PKDB 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) : Mario Aranha Date Prepared : 2023-05-06 Report Type : UPDATE If Update: Previous Site Log : pkdb_20220407.log Modified/Added Sections : 1,3.7,4.2 1. Site Identification of the GNSS Monument Site Name : Bear Valley Ranch, Parkfield, CA Four Character ID : PKDB Monument Inscription : IERS DOMES Number : 49428M001 CDP Number : Monument Description : CONCRETE PILLAR Height of the Monument : Monument Foundation : Foundation Depth : Marker Description : Date Installed : 1996-09-20T19:55Z Geologic Characteristic : BEDROCK Bedrock Type : Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : Reinforced concrete monument, approximately 1m : high. Monument is fastened to underlying rock : with cemented reinforcing rods. Threaded 5/8" : rod cemented about 0.8m deep into concrete. : Antenna threads onto rod. Mark is a virtual : reference point in the center of the rod at the : top of washer epoxied nearest parapet. Site : replaced by PKDG due to installation of a SCIGN : mount. : 2023-05-06 site decommissioned 2. Site Location Information City or Town : North of Parkfield State or Province : California Country : USA Tectonic Plate : Pacific-North America plate boundary Approximate Position (ITRF) X coordinate (m) : -2627227.1482 Y coordinate (m) : -4452757.2003 Z coordinate (m) : 3723620.6338 Latitude (N is +) : +355642.87 Longitude (E is +) : -1203229.63 Elevation (m,ellips.) : 589.8783 Additional Information : Located on private Bear Valley Ranch adjacent to : seismic vault. X,Y,Z is GAGE3 IGb14 epoch : 2020.7077 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP01394 Firmware Version : 1E86 Elevation Cutoff Setting : Date Installed : 1996-09-20T19:55Z Date Removed : 1999-07-28T00:00Z Temperature Stabiliz. : Additional Information : 3.2 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP01394 Firmware Version : CC00 Elevation Cutoff Setting : Date Installed : 1999-07-28T00:00Z Date Removed : 2009-04-21T23:22Z Temperature Stabiliz. : Additional Information : 3.3 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4610206095 Firmware Version : 1.1-3 Elevation Cutoff Setting : Date Installed : 2009-04-21T23:22Z Date Removed : 2009-10-07T17:30Z Temperature Stabiliz. : Additional Information : 3.4 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4610206095 Firmware Version : 1.1-5 Elevation Cutoff Setting : Date Installed : 2009-10-07T17:30Z Date Removed : 2010-09-29T20:38Z Temperature Stabiliz. : Additional Information : 3.5 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4610206095 Firmware Version : 1.3-0 Elevation Cutoff Setting : Date Installed : 2010-09-29T20:38Z Date Removed : 2015-08-19T00:17Z Temperature Stabiliz. : Additional Information : 3.6 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4610206095 Firmware Version : 1.3-2 Elevation Cutoff Setting : Date Installed : 2015-08-19T00:17Z Date Removed : 2020-07-24T19:42Z Temperature Stabiliz. : Additional Information : 3.7 Receiver Type : SEPT POLARX5 Satellite System : GPS+GLONASS Serial Number : 3052395 Firmware Version : 5.3.0 Elevation Cutoff Setting : Date Installed : 2020-07-24T19:42Z Date Removed : 2023-05-06T00:00Z Temperature Stabiliz. : Additional Information : shipping S/N 4502939, UC Prop# 20191000963 : 2023-05-06 site decommissioned 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 : ASH700936D_M NONE Serial Number : 12616 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0582 Marker->ARP North Ecc(m) : Marker->ARP East Ecc(m) : Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 1996-09-20T19:55Z Date Removed : 1999-07-28T00:00Z Additional Information : 4.2 Antenna Type : ASH700936D_M SCIS Serial Number : 12616 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0582 Marker->ARP North Ecc(m) : Marker->ARP East Ecc(m) : Alignment from True N : 0 Antenna Radome Type : SCIS Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 1999-07-28T00:00Z Date Removed : 2023-05-06T00:00Z Additional Information : : 2023-05-06 site decommissioned 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.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.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 : UC Berkeley Preferred Abbreviation : BARD Mailing Address : University of California, Berkeley, 307 McCone : Hall #4760, Berkeley CA 94720-4760 Primary Contact Contact Name : Mario Aranha Telephone (primary) : 510-643-3898 Telephone (secondary) : Fax : E-mail : mario@seismo.berkeley.edu Secondary Contact Contact Name : Jonah Merritt Telephone (primary) : Telephone (secondary) : Fax : E-mail : jmerritt@berkeley.edu Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : Preferred Abbreviation : Mailing Address : 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 : NCEDC Secondary Data Center : URL for More Information : https://ncedc.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 : Antenna Graphics with Dimensions https://files.igs.org/pub/station/general/antenna.gra