CROZET DORIS site description form 0. Form Prepared by : SIMB (DORIS installation and maintenance department) Date prepared : 04/02/2011 Report type : UPDATE 1. Site location information Site name : CROZET Site DOMES number : 91301 Host agency : IPEV City : Crozet Island State or province : T.A.A.F. Country : FRANCE (Crozet Island) Tectonic plate : ANTA Geological information : Geographical coordinates (ITRF) : North Latitude : -46 deg 25' 55'' East Longitude : 51 deg 51' 20'' Ellipsoid height : 203 m Approximate altitude : 153 m 2. DORIS antenna and reference point information 2.1 Four character ID : CROB Antenna model : Starec 52291 type Antenna serial number : 90 IERS DOMES number : 91301S001 CNES/IGN number : 913011 DORIS SSALTO number : 238 Date installed (dd/mm/yy): 21/12/2003 Date removed (dd/mm/yy) : 05/04/2007 Antenna support type : 2 meter high, 40 cm diameter concrete pillar Installed on : ground (the pillar foundations are 1.4 m deep) Height above ground mark : 0.490 m Ground mark type : Domed brass screw at the top of the pillar Ground mark DOMES number : 91301M001 Notes : 2.2 Four character ID : CRPB Antenna model : Starec 52291 type Antenna serial number : 90 IERS DOMES number : 91301S002 CNES/IGN number : 913012 DORIS SSALTO number : 276 Date installed (dd/mm/yy): 05/04/2007 Date removed (dd/mm/yy) : 25/03/2009 Antenna support type : 2 meter high, 40 cm diameter concrete pillar Installed on : ground (the pillar foundations are 1.4 m deep) Height above ground mark : 0.640 m Ground mark type : Domed brass screw at the top of the pillar Ground mark DOMES number : 91301M001 Notes : Antenna raised by 15 cm in order to remove the N-type bent cable connectors 2.3 Four character ID : CRQB Antenna model : Starec 52291 type Antenna serial number : 147 IERS DOMES number : 91301S003 CNES/IGN number : 913013 DORIS SSALTO number : 289 Date installed (dd/mm/yy): 27/03/2009 Date removed (dd/mm/yy) : Antenna support type : 40 cm high stainless steel tripod Installed on : 2 meter high , 40 cm diameter concrete pillar (1.4 m deep foundations) Height above ground mark : 0.842 m Ground mark type : Domed brass screw at the top of the pillar Ground mark DOMES number : 91301M001 Notes : 3. DORIS beacons information 3.1 Beacon serial number : 2819014 Beacon model : 3.0 USO serial number : 3.241 4 Char. ID of the REF point : CROB Date installed (dd/mm/yy) : 01/12/2003 Date removed (dd/mm/yy) : 04/04/2007 3.2 Beacon serial number : 2819014 Beacon model : 3.0 USO serial number : 3.241 4 Char. ID of the REF point : CRPB Date installed (dd/mm/yy) : 05/04/2007 Date removed (dd/mm/yy) : 25/03/2009 3.3 Beacon serial number : 2819014 Beacon model : 3.0 USO serial number : 3.241 4 Char. ID of the REF point : CRQB Date installed (dd/mm/yy) : 27/03/2009 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (CRQB) Solution : ITRF2005 Epoch : 2000.0 X = 2719992.247 m Y = 3463402.117 m Z = -4598608.399 m Sig X = 0.030 m Sig Y = 0.030 m Sig Z = 0.030 m VX = -0.00589 m/y VY = 0.00287 m/y VZ = -0.00267 m/y Sig VX = 0.0055 m/y Sig VY = 0.0049 m/y Sig VZ = 0.0041 m/y 5. IERS colocation information 6. Tide Gauge colocation information 6.1 Name : Crozet Location : Crozet GLOSS number : 21 Distance : Notes : 7. Local site ties 7.1 Point description : Geodetic pillar "Nivmer" DOMES number : 91301M000 Differential components from the current DORIS ref. point (CRQB) to the above point (in the ITRS) : dX (m) : 310.435 dY (m) : 248.079 dZ (m) : 504.301 Accuracy (m) : 0.006 Date measured : 06/04/2007 Additional information : GPS Survey by IGN-F 2007 7.2 Point description : DORIS Starec antenna reference point (CROB) DOMES number : 91301S001 Differential components from the current DORIS ref. point (CRQB) to the above point (in the ITRS) : dX (m) : -0.149 dY (m) : -0.193 dZ (m) : 0.255 Accuracy (m) : 0.001 Date measured : 23/03/2009 Additional information : Survey by IGN-F 2009 7.3 Point description : Domed mark on top of DORIS concrete pillar DOMES number : 91301M001 Differential components from the current DORIS ref. point (CRQB) to the above point (in the ITRS) : dX (m) : -0.357 dY (m) : -0.458 dZ (m) : 0.610 Accuracy (m) : 0.001 Date measured : 26/03/2009 Additional information : Survey by IGN-F 2009 7.4 Point description : DORIS Starec antenna reference point (CRPB) DOMES number : 91301S002 Differential components from the current DORIS ref. point (CRQB) to the above point (in the ITRS) : dX (m) : -0.085 dY (m) : -0.112 dZ (m) : 0.146 Accuracy (m) : 0.001 Date measured : 26/03/2009 Additional information : Survey by IGN-F 2009 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 : 1.0 m below the current DORIS ref. point (CRQB) 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 de 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/OT) : 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