dd-MMM-yyyy hh:mm UT) Additional Information : VLBA reference point 6. Frequency Standard 6.1 Standard Type : H-MASER Frequency : Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 6.x Standard Type : (H-MASER/CESIUM/QUARTZ/INTERNAL/RUBIDIUM) Frequency : Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 7. Collocation Information 7.x Instrumentation Type : VLBI Status : (PERMANENT/MOBILE) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8. Meteorological Instrumentation 8.1 Humidity Sensor Model : Manufacturer : Data Frequency : Accuracy (% rel h) : (% rel h) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.2 Pressure Sensor Model : Manufacturer : Data Frequency : Accuracy (mbar) : (mbar) Height Diff to GPS (m) : (m) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.3 Temperature Sensor Model : Manufacturer : Data Frequency : Accuracy (deg C) : (deg C) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.4 Water Vapor Radiometer : Manufacturer : Distance to GPS (m) : (m) Elev Diff to GPS (m) : (m) Effective Dates : (dd-MMM-yyyy - dd-MMM-yyyy) Notes : (multiple lines) 8.5 Other Instrumentation : (multiple lines) 9. On-Site, Point of Contact Agency Information Agency : JPL Mailing Address : 4800 Oak Grove Drive : Pasadena, CA 91109 USA 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 : Jim Normandeau/UNAVCO Telephone (primary) : 303-497-8008 Telephone (secondary) : 303-497-8002 Fax : 303-497-8028 E-mail : normando@unavco.ucar.edu Additional Information : (multiple lines) 10. Responsible Agency (if different from 9.) Agency : (multiple lines) Mailing Address : (multiple lines) Primary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : (multiple lines) 11. More Information URL for More Information : Hardcopy on File Site Map : 12/94 Site Diagram : 12/94 Horizon Mask : 12/94 Monument Description : 12/94 Site Pictures : 12/94 Additional Information : (multiple lines) Antenna Graphics with Dimensions TURBOROGUE: DORNE MARGOLIN T ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | =| | +------x------+ <-- 0.000 ARP <-- 0.381 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering