DIAB 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            : 2024-11-07
     Report Type              : UPDATE
     If Update:
      Previous Site Log       : diab_20241101.log
      Modified/Added Sections : 2 


1.   Site Identification of the GNSS Monument

     Site Name                : Mt. Diablo
     Four Character ID        : DIAB
     Monument Inscription     : 
     IERS DOMES Number        : 44519M001
     CDP Number               : 
     Monument Description     : CONCRETE PILLAR
       Height of the Monument : 
       Monument Foundation    : 
       Foundation Depth       : 
     Marker Description       : 
     Date Installed           : 1998-05-21T23:45Z
     Geologic Characteristic  : BEDROCK
       Bedrock Type           : 
       Bedrock Condition      : 
       Fracture Spacing       : 
       Fault zones nearby     : 
         Distance/activity    : 
     Additional Information   : Reinforced concrete monument, approximately 0.3m
                              : high. Monument is fastened to underlying rock
                              : with cemented reinforcing rods. Threaded 5/8"
                              : rod is cemented about 0.8m deep into concrete.
                              : Antenna threads onto rod in reproducible manner.
                              : Mark is top of washer at center of rod.


2.   Site Location Information

     City or Town             : Rural, near Concord
     State or Province        : California
     Country                  : USA
     Tectonic Plate           : Pacific-North America plate boundary
     Approximate Position (ITRF)
       X coordinate (m)       : -2665288.2079
       Y coordinate (m)       : -4279361.5203
       Z coordinate (m)       : 3895422.8297
       Latitude (N is +)      : +375242.87
       Longitude (E is +)     : -1215456.28
       Elevation (m,ellips.)  : 990.4148
     Additional Information   : X,Y,Z is IGb14 realization of ITRF14 reference
                              : frame, 2024.6066 reference epoch.


3.   GNSS Receiver Information

3.1  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : LP01387
     Firmware Version         : 1F60
     Elevation Cutoff Setting : 
     Date Installed           : 1998-05-21T23:45Z
     Date Removed             : 1999-07-21T22:12Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.2  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : LP01387
     Firmware Version         : CC00
     Elevation Cutoff Setting : 
     Date Installed           : 1999-07-21T22:12Z
     Date Removed             : 2007-02-14T20:00Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.3  Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4610206093
     Firmware Version         : 1.1-3
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2007-02-14T20:18Z
     Date Removed             : 2008-04-16T20:23Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.4  Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4610206093
     Firmware Version         : 1.1-5
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2008-04-16T20:23Z
     Date Removed             : 2010-09-29T20:10Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.5  Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4610206093
     Firmware Version         : 1.3-0
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2010-09-29T20:10Z
     Date Removed             : 2015-08-14T21:38Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.6  Receiver Type            : TRIMBLE NETRS
     Satellite System         : GPS
     Serial Number            : 4610206093
     Firmware Version         : 1.3-2
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2015-08-14T21:38Z
     Date Removed             : 2020-01-09T20:00Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.7  Receiver Type            : SEPT POLARX5
     Satellite System         : GPS+GLO
     Serial Number            : 3052109
     Firmware Version         : 5.3.0
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2020-01-09T20:00Z
     Date Removed             : 2021-01-30T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.8  Receiver Type            : SEPT POLARX5
     Satellite System         : GPS+GLO
     Serial Number            : 3052109
     Firmware Version         : 5.4.0
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2021-01-30T00:00Z
     Date Removed             : 2024-09-06T00:00Z
     Temperature Stabiliz.    : 
     Additional Information   : 

3.9  Receiver Type            : SEPT POLARX5
     Satellite System         : GPS+GLO
     Serial Number            : 3052109
     Firmware Version         : 5.5.0
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2024-09-06T00:00Z
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Temperature Stabiliz.    : 
     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             : ASH700936D_M    NONE
     Serial Number            : 12739
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.0837
     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           : 1998-05-21T23:45Z
     Date Removed             : 1999-07-22T20:52Z
     Additional Information   : 

4.2  Antenna Type             : ASH700936D_M    SCIT
     Serial Number            : 12739
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.1315
     Marker->ARP North Ecc(m) : 
     Marker->ARP East Ecc(m)  : 
     Alignment from True N    : 0
     Antenna Radome Type      : SCIT
     Radome Serial Number     : 00203
     Antenna Cable Type       : 
     Antenna Cable Length     : 
     Date Installed           : 1999-07-22T22:12Z
     Date Removed             : 2015-08-14T19:30Z
     Additional Information   : SCIGN Adaptor  0132 HI from previous refernce
                              : mark Reference mark to base = 103.5 mm Base of
                              : adapter to SCIGN mark = 19.685 mm SCIGN mark to
                              : BPA = 8.3mm

4.3  Antenna Type             : ASH700936D_M    SCIT
     Serial Number            : 12739
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.0083
     Marker->ARP North Ecc(m) : 
     Marker->ARP East Ecc(m)  : 
     Alignment from True N    : 0
     Antenna Radome Type      : SCIT
     Radome Serial Number     : 3060
     Antenna Cable Type       : 
     Antenna Cable Length     : 
     Date Installed           : 2015-08-14T19:30Z
     Date Removed             : 2023-02-03T00:00Z
     Additional Information   : Configuration Change: Mounted on SCIGN adapter
                              : s/n 0132; antenna height is standard value
                              : relative to adapter reference point, a dimpled
                              : nub; previous reference mark to adapter base =
                              : 103.5mm; adapter base to adapter reference point
                              : = 19.685mm; adapter reference point to BPA =
                              : 8.3mm; Replaced broken dome only; retained base
                              : plate

4.4  Antenna Type             : SEPCHOKE_B3E6   SPKE
     Serial Number            : 5190
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  : 0.0083
     Marker->ARP North Ecc(m) : 
     Marker->ARP East Ecc(m)  : 
     Alignment from True N    : 0
     Antenna Radome Type      : SPKE
     Radome Serial Number     : 
     Antenna Cable Type       : 
     Antenna Cable Length     : 
     Date Installed           : 2023-02-03T00:00Z
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Additional Information   : 

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