CROZET DORIS site description form 0. Form Prepared by : SIMB (DORIS installation and maintenance department) Date prepared : 08/02/2024 Report type : UPDATE 1. Site location information Site name : CROZET Site DOMES number : 91301 Host agency : Institut Polaire Paul-Emile Victor (IPEV) City : Crozet Island State or province : T.A.A.F. Country : FRANCE (French Southern and Antarctic Lands) 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 : 152 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 : Triangular plate Installed on : 2 meter high , 40 cm diameter concrete pillar (1.4 m deep foundations) 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 : 6 rods (15 cm high) fixed on triangular plate Installed on : 2 meter high , 40 cm diameter concrete pillar (1.4 m deep foundations) 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) : 13/05/2020 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 : 2.4 Four character ID : CRQC Antenna model : Starec C type Antenna serial number : 192 IERS DOMES number : 91301S004 CNES/IGN number : 913013 DORIS SSALTO number : 1289 Date installed (dd/mm/yy): 14/05/2020 Date removed (dd/mm/yy) : 02/02/2024 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 : 2.5 Four character ID : CRRC Antenna model : Starec C type Antenna serial number : 216 IERS DOMES number : 91301S005 CNES/IGN number : 913013 DORIS SSALTO number : 2289 Date installed (dd/mm/yy): 03/02/2024 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) : 12/05/2020 3.4 Beacon serial number : 19054006I Beacon model : 4.0 USO serial number : 4.0006 4 Char. ID of the REF point : CRQC Date installed (dd/mm/yy) : 14/05/2020 Date removed (dd/mm/yy) : 02/02/2024 3.5 Beacon serial number : 19054006I Beacon model : 4.0 USO serial number : 4.P0006 4 Char. ID of the REF point : CRRC Date installed (dd/mm/yy) : 03/02/2024 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (CRRC) Solution : dpod2020_015 Epoch : 2000.0 X = 2719992.250 m Y = 3463402.135 m Z = -4598608.423 m Sig X = 0.001 m Sig Y = 0.002 m Sig Z = 0.001 m VX = -0.00499 m/y VY = 0.00171 m/y VZ = 0.00142 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 : 91301M002 Notes : IGS station (CZTG) 6. Tide Gauge colocation information 7. Local site ties 7.1 Point description : DORIS Starec antenna reference point (CRQC) DOMES number : 91301S004 Differential components from the DORIS ref. point (CRRC) to the above point (in the ITRS) : dX (m) : 0.000 dY (m) : 0.000 dZ (m) : 0.000 Accuracy (m) : 0.002 Date measured : 03/02/2024 Additional information : Survey by IPEV 7.2 Point description : DORIS Starec antenna reference point (CRQB) DOMES number : 91301S003 Differential components from the DORIS ref. point (CRQC) to the above point (in the ITRS) : dX (m) : 0.000 dY (m) : 0.000 dZ (m) : 0.000 Accuracy (m) : 0.001 Date measured : 14/09/2020 Additional information : Survey by IPEV 7.3 Point description : Domed mark on top of DORIS concrete pillar DOMES number : 91301M001 Differential components from the DORIS ref. point (CRQC) 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 : 14/09/2020 Additional information : Survey by IPEV 8. Meteorological Instrumentation 8.1 Humidity sensor Model : Manufacturer : Accuracy : Notes : No humidity sensor (3.1 configuration) 8.2 Pressure sensor Model : PTB210B Manufacturer : VAISALA Accuracy : +/- 0.20 mb Height : m below the current DORIS ref. point (CRRC) Notes : long term stability = +/- 0.1 mb/year 8.3 Temperature sensor Model : Manufacturer : Accuracy : Notes : No temperature sensor (3.1 configuration) 9. DORIS network contacts Primary contact: Name : Jerome SAUNIER Agency : IGN Institut Geographique National Mailing address : Service de Geodesie et de Metrologie : 73 avenue de Paris : 94165 SAINT-MANDE Cedex FRANCE Telephone : + 33 1 43 98 83 63 Fax : E-mail : jerome (.) saunier (@) ign.fr Secondary contact: Name : Vincent GARCIA Agency : CNES Centre National d'Etudes Spatiales Mailing address : CNES (DNO/TSA/IS) : 18 Avenue Edouard Belin : 31401 TOULOUSE Cedex FRANCE Telephone : + 33 5 61 27 37 75 Fax : E-mail : vincent (.) garcia (@) cnes.fr