TRISTAN DA CUNHA DORIS site description form 0. Form Prepared by : SIMB (DORIS installation and maintenance department) Date prepared : 13/09/2013 Report type : UPDATE 1. Site location information Site name : TRISTAN DA CUNHA Site DOMES number : 30604 Host agency : Telecommunications Department City : Edinburgh State or province : Tristan da Cunha Island Country : UNITED KINGDOM (South Atlantic Ocean) Tectonic plate : AFRC Geological information : basatic lava flows Geographical coordinates (ITRF) : North Latitude : -37 deg 3' 54'' East Longitude : -12 deg 18' 45'' Ellipsoid height : 46 m Approximate altitude : 25 m 2. DORIS antenna and reference point information 2.1 Four character ID : TRIA Antenna model : Alcatel Antenna serial number : 16 IERS DOMES number : 30604S001 CNES/IGN number : 306041 DORIS SSALTO number : 58 Date installed (dd/mm/yy): 10/06/1986 Date removed (dd/mm/yy) : 23/05/2001 Antenna support type : 1 metre tower Installed on : Front wall interface fixed through the station wall. Height above ground mark : m Ground mark type : Ground mark DOMES number : Notes : 2.2 Four character ID : TRIB Antenna model : Starec 52291 type Antenna serial number : 94 IERS DOMES number : 30604S002 CNES/IGN number : 306042 DORIS SSALTO number : 223 Date installed (dd/mm/yy): 24/01/2002 Date removed (dd/mm/yy) : 10/06/2012 Antenna support type : 1.2 m high, 30 cm sided concrete pillar Installed on : One cubic meter concrete base Height above ground mark : 0.490 m Ground mark type : Domed brass mark 12 mm diameter Ground mark DOMES number : 30604M001 Notes : 2.3 Four character ID : TRJB Antenna model : Starec 52291 type Antenna serial number : 140 IERS DOMES number : 30604S003 CNES/IGN number : 306043 DORIS SSALTO number : 297 Date installed (dd/mm/yy): 10/06/2012 Date removed (dd/mm/yy) : Antenna support type : 30 cm sided very rigid metal tower, 3 m high Installed on : concrete block Height above ground mark : 3.408 m Ground mark type : Hexagonal domed brass Ground mark DOMES number : 30604M003 Notes : 3. DORIS beacons information 3.1 Beacon serial number : 8625004 Beacon model : 1.0 USO serial number : 1.261 4 Char. ID of the REF point : TRIA Date installed (dd/mm/yy) : 10/06/1986 Date removed (dd/mm/yy) : 23/02/1990 3.2 Beacon serial number : 8633031 Beacon model : 1.0 USO serial number : 1.569 4 Char. ID of the REF point : TRIA Date installed (dd/mm/yy) : 09/10/1990 Date removed (dd/mm/yy) : 15/07/1991 3.3 Beacon serial number : 8633058 Beacon model : 1.0 USO serial number : 1.663 4 Char. ID of the REF point : TRIA Date installed (dd/mm/yy) : 12/01/1992 Date removed (dd/mm/yy) : 22/01/2002 3.4 Beacon serial number : 2819006 Beacon model : 3.0 USO serial number : 3.214 4 Char. ID of the REF point : TRIB Date installed (dd/mm/yy) : 23/01/2002 Date removed (dd/mm/yy) : 02/07/2007 3.5 Beacon serial number : 2819016 Beacon model : 3.0 USO serial number : 3.271 4 Char. ID of the REF point : TRIB Date installed (dd/mm/yy) : 09/10/2007 Date removed (dd/mm/yy) : 15/03/2010 3.6 Beacon serial number : 2819024 Beacon model : 3.0 USO serial number : 3.300 4 Char. ID of the REF point : TRIB Date installed (dd/mm/yy) : 15/03/2010 Date removed (dd/mm/yy) : 10/06/2012 3.7 Beacon serial number : 2819036 Beacon model : 3.0 USO serial number : 3.298 4 Char. ID of the REF point : TRJB Date installed (dd/mm/yy) : 10/06/2012 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (TRJB) Solution : DPOD2008 (tie to