LONG Site Information Form International GPS Service for Geodynamics 0. Form Prepared by (full name) : Ken Hudnut, John Galetzka Date Prepared : 31-OCT-1997 Report Type : UPDATE Prepared Using : 1. Site Identification of the GPS Monument Site Name : Longdon Yard (SCIGN/PGGA) Four Character ID : LONG Monument Inscription : N/A IERS DOMES Number : 40485M001 CDP Number : (XXXX) Date Installed : 17-NOV-1994 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 : Driven-rod monument of stainless 3/4" steel : that forms a braced tripod (rods driven to : approx. 30+ foot depth). Antenna mounts on a : removable brass adaptor. Rods were driven with : a Whacker drill, but 'refusal' was not attained. : Soil here is coarse alluvium in the uppermost : few feet, but fine unconsolidated allumvium : below that. An approx. 4' dia. metal conduit : was emplaced around the uppermost 5' of the : monument (below ground) to isolate from soil : motion. Antenna and conduit are covered by a : large hemispherical polycarbonate dome. : Vertical datum is top of a filed notch in : vertical 3/4" rod. : Located at Los Angeles County Facility. SCIGN - : Southern California Integrated GPS Network 2. Site Location Information City or Town : Irwindale, Los Angeles County State or Province : California Country : USA Tectonic Plate : Pacific-North American plate boundary Approximate Position X coordinate (m) : -2482077.300 Y coordinate (m) : -4667439.331 Z coordinate (m) : 3556771.581 Latitude (deg) : ( dd.dddd N/S) Longitude (deg) : (ddd.dddd E/W) Elevation (m) : (m) Additional Information : ITRF92 coordinates. Epoch 1995.25 3. GPS Receiver Information 3.1 Receiver Type : ASHTECH ZX-II3 (Z12) Model 700570-6B Serial Number : 03373 (Loaner # 3) Firmware Version : NAV 1D00, CHN 1C01 Date Installed : 17-NOV-1994 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : First measurements 3.2 Receiver Type : ASHTECH Low Power Z-XII (Z12) Model 700845-1(1) Serial Number : 04356 (USGS Property #G-615686) Firmware Version : NAV 1E24, CHN 1C70 Date Installed : 04-APR-1995 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : exchanged Loaner #3 for USGS unit (1 MB RAM) 3.3 Receiver Type : ASHTECH Low Power Z-XII (Z12) Model 700845-6(1) Serial Number : 04377 (USGS Property #G-615685) Firmware Version : NAV 1E24, CHN 1C70 Date Installed : 06-APR-1995 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : exchanged USGS units (RAM upgrade). Sometime : between 06-APR-1995 and 19-MAY-1995 the : receiver may have been exchanged but no field : log written? 3.4 Receiver Type : ASHTECH Low Power Z-XII (Z12) Model 700845-6(1) Serial Number : 04366 (USGS Property #G-615684) Firmware Version : NAV 1E24, CHN 1C70 Date Installed : 19-MAY-1995 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : may have changed receiver - inconsistent S/N's : between this day's log sheet and previous one. 3.5 Receiver Type : ASHTECH Low Power Z-XII (Z12) Model 700845-6(1) Serial Number : 04366 (USGS Property #G-615684) Firmware Version : NAV 1E95 1D01 Date Installed : 05-SEP-1996 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : firmware upgrade 3.6 Receiver Type : ASHTECH Low Power Z-XII (Z12) Model 700845-6(1) Serial Number : 04366 (USGS Property #G-615684) Firmware Version : NAV 1E95 1D01 Date Installed : 2-JAN-1997 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : no changes to receiver at this time 3.7 Receiver Type : ASHTECH Low Power Z-XII (Z12) Model 700845-6(1) Serial Number : 350 (Z-12 loaner) Firmware Version : NAV 1E95 1D01 Date Installed : 06-MAR-1997 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : Rx not collecting data nor communicating. Rx : swapped with loaner rx. 3.8 Receiver Type : ASHTECH Low Power Z-XII (Z12) Model 700845-6(1) Serial Number : 04366 (USGS Property #G-615684) Firmware Version : NAV 1E95 1D01 Date Installed : 31-MAR-1997 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : Repaired rx returned from Ashtech 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 : ASHTECH L1/L2 P Model 700718-B (Lg Ground Plane) Serial Number : 10329 Antenna Height (m) : 0.1475 Antenna Reference Point : BPA Degree Offset from North : Antenna Radome Type : Date Installed : 17-NOV-1994 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : vertical datum mark is filed notch on 3/4" : vertical rod. Field measurement (16.35 cm) was : to wide part of antenna base, and a correction : of 1.6 cm was subtracted to get narrow part BPA 4.2 Antenna Type : ASHTECH L1/L2 P Model 700718-B (Lg Ground Plane) Serial Number : 10858 Antenna Height (m) : 0.1490 Antenna Reference Point : BPA Degree Offset from North : Antenna Radome Type : Date Installed : 04-APR-1995 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : Field measurements to both the narrow and wide : part were made and check OK 4.3 Antenna Type : ASHTECH L1/L2 P Model 700718-B (Lg Ground Plane) Serial Number : 10858 Antenna Height (m) : 0.1490 Antenna Reference Point : BPA Degree Offset from North : Antenna Radome Type : Date Installed : 06-APR-1995 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : No changes to antenna. 