EASTER ISLAND DORIS site description form 0. Form Prepared by : SIMB (DORIS installation and maintenance department) Date prepared : 9/12/2008 Report type : UPDATE 1. Site location information Site name : EASTER ISLAND Site DOMES number : 41703 Host agency : CENTRO DE ESTUDIOS ESPACIALES City : Isla de Pascua State or province : Country : CHILE Tectonic plate (PB2002) : Nazca Geological information : Geographical coordinates (ITRF) : North Latitude : -27 deg 8' 53'' East Longitude : -109 deg 23' 1'' Ellipsoid height : 118 m Approximate altitude : 130 m 2. DORIS antenna and reference point information 2.1 Four character ID : EASA Antenna model : Alcatel Antenna serial number : IERS DOMES number : 41703S008 CNES/IGN number : 417031 CTDP number : 41 Date installed (dd/mm/yy): 17/11/1988 Date removed (dd/mm/yy) : 23/02/2001 Antenna support type : Guyed 4 metre tower Installed on : Concrete pad Height above ground mark : 4.215 m Ground mark type : Target Ground mark DOMES number : 41703M004 Notes : 2.2 Four character ID : EASB Antenna model : Starec 52291 type Antenna serial number : 72 IERS DOMES number : 41703S009 CNES/IGN number : 417032 CTDP number : 214 Date installed (dd/mm/yy): 26/02/2001 Date removed (dd/mm/yy) : Antenna support type : 2 metre triangular steel tower (45 cm sided) Installed on : 0.7 m sided, 0.5 m high and 2 m deep concrete : pillar Height above ground mark : 2.457 m Ground mark type : Domed brass mark 12 mm diam. Ground mark DOMES number : 41703 Notes : 3. DORIS beacons information 3.1 Beacon serial number : 86 33 041 Beacon model : 1.0 USO serial number : 1.536 4 Char. ID of the REF point : EASA Date installed (dd/mm/yy) : 01/11/1988 Date removed (dd/mm/yy) : 02/11/1992 3.2 Beacon serial number : 86 33 053 Beacon model : 1.0 USO serial number : 1.662 4 Char. ID of the REF point : EASA Date installed (dd/mm/yy) : 02/11/1992 Date removed (dd/mm/yy) : 11/11/1995 3.3 Beacon serial number : 86 33 059 Beacon model : 1.0 USO serial number : 1.399 4 Char. ID of the REF point : EASA Date installed (dd/mm/yy) : 11/11/1995 Date removed (dd/mm/yy) : 27/03/1997 3.4 Beacon serial number : 86 27 006 Beacon model : 1.0 USO serial number : 2.1043 4 Char. ID of the REF point : EASA Date installed (dd/mm/yy) : 09/05/1997 Date removed (dd/mm/yy) : 23/02/2001 3.5 Beacon serial number : 86 27 006 Beacon model : 1.0 USO serial number : 2.1043 4 Char. ID of the REF point : EASB Date installed (dd/mm/yy) : 26/02/2001 Date removed (dd/mm/yy) : 01/03/2001 3.6 Beacon serial number : 86 33 045 Beacon model : 1.0 USO serial number : 1.643 4 Char. ID of the REF point : EASB Date installed (dd/mm/yy) : 25/07/2001 Date removed (dd/mm/yy) : 30/11/2002 3.7 Beacon serial number : 28 19 015 Beacon model : 3.0 USO serial number : 3.246 4 Char. ID of the REF point : EASB Date installed (dd/mm/yy) : 01/12/2002 Date removed (dd/mm/yy) : 01/03/2007 3.8 Beacon serial number : 28 19 033 Beacon model : 3.0 USO serial number : 3.265 4 Char. ID of the REF point : EASB Date installed (dd/mm/yy) : 01/03/2007 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (EASB) Solution : ITRF2005 Epoch : 2000.0 X = -1884980.836 m Y = -5357604.701 m Z = -2892863.689 m Sig X = 0.003 m Sig Y = 0.003 m Sig Z = 0.002 m VX = 0.0670 m/y VY = -0.0225 m/y VZ = -0.0062 m/y Sig VX = .0007 m/y Sig VY = .0005 m/y Sig VZ = .0004 m/y 5. IERS co-location information 5.1 Instrument type : GPS Status : Permanent DOMES number of the instrument ref. point : 41703M003 Notes : 5.2 Instrument type : SLR Status : Mobile DOMES number of the instrument ref. point : 41703M002 Notes : 5.3 Instrument type : SLR Status : Mobile DOMES number of the instrument ref. point : 41703M001 Notes : 6. Tide gauge co-location information 6.1 Name : Pascua Is. Location : Easter Island GLOSS number : 137 Distance : 5,6 km Notes : Tie measured 02/2001 7. Local site ties 7.1 Point description : Concrete footing / mark under the DORIS antenna DOMES number : 41703M005 Differential components from the current DORIS ref. point (EASB) to the above point (in the ITRS) : dX (m) : 0.726 dY (m) : 2.062 dZ (m) : 1.121 Accuracy (m) : 0.001 Date measured : February 2001 Additional information : Survey by IGN-F 7.2 Point description : DORIS Alcatel antenna reference point (EASA) DOMES number : 41703S008 Differential components from the current DORIS ref. point (EASB) to the above point (in the ITRS) : dX (m) : -12.687 dY (m) : -0.387 dZ (m) : 5.008 Accuracy (m) : 0.002 Date measured : February 2001 Additional information : Survey by IGN-F 7.3 Point description : SLR mark (CDP 7097) DOMES number : 41703M002 Differential components from the current DORIS ref. point (EASB) to the above point (in the ITRS) : dX (m) : -2.734 dY (m) : -3.720 dZ (m) : 10.273 Accuracy (m) : 0.002 Date measured : July 1993 Additional information : Survey by ATSC 7.4 Point description : GPS monument JPL 4008-S (IGS station EISL) DOMES number : 41703M003 Differential components from the current DORIS ref. point (EASB) to the above point (in the ITRS) : dX (m) : 29.282 dY (m) : 8.765 dZ (m) : -26.815 Accuracy (m) : 0.002 Date measured : February 2001 Additional information : Survey by IGN-F 7.5 Point description : Tide gauge / mark Instituto Oceanografico CF-18a DOMES number : 41703M006 Differential components from the current DORIS ref. point (EASB) to the above point (in the ITRS) : dX (m) : -5053.380 dY (m) : 2245.667 dZ (m) : -593.933 Accuracy (m) : 0.003 Date measured : February 2001 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 : 2.8 m below the current DORIS ref. point (EASB) 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/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