DHLG00USA Site Information Form (site log) International GNSS Service See Instructions at: ftp://igs.org/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : David Maggert Date Prepared : 2019-04-03 Report Type : UPDATE If Update: Previous Site Log : dhlg_20151124.log Modified/Added Sections : 11 1. Site Identification of the GNSS Monument Site Name : Durmid Hill Four Character ID : DHLG Monument Inscription : IERS DOMES Number : 49904M001 CDP Number : Monument Description : Wyatt/Agnew driven-braced Height of the Monument : Monument Foundation : Foundation Depth : Marker Description : vertical rod divot Date Installed : 1996-04-24T02:50Z Geologic Characteristic : SEDIMENTARY ROCK Bedrock Type : SANDSTONE/MUDSTONE Bedrock Condition : Fracture Spacing : Fault zones nearby : Distance/activity : Additional Information : stainless steel 3/4 in. rods driven to refusal : (24 ft. depth), welded together ~1.5m above : surface Wyatt-design adaptor, looks like a : SCIGN D3 prototype 2. Site Location Information City or Town : Durmid Hill State or Province : California Country : United States Tectonic Plate : NORTH AMERICAN Approximate Position (ITRF) X coordinate (m) : -2319099.2600 Y coordinate (m) : -4799846.5000 Z coordinate (m) : 3490090.4500 Latitude (N is +) : +332323.30 Longitude (E is +) : -1154716.90 Elevation (m,ellips.) : -83.05 Additional Information : Imperial County. 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP01378 Firmware Version : 1E86-1D01 Elevation Cutoff Setting : Date Installed : 1996-04-24T02:50Z Date Removed : 1997-01-23T05:10Z Temperature Stabiliz. : Additional Information : Initial measurements. 3.2 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP01389 Firmware Version : 1E95-1D01 Elevation Cutoff Setting : Date Installed : 1997-01-23T05:10Z Date Removed : 1998-03-12T22:00Z Temperature Stabiliz. : Additional Information : Firmware upgrade, receiver swap 3.3 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP01389 Firmware Version : 1F50 Elevation Cutoff Setting : Date Installed : 1998-03-12T22:00Z Date Removed : 1998-07-02T22:00Z Temperature Stabiliz. : Additional Information : Firmware upgrade for MET3 met pack install 3.4 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP03044 Firmware Version : 1F50 Elevation Cutoff Setting : Date Installed : 1998-07-02T22:00Z Date Removed : 1999-07-14T20:00Z Temperature Stabiliz. : Additional Information : SCIGN receiver swap, battery backup upgrade . : ASHTECH LP Z-XII 700845-10F 3.5 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP02790 Firmware Version : CC00 Elevation Cutoff Setting : 10 deg Date Installed : 1999-07-14T20:00Z Date Removed : 1999-12-23T23:00Z Temperature Stabiliz. : Additional Information : Receiver swap for GPS week rollover-compliance. 3.6 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP02767 Firmware Version : CC00 Elevation Cutoff Setting : 10 deg Date Installed : 1999-12-23T23:00Z Date Removed : 2004-09-10T22:15Z Temperature Stabiliz. : Additional Information : Receiver swap due to comm. : problems 3.7 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP02767 Firmware Version : CC00 Elevation Cutoff Setting : 0 deg Date Installed : 2004-09-10T22:15Z Date Removed : 2010-10-10T22:27Z Temperature Stabiliz. : Additional Information : Sampling interval increased to 1Hz (with : realtime telemetry) and elevation mask set to 3.8 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP023011 Firmware Version : CC00 Elevation Cutoff Setting : 0 deg Date Installed : 2010-10-10T22:27Z Date Removed : 2011-05-04T17:42Z Temperature Stabiliz. : Additional Information : Ligntning event damaged prior unit. 3.9 Receiver Type : TPS NET-G3A Satellite System : GPS Serial Number : 618-01037 Firmware Version : 3.5 May 06, 2010 Elevation Cutoff Setting : 5 deg Date Installed : 2011-05-04T22:11Z Date Removed : 2013-07-24T23:18Z Temperature Stabiliz. : Additional Information : 3.10 Receiver Type : TPS NET-G3A Satellite System : GPS Serial Number : 618-01037 Firmware Version : 4.0 Dec,21,2012 p1 Elevation Cutoff Setting : 5 deg Date Installed : 2013-07-24T23:36Z 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 SNOW Serial Number : CR12656 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.1214 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SNOW Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 1996-04-24T02:50Z Date Removed : 2000-04-06T00:00Z Additional Information : Antenna height is measured from the center of : the hole (referred to above) to the BPA. : ASHTECH Choke Ring 700936 4.2 Antenna Type : ASH701945B_M SCIS Serial Number : CR519991761 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.1224 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SCIS Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 2000-04-06T00:00Z Date Removed : 2010-10-10T22:27Z Additional Information : 4.3 Antenna Type : ASH701945C_M SCIS Serial Number : CR520001205 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.1224 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SCIS Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 2010-10-10T22:27Z Date Removed : 2012-06-21T22:33Z Additional Information : Prior unit damaged by lightning event. 4.4 Antenna Type : TPSCR.G3 SCIS Serial Number : 383-1895 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.1224 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : SCIS Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 2012-06-21T22:43Z 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 6.1 Standard Type : INTERNAL Input Frequency : Effective Dates : 1996-04-24/CCYY-MM-DD Notes : 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 8.1.1 Humidity Sensor Model : MET3 Manufacturer : Paroscientific Serial Number : 69818 Data Sampling Interval : 600 sec Accuracy (% rel h) : 2 Aspiration : Height Diff to Ant : unknown m Calibration date : (CCYY-MM-DD) Effective Dates : 1998-03-12/2012-05-04 Notes : 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 : MET3 Manufacturer : Paroscientific Serial Number : 69818 Data Sampling Interval : 600 sec Accuracy : 0.5 hPa Height Diff to Ant : unknown m Calibration date : (CCYY-MM-DD) Effective Dates : 1998-03-12/2012-05-04 Notes : 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 : MET3 Manufacturer : Paroscientific Serial Number : 69818 Data Sampling Interval : 600 sec Accuracy : 0.5 deg C Aspiration : Height Diff to Ant : unknown m Calibration date : Effective Dates : 1998-03-12/2012-05-04 Notes : 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 : USGS Preferred Abbreviation : USGS Mailing Address : USGS Pasadena Field Office : 525 South Wilson Avenue : Pasadena, CA. 91107 Primary Contact Contact Name : Ken Hudnut Telephone (primary) : 626-583-7232 Telephone (secondary) : Fax : 626-583-7827 E-mail : hudnut@usgs.gov Secondary Contact Contact Name : Evelyn Roeloffs Telephone (primary) : Telephone (secondary) : Fax : E-mail : evelynr@usgs.gov Additional Information : 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 : 13. More Information Primary Data Center : SIO Secondary Data Center : CDDIS URL for More Information : http://www.unavco.org Hardcopy on File Site Map : Site Diagram : Horizon Mask : Monument Description : Site Pictures : Additional Information : Antenna Graphics with Dimensions TPSCR.G3 +-------+ / \ | | +-----------------+-------------+-----------------+ <-- 0.1015 TCR | | | | | | | | +-+-------------------------------------------------+-+ +-------------------+-------------+-------------------+ <-- 0.0345 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP <-- 0.2380 --> <-- 0.3800 -->