CHATHAM ISLAND DORIS site description form


0. Form

   Prepared by       : SIMB (DORIS installation and maintenance department)
   Date prepared     : 13/11/2000
   Report type       : NEW


1. Site location information

   Site name               : CHATHAM ISLAND
   Site DOMES number       : 50207
   Host agency             : MetService
   City                    : Waitangi
   State or province       : Chatham Islands
   Country                 : NEW ZEALAND
   Tectonic plate          : PCFC
   Geological information  : 
   Geographical coordinates (ITRF) : 
          North Latitude   :  -43 deg 57' 22''
          East Longitude   : -176 deg 33' 59''
          Ellipsoid height :   60 m
   Approximate altitude    :   50 m


2. DORIS antenna and reference point information

2.1
   Four character ID        : CHAB
   Antenna model            : Starec 52291 type
   Antenna serial number    : 53
   IERS DOMES number        : 50207S001
   CNES/IGN number          : 502072
   CTDP number              : 86
   Date installed (dd/mm/yy): 28/02/1999
   Date removed (dd/mm/yy)  : 
   Antenna support type     : Guyed 2 metre tower
   Installed on             : Concrete pad
   Height above ground mark : 2.430
   Ground mark type         : Domed brass mark 12 mm diameter
   Ground mark DOMES number : 50207M002
   Notes                    : 


3. DORIS beacons information

3.1
   Beacon serial number        : 86 33 055
   Beacon model                : 1.0
   USO serial number           : 1.398
   4 Char. ID of the REF point : CHAB
   Date installed (dd/mm/yy)   : 27/02/1999
   Date removed (dd/mm/yy)     : 23/12/1999

3.2
   Beacon serial number        : 86 33 031
   Beacon model                : 1.0
   USO serial number           : 1.459
   4 Char. ID of the REF point : CHAB
   Date installed (dd/mm/yy)   : 23/12/1999
   Date removed (dd/mm/yy)     : 30/03/2000

3.3
   Beacon serial number        : 86 33 025
   Beacon model                : 1.0
   USO serial number           : 1.248
   4 Char. ID of the REF point : CHAB
   Date installed (dd/mm/yy)   : 31/03/2000
   Date removed (dd/mm/yy)     : 31/10/2000

3.4
   Beacon serial number        : 86 33 027
   Beacon model                : 1.0
   USO serial number           : 4.1671
   4 Char. ID of the REF point : CHAB
   Date installed (dd/mm/yy)   : 31/10/2000
   Date removed (dd/mm/yy)     : 


4. ITRF coordinates and velocities of the current DORIS ref. point (CHAB)

   Solution : ITRF 97 frame (connection with the IGS station CHAT)
              Velocities from the IGS station
   Epoch    : 1997.0

   X = -4590646.223 m     Y = -275436.678 m     Z = -4404628.866 m
   Sig X = 0.005 m         Sig Y = 0.005 m         Sig Z = 0.005 m

   VX = -0.0245 m/y        VY = 0.0381 m/y        VZ = 0.0214 m/y
   Sig VX = 0.0020 m/y     Sig VY = 0.0013 m/y     Sig VZ = 0.0019 m/y


5. IERS collocation information

5.1
   Instrument type       : GPS
   Status                : Permanent
   DOMES number of the
   instrument ref. point : 50207M001
   Notes                 : 


6. Tide Gauge collocation information

6.1
   Name         : Chatham Island
   Location     : Waitangi
   GLOSS number : 128
   Distance     : 1.2 km
   Notes        : Tie measured 03/1999


7. Local site ties

7.1
   Point description      : Mark under the DORIS antenna
   DOMES number           : 50207M002

   Differential components from the current DORIS ref. point (CHAB)
   to the above point (in the ITRS) :
                   dX (m) : 1.746
                   dY (m) : 0.105
                   dZ (m) : 1.687
   Accuracy (m)           : 0.001
   Date measured          : 
   Additional information : 

7.2
   Point description      : IGS monument CHAT
   DOMES number           : 50207M001

   Differential components from the current DORIS ref. point (CHAB)
   to the above point (in the ITRS) :
                   dX (m) : -24.691
                   dY (m) : -46.309
                   dZ (m) : 32.062
   Accuracy (m)           : 0.002
   Date measured          : 
   Additional information : 

7.3
   Point description      : Waitangi wharf : mark near the tide gauge
   DOMES number           : 

   Differential components from the current DORIS ref. point (CHAB)
   to the above point (in the ITRS) :
                   dX (m) : -726.123
                   dY (m) : -536.667
                   dZ (m) : 853.370
   Accuracy (m)           : 0.002
   Date measured          : 
   Additional information : 


8. Meteorological Instrumentation

8.1 Humidity sensor
   Model           : MUC13 + transmitter M-UTN3
   Manufacturer    : SPSI
   Accuracy        : 
   Notes           : 

8.2 Pressure sensor
   Model           : TP/FQ/02
   Manufacturer    : ORION
   Accuracy        : 
   Height          : -0.85 m above the current DORIS ref. point (CHAB)
   Notes           : 

8.3 Temperature sensor
   Model           : Constructed for DORIS beacons
   Manufacturer    : CEIS-TM
   Accuracy        : 
   Notes           : 


9. DORIS network contacts

   Primary contact:

   Name                : Herve FAGARD
   Agency              : Institut Geographique National
   Mailing address     : Service de Geodesie et de Nivellement
                       : 2 Avenue PASTEUR
                       : 94165 SAINT-MANDE CEDEX    FRANCE
   Telephone           : + 33 1 43 98 81 48
   Fax                 : + 33 1 43 98 84 50
   E-mail              : herve.fagard@ign.fr

   Secondary contact:

   Name                : Alain ORSONI
   Agency              : Institut Geographique National
   Mailing address     : CNES (ED/AL/MA)
                       : 18 Avenue Edouard BELIN
                       : 31401 TOULOUSE Cedex    FRANCE
   Telephone           : + 33 5 61 27 40 72
   Fax                 : + 33 5 61 28 25 95
   E-mail              : Alain.Orsoni@cnes.fr