HOLC 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) : Michael Scharber Date Prepared : 2002-08-21 Report Type : DYNAMIC If Update: Previous Site Log : holc_20010223.log Modified/Added Sections : 11,13 1. Site Identification of the GNSS Monument Site Name : Holcomb Ridge Four Character ID : HOLC Monument Inscription : IERS DOMES Number : 40404M101 CDP Number : (A4) Monument Description : (PILLAR/BRASS PLATE/STEEL MAST/etc) Height of the Monument: (m) Monument Foundation : (STEEL RODS/CONCRETE BLOCK/ROOF/etc) Foundation Depth : (m) Marker Description : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc) Date Installed : 1994-08-12T00:00Z Geologic Characteristic : BEDROCK Bedrock Type : METAMORPHIC (MARBLE) Bedrock Condition : JOINTED Fracture Spacing : 1-10 cm Fault Zones Nearby : (YES/NO/Name of the zone) Distance/activity : (multiple lines) Additional Information : 3/4" diameter, stainless steel rod with : removable brass adaptor atop vertical rod. : Hard limestone foundation, 4 10-12 foot : stainless steel rods - one vertical, three : oblique, welded above surface. Vertical datum : is a filed notch in the vertical rod. Legs are : isolated from shallow rock and soil by PVC in : the uppermost ~5'. Antenna housing is Kearney- : Powerglass fiberglass (rounded rectangular : shape). Antenna is mounted low to the ground. : SCIGN - Southern California Integrated GPS : Network 2. Site Location Information City or Town : Pearblossom State or Province : California Country : USA Tectonic Plate : North America Pacific Approximate Position (ITRF) X coordinate (m) : -2459518.02 Y coordinate (m) : -4655992.24 Z coordinate (m) : 3589168.81 Latitude (N is +) : +342736.00 Longitude (E is +) : -1175100.00 Elevation (m,ellips.) : 1238.17 Additional Information : Los Angeles County. : Reference frame used is (ITRF97). : Coordinate system used is (WGS84). 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : 03377 Firmware Version : NAV 1D00, CHN 1C01 Elevation Cutoff Setting: (deg) Date Installed : 1994-08-12T00:00Z Date Removed : 1995-04-15T00:00Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : First measurements 3.2 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : 460 Firmware Version : 1D00 Elevation Cutoff Setting: (deg) Date Installed : 1995-04-15T00:00Z Date Removed : 1995-05-15T00:00Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : PJ: added this entry to DB based on rinex, : not in pre-DB log file 3.3 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : 04368 Firmware Version : NAV 1E24, CHN 1C70 Elevation Cutoff Setting: (deg) Date Installed : 1995-05-15T00:00Z Date Removed : 1996-09-24T00:00Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : exchanged Loaner #1 for USGS rec/ant unit 3.4 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : 04368 Firmware Version : NAV 1E95 1D01 Elevation Cutoff Setting: (deg) Date Installed : 1996-09-24T00:00Z Date Removed : 1998-08-14T00:00Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : firmware upgrade 3.5 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP03008 Firmware Version : 1F50 Elevation Cutoff Setting: (deg) Date Installed : 1998-08-14T00:00Z Date Removed : 1998-12-30T00:00Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Previous receiver locked up after lightning : strike 3.6 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP02896 Firmware Version : CB00 Elevation Cutoff Setting: (deg) Date Installed : 1998-12-30T00:00Z Date Removed : 1999-06-22T18:00Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Previous receiver produced incomplete files 3.7 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP02896 Firmware Version : CC00 Elevation Cutoff Setting: 10 Date Installed : 1999-06-22T18:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Firmware upgrade for GPS week : rollover-compliance. 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. GPS Antenna Information 4.1 Antenna Type : ASH700718B Serial Number : 10293 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0876 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 : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 1994-08-12T00:00Z Date Removed : 1995-05-15T00:00Z Additional Information : field measurement 10.35 cm to base of wide part 4.2 Antenna Type : ASH700718B Serial Number : 10485 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0870 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 : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 1995-05-15T00:00Z Date Removed : 1995-05-26T00:00Z Additional Information : field measurement 10.30 cm to base of wide : part of antenna base reduced by 1.6 cm : correction (to base of narrow part) exchanged : Loaner #1 for USGS rec/ant unit 4.3 Antenna Type : ASH700936A_M Serial Number : 11477 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0850 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 : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 1995-05-26T00:00Z Date Removed : 1999-12-08T00:00Z Additional Information : same filed notch used as vertical datum. DM : type antenna installed, old LGP antenna 4.4 Antenna Type : ASH700936E_C Serial Number : CR14570 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0825 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 : CAFG Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 1999-12-08T00:00Z Date Removed : 2001-02-21T00:00Z Additional Information : old antenna removed due to slow failure-- : possible lightning strike damage weeks earlier. 4.5 Antenna Type : ASH701945B_M Serial Number : CR519991924 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0850 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 : CAFG Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 2001-02-21T00:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : Gray antenna removed and upgraded with new : SCIGN cast antenna. 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 : 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) 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 : 1994-08-12/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 7.1 Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) Status : (PERMANENT/MOBILE) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 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 : 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 : 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 : 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 : 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) 8.5.1 Other Instrumentation : (multiple lines) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) 8.5.x Other Instrumentation : (multiple lines) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) 9. Local Ongoing Conditions Possibly Affecting Computed Position 9.1.1 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) 9.1.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) 9.2.1 Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/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) 9.3.1 Signal Obstructions : (TREES/BUILDINGS/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 10.1 Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 10.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : United States Geological Survey Preferred Abbreviation : (A10) Mailing Address : Pasadena Field Office, 525 S. Wilson Ave., : Pasadena CA 91106 Primary Contact Contact Name : Keith Stark Telephone (primary) : 626-583-6729 Telephone (secondary) : 818-542-5930 Fax : 626-583-7827 E-mail : stark@gps.caltech.edu Secondary Contact Contact Name : Paul Jamason Telephone (primary) : 858-822-4472 Telephone (secondary) : 858-663-3508 Fax : 858-534-9873 E-mail : pjamason@ucsd.edu Additional Information : (Primary) SCIGN Network Coordinator 12. Responsible Agency (if different from 11.) Agency : (multiple lines) Preferred Abbreviation : (A10) 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) 13. More Information Primary Data Center : Scripps Orbit and Permanent Array Center Secondary Data Center : Crustal Dynamics Data Information System URL For More Information: http://www.scign.org Hardcopy on File Site Map : (Y or URL) Site Diagram : (Y or URL) Horizon Mask : (Y or URL) Monument Description : (Y or URL) Site Pictures : (Y or URL) Additional Information : (multiple lines) Antenna Graphics with Dimensions (insert text graphic from antenna.gra)