TRIB) Epoch : 2005.0 X = 4978474.799 m Y = -1086612.063 m Z = -3823190.341 m Sig X = 0.001 m Sig Y = 0.001 m Sig Z = 0.001 m VX = 0.0185 m/y VY = 0.0204 m/y VZ = 0.0154 m/y Sig VX = m/y Sig VY = m/y Sig VZ = m/y 5. IERS colocation information 5.1 Instrument type : GNSS Status : Permanent DOMES number of the instrument ref. point : 30604M000 Notes : Permanent GNSS station (managed by NOC) 6. Tide Gauge colocation information 6.1 Name : Edinburgh Location : Tristan da Cunha GLOSS number : 266 Distance : 108 m Notes : Tie measured 06/2012 7. Local site ties 7.1 Point description : DORIS Alcatel antenna reference point (TRIA) DOMES number : 30604S001 Differential components from the current DORIS ref. point (TRJB) to the above point (in the ITRS) : dX (m) : -11.565 dY (m) : -8.446 dZ (m) : -15.156 Accuracy (m) : 0.005 Date measured : 23/01/2002 Additional information : Survey by IGN-F 2002 7.2 Point description : Mark under the DORIS antenna DOMES number : 30604M003 Differential components from the current DORIS ref. point (TRJB) to the above point (in the ITRS) : dX (m) : -2.657 dY (m) : 0.577 dZ (m) : 2.054 Accuracy (m) : 0.001 Date measured : 12/06/2012 Additional information : Survey by IGN-F 2012 7.3 Point description : DORIS Starec antenna reference point (TRIB) DOMES number : 30604S002 Differential components from the current DORIS ref. point (TRJB) to the above point (in the ITRS) : dX (m) : -12.665 dY (m) : -4.902 dZ (m) : -14.149 Accuracy (m) : 0.001 Date measured : 12/06/2012 Additional information : Survey by IGN-F 2012 7.4 Point description : Mark on top of a concrete pillar DOMES number : 30604M001 Differential components from the current DORIS ref. point (TRJB) to the above point (in the ITRS) : dX (m) : -13.048 dY (m) : -4.818 dZ (m) : -13.853 Accuracy (m) : 0.001 Date measured : 12/06/2012 Additional information : Survey by IGN-F 2012 7.5 Point description : Permanent GNSS station (managed by NOC) DOMES number : 30604M Differential components from the current DORIS ref. point (TRJB) to the above point (in the ITRS) : dX (m) : -11.042 dY (m) : -8.527 dZ (m) : -14.695 Accuracy (m) : 0.001 Date measured : 12/06/2012 Additional information : Survey by IGN-F 2012 7.6 Point description : Tide gauge reference point (GLOSS 266 POL BM2) DOMES number : 30604M002 Differential components from the current DORIS ref. point (TRJB) to the above point (in the ITRS) : dX (m) : 32.456 dY (m) : -46.402 dZ (m) : 92.311 Accuracy (m) : 0.001 Date measured : 12/06/2012 Additional information : Survey by IGN-F 2012 8. Meteorological Instrumentation 8.1 Humidity sensor Model : Manufacturer : Accuracy : Notes : No humidity sensor 8.2 Pressure sensor Model : Manufacturer : Accuracy : Height : m below the current DORIS ref. point (TRJB) Notes : No pressure sensor 8.3 Temperature sensor Model : Manufacturer : Accuracy : Notes : No temperature sensor 9. DORIS network contacts Primary contact: Name : Jerome SAUNIER Agency : Institut Geographique National Mailing address : Service de Geodesie et Nivellement : 73 avenue de Paris : 94165 SAINT-MANDE Cedex FRANCE Telephone : + 33 1 43 98 83 63 Fax : + 33 1 43 98 84 50 E-mail : jerome (.) saunier (@) ign.fr Secondary contact: Name : Francois BOLDO Agency : Institut Geographique National Mailing address : CNES (DCT/ME/OC) : 18 Avenue Edouard Belin : 31401 TOULOUSE Cedex FRANCE Telephone : + 33 5 61 27 40 72 Fax : + 33 5 61 28 25 95 E-mail : simb (.) doris (@) cnes.fr