LA REUNION 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 : LA REUNION Site DOMES number : 97401 Host agency : Observatoire volcanologique du Piton de la Fournaise City : La Plaine des Cafres State or province : La Reunion Country : FRANCE (Mascarene Islands) Tectonic plate : Somalia Geological information : Geographical coordinates (ITRF) : North Latitude : -21 deg 12' 30'' East Longitude : 55 deg 34' 18'' Ellipsoid height : 1561 m Approximate altitude : 1554 m 2. DORIS antenna and reference point information 2.1 Four character ID : REUA Antenna model : Alcatel Antenna serial number : 12 IERS DOMES number : 97401S001 CNES/IGN number : 974011 CTDP number : 12 Date installed (dd/mm/yy): 01/01/1987 Date removed (dd/mm/yy) : 10/12/1998 Antenna support type : Guyed 4 metre tower Installed on : Concrete pad Height above ground mark : 4.275 m Ground mark type : Glued target Ground mark DOMES number : 97401M002 Notes : 2.2 Four character ID : REUB Antenna model : Starec 52291 type Antenna serial number : 106 IERS DOMES number : 97401S002 CNES/IGN number : 974012 CTDP number : 83 Date installed (dd/mm/yy): 16/12/1998 Date removed (dd/mm/yy) : Antenna support type : Guyed 3 metre tower Installed on : Concrete pad Height above ground mark : 3.364 m Ground mark type : Brass mark embeded in the base plate of antenna Ground mark DOMES number : 97401M004 Notes : Starec 52290 type antenna number 46 removed on : 01/12/2003 3. DORIS beacons information 3.1 Beacon serial number : 86 27 012 Beacon model : 1.0 USO serial number : 1.480 4 Char. ID of the REF point : REUA Date installed (dd/mm/yy) : 01/01/1987 Date removed (dd/mm/yy) : 05/04/1997 3.2 Beacon serial number : 86 33 038 Beacon model : 1.0 USO serial number : 2.1048 4 Char. ID of the REF point : REUA Date installed (dd/mm/yy) : 07/05/1997 Date removed (dd/mm/yy) : 20/05/1997 3.3 Beacon serial number : 86 27 022 Beacon model : 1.0 USO serial number : 1.353 4 Char. ID of the REF point : REUA Date installed (dd/mm/yy) : 23/06/1997 Date removed (dd/mm/yy) : 10/12/1998 3.4 Beacon serial number : 86 27 022 Beacon model : 1.0 USO serial number : 1.353 4 Char. ID of the REF point : REUB Date installed (dd/mm/yy) : 16/12/1998 Date removed (dd/mm/yy) : 30/11/2003 3.5 Beacon serial number : 28 19 039 Beacon model : 3.0 USO serial number : 3.337 4 Char. ID of the REF point : REUB Date installed (dd/mm/yy) : 01/12/2003 Date removed (dd/mm/yy) : 09/07/2004 3.6 Beacon serial number : 28 19 024 Beacon model : 3.0 USO serial number : 3.300 4 Char. ID of the REF point : REUB Date installed (dd/mm/yy) : 13/08/2004 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (REUB) Solution : ITRF2000 Epoch : 1997.0 X = 3364093.397 m Y = 4907944.812 m Z = -2293482.052 m Sig X = 0.007 m Sig Y = 0.007 m Sig Z = 0.004 m VX = -0.0066 m/y VY = 0.0107 m/y VZ = 0.0120 m/y Sig VX = 0.0034 m/y Sig VY = 0.0030 m/y Sig VZ = 0.0019 m/y 5. IERS co-location information 5.1 Instrument type : GPS Status : Permanent DOMES number of the instrument ref. point : 97401M003 Notes : 6. Tide gauge co-location information 6.1 Name : Pte des Galets Location : Reunion Is. GLOSS number : 17 Distance : 43 km Notes : 7. Local site ties 7.1 Point description : Domed mark in metal tube under the DORIS antenna DOMES number : 97401M004 Differential components from the current DORIS ref. point (REUB) to the above point (in the ITRS) : dX (m) : -1.773 dY (m) : -2.587 dZ (m) : 1.217 Accuracy (m) : 0.001 Date measured : 12/1998 Additional information : Survey by IGN-F 7.2 Point description : DORIS Alcatel antenna reference point (REUA) DOMES number : 97401S001 Differential components from the current DORIS ref. point (REUB) to the above point (in the ITRS) : dX (m) : 0.447 dY (m) : 0.645 dZ (m) : -0.273 Accuracy (m) : 0.001 Date measured : 12/1998 Additional information : Survey by IGN-F 7.3 Point description : Mark on pillar (GPS/GLONASS station REUN) DOMES number : 97401M003 Differential components from the current DORIS ref. point (REUB) to the above point (in the ITRS) : dX (m) : 5.813 dY (m) : -0.405 dZ (m) : 15.094 Accuracy (m) : 0.003 Date measured : 12/1998 Additional information : Survey by IGN-F 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 : 2.2 m below the current DORIS ref. point (REUB) 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