4.4 Antenna Type : ASHTECH Model 700936-A (Metal Choke Ring) Serial Number : 11476 Antenna Height (m) : 0.1480 Antenna Reference Point : ARP/BPA Degree Offset from North : Antenna Radome Type : Date Installed : 19-MAY-1995 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : same filed notch used as vertical datum approx. : 19-MAY-1995. LGP antenna replaced with DM type 4.5 Antenna Type : ASHTECH Model 700936-A (Metal Choke Ring) Serial Number : 11476 Antenna Height (m) : 0.1480 Antenna Reference Point : ARP/BPA Degree Offset from North : Antenna Radome Type : Date Installed : 05-SEP-1995 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : no changes to antenna. 4.6 Antenna Type : ASHTECH Model 700936-A (Metal Choke Ring) Serial Number : 11476 Antenna Height (m) : 0.1480 Antenna Reference Point : ARP/BPA Degree Offset from North : Antenna Radome Type : Date Installed : 02-JAN-1997 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : Antenna was previously aligned to N20E and had a : missile cone cover along with a plexiglass dome. : ANTENNA NOW ALIGNED TO N +/- 1 DEGREE; TOOK : MISSILE CONE COVER OFF as of 02-JAN-97. 4.7 Antenna Type : ASHTECH Model 700936-A (Metal Choke Ring) Serial Number : 11476 Antenna Height (m) : 0.1480 Antenna Reference Point : ARP/BPA Degree Offset from North : Antenna Radome Type : Date Installed : 06-Mar-1997 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : same filed notch used as vertical datum approx. : No changes to antenna. 4.8 Antenna Type : ASHTECH Model 700936-A (Metal Choke Ring) Serial Number : 11476 Antenna Height (m) : 0.1480 Antenna Reference Point : ARP/BPA Degree Offset from North : Antenna Radome Type : Date Installed : 31-Mar-1997 hh:mm UT Date Removed : (dd-MMM-yyyy hh:mm UT) Additional Information : No changes to antenna. 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.x Monument Name : Site Ref CDP Number : (XXXX) Site Ref Domes Number : (XXXXXXXXX) Differential Components from GPS Mark to Site Reference (ITRS) dx (m) : (m) dy (m) : (m) dz (m) : (m) Accuracy (mm) : (mm) Date Measured : (dd-MMM-yyyy hh:mm UT) Additional Information : (multiple lines) 6. Frequency Standard 6.1 Standard Type : INTERNAL Frequency : Effective Dates : 17-NOV-1994 - 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 : (DORIS/GLONASS/PRARE/SLR/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 : U.S. Geological Survey Mailing Address : 525 South Wilson Ave. : Pasadena, CA 91106 Primary Contact Contact Name : Kenneth W. Hudnut Telephone (primary) : 818-583-7232 Telephone (secondary) : Fax : 818-583-7827 E-mail : hudnut@usgs.gov Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : 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 : (Y) Site Diagram : (Y) Horizon Mask : (Y) Monument Description : (Y) Site Pictures : (Y) Additional Information : (multiple lines) Antenna Graphics with Dimensions ASHTECH: Metal Choke Ring Type NOTE: Dimensions and Offsets Presumed to be same as for TURBOROGUE DM-T (tests pending) ----- / + \ <-- 0.128 L2 | + | <-- 0.110 L1 +--------------------------------------------------+ <-- 0.102 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.038 +-------------------+-------------+--------------------+ <-- 0.035 BCR | | =| | +------x------+ <-- 0.000 ARP -0.148 m ARP to vert datum mark <-- 0.381 --> LGP antenna replaced by DM type on approx. May 19, 1995 ASHTECH: GEODETIC L1/L2 P Large Ground Plane ^ +-------------------+ +-+--+-+-------+-----------+-----------+--------+-+--+-+ <-- 0.064 TGP=L1=L2 +-+--+-+------------+-------------+-------------+-+--+-+ <-- 0.??? BGP |-------------| |-------------| +-------------+ <-- 0.016 |---| (wide part) +-x-+ <-- 0.000 ARP=BPA (narrow part) -0.1490 BPA to vert datum mark <-- 0.080 --> <-- 0.3474 --> 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