CHAT Site Information Form (site log) International GNSS Service See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Elisabetta D'Anastasio Date Prepared : 2014-07-25 Report Type : UPDATE If Update: Previous Site Log : chat_20120613.log Modified/Added Sections : modified: 0, 1, 2, 4.2, 8.1.1, 8.2.1, 8.3.1, 13 1. Site Identification of the GNSS Monument Site Name : Chatham Island Four Character ID : CHAT Monument Inscription : none IERS DOMES Number : 50207M001 CDP Number : not Monument Description : CONCRETE PILLAR Height of the Monument : 0.7 m Monument Foundation : CONCRETE BLOCK Foundation Depth : 0.5 m Marker Description : CENTER OF STAINLESS PLATE Date Installed : 1995-10-04T00:00Z Geologic Characteristic : Early Eocene tuff Bedrock Type : VOLCANIC EXTRUSIVES Bedrock Condition : NOT APPLICABLE Fracture Spacing : unknown Fault zones nearby : NO Distance/activity : Additional Information : The site is located on early Eocene Red Bluff : tuff, which weathers to a sticky clay. A test : drill hole in 1973 revealed a 2.5' crust of : clayey soil with a very firm 1' layer beneath : it. Underlying this is about 100' of sometimes : firm and sometimes soft waterlogged soil, with : firm layers between 100'-110', and rock : encountered at 110'. The rock type at basement : is not indicated, but may be late Cretaceous : extrusive volcanics. : The GPS station was installed at this site for : convenience of access to power and telephone. : It is intended to install a new seismic station : on a hard rock site on the Chatham Islands : within the next few years; we will investigate : the possibility of moving the GPS receiver to : colocate with the seismic station at that time. : A preexisting 0.6 m x 0.8 m x 0.5 m deep : seismometer vault was utilised for the : monument. The vault has been in place for many : years and is presumably founded in the "very : firm" layer described above at about 2. Site Location Information City or Town : Waitangi State or Province : Chatham Island Country : New Zealand Tectonic Plate : PACIFIC Approximate Position (ITRF) X coordinate (m) : -4590671.0 Y coordinate (m) : -275482.9 Z coordinate (m) : -4404596.7 Latitude (N is +) : -435720.88 Longitude (E is +) : -1763356.88 Elevation (m,ellips.) : 57.981 Additional Information : The antenna is mounted on a 0.7 m high pillar : inside a low fence, located on the grounds of : the NZ MetService station. The receiver and : other equipment are inside a padlocked hut : about 25 m from the antenna. Communication is : by phone. 3. GNSS Receiver Information 3.1 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : T133 Firmware Version : 3.2, field config. 8, 95/02/28 Elevation Cutoff Setting : Date Installed : 1995-10-04T00:00Z Date Removed : 1999-05-19T21:45Z Temperature Stabiliz. : Additional Information : 3.2 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : T133 Firmware Version : 3.2.32.8 Elevation Cutoff Setting : Date Installed : 1999-05-19T21:50Z Date Removed : 2001-11-28T00:00Z Temperature Stabiliz. : Additional Information : 3.3 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP419994101 Firmware Version : CD00 Elevation Cutoff Setting : Date Installed : 2001-11-28T03:00Z Date Removed : CCYY-MM-DDThh:mmZ Temperature Stabiliz. : Additional Information : A receiver with choke-ring antenna was run at : site 5503 about 60 metres from CHAT for 1-2 : days before and after the exchange of the CHAT : receiver and antenna. The data will be used to : determine whether there is any apparent position 3.4 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP01192 Firmware Version : CC00 Elevation Cutoff Setting : Date Installed : 2002-02-20T01:00Z Date Removed : 2002-03-28T00:00Z Temperature Stabiliz. : Additional Information : Exchanged due to receiver failure. Data lost : from part way through day 037 to near the start : of day 051. 3.5 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : LP419994101 Firmware Version : CD00 Elevation Cutoff Setting : Date Installed : 2002-03-28T00:10Z Date Removed : 2012-03-06T17:38Z Temperature Stabiliz. : Additional Information : Original receiver (see item 3.3) repaired and : replaced. : Station terminated 6 March 2012 due to : equipment failure. CHTI is now the IGS site : on Chatham Island. 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 : AOAD/M_T NONE Serial Number : 142 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0031 Marker->ARP North Ecc(m) : Marker->ARP East Ecc(m) : Alignment from True N : 0 deg Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 1995-10-04T00:00Z Date Removed : 2001-11-28T00:00Z Additional Information : 4.2 Antenna Type : ASH701945C_M NONE Serial Number : 19993903 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0062 Marker->ARP North Ecc(m) : 000.0000 Marker->ARP East Ecc(m) : 000.0000 Alignment from True N : 0 deg Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Antenna Cable Length : Date Installed : 2001-11-28T03:00Z Date Removed : 2012-03-06T17:38Z Additional Information : Station terminated 6 March 2012 due to : equipment failure. CHTI is now the IGS site : on Chatham Island. 