CROZET DORIS site description form 0. Form Prepared by : SIMB (DORIS installation and maintenance department) Date prepared : 26/07/2007 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 : Antarctica 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 CTDP 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 pilar Installed on : ground (the pilar 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 : 91301 Notes : 2.2 Four character ID : CRPB Antenna model : Starec 52291 type Antenna serial number : 90 IERS DOMES number : 91301S00 CNES/IGN number : 913012 CTDP number : 276 Date installed (dd/mm/yy): 05/04/2007 Date removed (dd/mm/yy) : Antenna support type : 2 meter high, 40 cm diameter concrete pilar Installed on : ground (the pilar 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 : 91301 Notes : Antenna raised by 15 cm in order to remove the : N-type bent cable connectors 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) : 4. ITRF coordinates and velocities of the current DORIS ref. point (CRPB) Solution : ITRF2000 frame (connection to remote IGS stations) Epoch : 1997.0 X = 2719992.15 m Y = 3463401.95 m Z = -4598608.30 m Sig X = 0.03 m Sig Y = 0.03 m Sig Z = 0.03 m VX = m/y VY = m/y VZ = m/y Sig VX = m/y Sig VY = m/y Sig VZ = m/y 5. IERS co-location information 6. Tide gauge co-location information 6.1 Name : Crozet Location : GLOSS number : 21 Distance : 896 m Notes : 7. Local site ties 7.1 Point description : DORIS Starec antenna reference point (CROB) DOMES number : 91301S001 Differential components from the current DORIS ref. point (CRPB) to the above point (in the ITRS) : dX (m) : -0.064 dY (m) : -0.081 dZ (m) : 0.109 Accuracy (m) : 0.001 Date measured : April 2007 Additional information : Survey by IGN-F 7.2 Point description : Domed brass mark on the DORIS pillar DOMES number : 91301M001 Differential components from the current DORIS ref. point (CRPB) to the above point (in the ITRS) : dX (m) : -0.272 dY (m) : -0.347 dZ (m) : 0.464 Accuracy (m) : 0.001 Date measured : Additional information : 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 mb Height : 0.83 m below the current DORIS ref. point (CRPB) Notes : long term stability = +/- 0.1 mb/year 8.3 Temperature sensor Model : HMP45D Manufacturer : VAISALA Accuracy : +/- 0.5 deg C 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 : Francois BOLDO Agency : Institut Geographique National Mailing address : CNES (DCT/PO/AL) : 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