MARION ISLAND 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 : MARION ISLAND Site DOMES number : 30313 Host agency : Department of environmental affairs City : Marion Island State or province : Southern Indian Ocean Country : SOUTH AFRICA Tectonic plate : ANTA Geological information : Geographical coordinates (ITRF) : North Latitude : -46 deg 52' 44'' East Longitude : 37 deg 51' 25'' Ellipsoid height : 92 m Approximate altitude : 45 m 2. DORIS antenna and reference point information 2.1 Four character ID : MARA Antenna model : Alcatel Antenna serial number : 52 IERS DOMES number : 30313S001 CNES/IGN number : 303131 DORIS SSALTO number : 22 Date installed (dd/mm/yy): 15/05/1987 Date removed (dd/mm/yy) : 07/07/1998 Antenna support type : Guyed 2 metre tower Installed on : Concrete pad Height above ground mark : 2.190 m Ground mark type : Glued target Ground mark DOMES number : 30313M001 Notes : 2.2 Four character ID : MARB Antenna model : Starec 52291 type Antenna serial number : 51 IERS DOMES number : 30313S002 CNES/IGN number : 303132 DORIS SSALTO number : 87 Date installed (dd/mm/yy): 31/05/1999 Date removed (dd/mm/yy) : 15/08/2004 Antenna support type : Guyed 2 metre tower Installed on : Concrete pad Height above ground mark : 2.427 m Ground mark type : Glued target Ground mark DOMES number : 30313M001 Notes : Antenna tilted due to corrosion of the base plate 2 GHz phase centre drift = 67 mm towards North 2.3 Four character ID : MATB Antenna model : Starec 52291 type Antenna serial number : 81 IERS DOMES number : 30313S003 CNES/IGN number : 303133 DORIS SSALTO number : 245 Date installed (dd/mm/yy): 21/08/2004 Date removed (dd/mm/yy) : 09/11/2006 Antenna support type : 30 cm sided very rigid metal tower, 2 m high Installed on : Concrete pad Height above ground mark : 2.431 m Ground mark type : Glued target Ground mark DOMES number : 30313M001 Notes : Antenna broken early 2006, see DORISmail No 0453 2.4 Four character ID : MATB Antenna model : Starec 52291 type Antenna serial number : 87 IERS DOMES number : 30313S003 CNES/IGN number : 303133 DORIS SSALTO number : 245 Date installed (dd/mm/yy): 09/11/2006 Date removed (dd/mm/yy) : Antenna support type : 30 cm sided very rigid metal tower, 2 m high Installed on : Concrete pad Height above ground mark : 2.431 m Ground mark type : Glued target Ground mark DOMES number : 30313M001 Notes : New antenna, same position as before the early 2006 break, see DORISmail No 0479 3. DORIS beacons information 3.1 Beacon serial number : 8627022 Beacon model : 1.0 USO serial number : 1.353 4 Char. ID of the REF point : MARA Date installed (dd/mm/yy) : 15/05/1987 Date removed (dd/mm/yy) : 25/07/1994 3.2 Beacon serial number : 8627010 Beacon model : 1.0 USO serial number : 1.472 4 Char. ID of the REF point : MARA Date installed (dd/mm/yy) : 16/05/1994 Date removed (dd/mm/yy) : 31/05/1995 3.3 Beacon serial number : 8633045 Beacon model : 1.0 USO serial number : 1.643 4 Char. ID of the REF point : MARA Date installed (dd/mm/yy) : 27/03/1995 Date removed (dd/mm/yy) : 07/07/1998 3.4 Beacon serial number : 8633052 Beacon model : 1.0 USO serial number : 1.685 4 Char. ID of the REF point : MARB Date installed (dd/mm/yy) : 28/05/1999 Date removed (dd/mm/yy) : 15/09/1999 3.5 Beacon serial number : 8633042 Beacon model : 1.0 USO serial number : 2.1144 4 Char. ID of the REF point : MARB Date installed (dd/mm/yy) : 14/01/2000 Date removed (dd/mm/yy) : 18/04/2003 3.6 Beacon serial number : 2819018 Beacon model : 3.0 USO serial number : 3.282 4 Char. ID of the REF point : MARB Date installed (dd/mm/yy) : 19/04/2003 Date removed (dd/mm/yy) : 20/08/2004 3.7 Beacon serial number : 2819018 Beacon model : 3.0 USO serial number : 3.282 4 Char. ID of the REF point : MATB Date installed (dd/mm/yy) : 21/08/2004 Date removed (dd/mm/yy) : 29/04/2010 3.8 Beacon serial number : 3690069 Beacon model : 3.0 USO serial number : 3.508 4 Char. ID of the REF point : MATB Date installed (dd/mm/yy) : 29/04/2010 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (MATB) Solution : ITRF2008 Epoch : 2005.0 X = 3448405.717 m Y = 2680356.418 m Z = -4632640.566 m Sig X = 0.003 m Sig Y = 0.003 m Sig Z = 0.002 m VX = -0.0040 m/y VY = 0.0057 m/y VZ = 0.0019 m/y Sig VX = 0.0005 m/y Sig VY = 0.0006 m/y Sig VZ = 0.0005 m/y 5. IERS colocation information 5.1 Instrument type : GNSS Status : Permanent DOMES number of the instrument ref. point : 30313S004 Notes : Proposed IGS station "MARN" 6. Tide Gauge colocation information 7. Local site ties 7.1 Point description : DORIS Alcatel antenna reference point (MARA) DOMES number : 30313S001 Differential components from the current DORIS ref. point (MATB) to the above point (in the ITRS) : dX (m) : -0.135 dY (m) : -0.101 dZ (m) : 0.186 Accuracy (m) : 0.005 Date measured : 01/08/2004 Additional information : Survey by HARTRAO 2004 7.2 Point description : DORIS Starec antenna reference point (MARB) DOMES number : 30313S002 Differential components from the current DORIS ref. point (MATB) to the above point (in the ITRS) : dX (m) : -0.008 dY (m) : -0.006 dZ (m) : 0.010 Accuracy (m) : 0.002 Date measured : 01/08/2004 Additional information : Survey by HARTRAO 2004 7.3 Point description : GPS Antenna Reference Point (MARN) DOMES number : 30313S004 Differential components from the current DORIS ref. point (MATB) to the above point (in the ITRS) : dX (m) : -46.338 dY (m) : 349.779 dZ (m) : 208.241 Accuracy (m) : 0.005 Date measured : 09/11/2006 Additional information : GPS Survey by IGN-F 2006 7.4 Point description : Mark (glued target) under the DORIS antenna DOMES number : 30313M001 Differential components from the current DORIS ref. point (MATB) to the above point (in the ITRS) : dX (m) : -1.303 dY (m) : -1.025 dZ (m) : 1.778 Accuracy (m) : 0.001 Date measured : 09/11/2006 Additional information : GPS Survey by IGN-F 2006 8. Meteorological Instrumentation 8.1 Humidity sensor Model : HMP45D Manufacturer : VAISALA Accuracy : +/- 3 percents Notes : 8.2 Pressure sensor Model : PTU200 class B Manufacturer : VAISALA Accuracy : +/- 0.25 hPa Height : 0.9 m below the current DORIS ref. point (MATB) Notes : long term stability = +/- 0.1 hPa/year 8.3 Temperature sensor Model : HMP45D Manufacturer : VAISALA Accuracy : +/- 0.5 deg C Notes : 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