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 : 5503 Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 36.5275 dy (m) : 3.6587 dz (m) : -39.7829 Accuracy (mm) : 1 mm Survey method : Date Measured : 1999-02-28T00:00Z Additional Information : "5503" is the Geodetic Code for this monument : in the Land Information NZ Geodetic Database. : The values for dx, dy, dz and accuracy are : the mean and standard deviation of six : measurements between Oct 1995 and Feb 1999. 5.2 Tied Marker Name : 5505 Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -20.519 dy (m) : 657.227 dz (m) : -24.860 Accuracy (mm) : 2 mm Survey method : Date Measured : 1998-11-04T00:00Z Additional Information : "5505" is the LINZ geodetic code for this : monument. : The values for dx, dy, dz and accuracy are : the mean and standard deviation of three : measurements between Oct 1995 and Nov 1998. 5.3 Tied Marker Name : DORIS monument Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 26.4382 dy (m) : 46.4134 dz (m) : -30.3750 Accuracy (mm) : 1 mm Survey method : Date Measured : 1999-02-27T00:00Z Additional Information : DORIS station newly installed by IGN in : February 1999. 5.4 Tied Marker Name : Tidal bench mark, installed Feb 1999 Tied Marker Usage : Tied Marker CDP Number : Tied Marker DOMES Number : Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : -701.430 dy (m) : -490.358 dz (m) : 821.309 Accuracy (mm) : 2 mm Survey method : Date Measured : 1999-02-25T00:00Z Additional Information : New bench mark installed on concrete : wharf at Waitangi, reasonably close to : Chatham Island tide gauge. Installation : by Herve Fagard, IGN, Feb 1999. 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 : 1995-10-04/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 7.1 Instrumentation Type : DORIS Status : PERMANENT Effective Dates : 1999-02-27/CCYY-MM-DD Notes : 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 : MP300 Manufacturer : Rotronic Serial Number : unknown Data Sampling Interval : 3600 sec Accuracy (% rel h) : 2 Aspiration : Height Diff to Ant : 1 m Calibration date : (CCYY-MM-DD) Effective Dates : 1995-01-01T13:54Z/2012-11-30T13:55Z Notes : Met sensors are at the NZ MetService weather : station, and predate the installation of the : GPS receiver. The sensors are calibrated : annually by NZ MetService. : Height difference to antenna accuracy is +- 2 m. : A full record through time of the co-located : met sensors is unknown. 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 : DPA21 Manufacturer : Vaisala Serial Number : unknown Data Sampling Interval : 1 hour sec Accuracy : 0.3 hPa Height Diff to Ant : 1 m Calibration date : (CCYY-MM-DD) Effective Dates : 1995-01-01T00:00Z/2012-11-30T13:53Z Notes : Height difference to antenna accuracy is +- 2 m. : A full record through time of the co-located : met sensors is unknown. Met Sensors are : operated by NZ Metservice and installation : predates the building of the GPS site 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 : YSI 703 series Manufacturer : Yellow Springs Instruments Serial Number : unknown Data Sampling Interval : 1 hour sec Accuracy : 0.2 deg C Aspiration : Height Diff to Ant : 1 m Calibration date : Effective Dates : 1995-01-01T13:55Z/2012-11-30T13:56Z Notes : Temperatures are reported to the nearest degree. 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 : GNS Science Preferred Abbreviation : GNS Mailing Address : GNS Science : 1 Fairway Drive : PO Box 30368, Lower Hutt : New Zealand Primary Contact Contact Name : GeoNet Reception Telephone (primary) : +64 4 570 1444 Telephone (secondary) : Fax : +64 4 570 4676 E-mail : info@geonet.org.nz Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : 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 : CDDIS Secondary Data Center : IGN URL for More Information : www.geonet.org.nz Hardcopy on File Site Map : GNS file 45/1/4-CHAT Site Diagram : GNS file 45/1/4-CHAT Horizon Mask : No obstructions. Monument Description : GNS file 45/1/4-CHAT Site Pictures : GNS file 45/1/4-CHAT Additional Information : GNS file 45/1/4-CHAT Antenna Graphics with Dimensions ASH701945C_M +-------+ / + \ <-- 0.1280 L2 | + | <-- 0.1100 L1 +-----------------+-------------+------------------+ <-- 0.1006 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.0376 +-------------------+-------------+--------------------+ <-- 0.0346 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP <-- 0.3890 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering