SOCORRO DORIS site description form 0. Form Prepared by : SIMB (DORIS installation and maintenance department) Date prepared : 01/02/2012 Report type : UPDATE 1. Site location information Site name : SOCORRO Site DOMES number : 40503 Host agency : INEGI & Armada de Mexico City : Isla Socorro State or province : Colima Country : MEXICO Tectonic plate : PCFC Geological information : Geographical coordinates (ITRF) : North Latitude : 18 deg 43' 40'' East Longitude : -110 deg 57' 7'' Ellipsoid height : 16 m Approximate altitude : 51 m 2. DORIS antenna and reference point information 2.1 Four character ID : SODA Antenna model : Acatel Antenna serial number : 70 IERS DOMES number : 40503S003 CNES/IGN number : 405032 DORIS SSALTO number : 21 Date installed (dd/mm/yy): 08/02/1991 Date removed (dd/mm/yy) : 18/05/1998 Antenna support type : Guyed 2 metre tower Installed on : Terrace roof of a 1 storied building Height above ground mark : 3.199 m Ground mark type : Brass mark 12 mm diameter Ground mark DOMES number : 40503M002 Notes : From 09/06/89 to 15/10/90 ID=SOCA SSALTO n°=40 on Board n°=40, DOMES=40503S002, beacon=8633040 WARNING from 11/12/92 to 31/04/99 Arlit (ARMA) SSALTO n° & on board n°= 40. From 08/02/91 to 20/12/97 ID = SODA SSALTO n°= 21 on board n°= 44 2.2 Four character ID : SODB Antenna model : Starec 52290 type Antenna serial number : 43 IERS DOMES number : 40503S004 CNES/IGN number : 405033 DORIS SSALTO number : 79 Date installed (dd/mm/yy): 20/05/1998 Date removed (dd/mm/yy) : Antenna support type : Guyed 3 metre tower Installed on : Terrace roof of a 1 storied building Height above ground mark : 3.462 m Ground mark type : Brass mark 12 mm diameter Ground mark DOMES number : 40503M002 Notes : 3. DORIS beacons information 3.1 Beacon serial number : 8627021 Beacon model : 1.0 USO serial number : 1.357 4 Char. ID of the REF point : SODA Date installed (dd/mm/yy) : 18/02/1991 Date removed (dd/mm/yy) : 30/11/1991 3.2 Beacon serial number : 8633044 Beacon model : 1.0 USO serial number : 1.399 4 Char. ID of the REF point : SODA Date installed (dd/mm/yy) : 01/12/1991 Date removed (dd/mm/yy) : 01/07/1994 3.3 Beacon serial number : 8633034 Beacon model : 1.0 USO serial number : 1.369 4 Char. ID of the REF point : SODA Date installed (dd/mm/yy) : 25/07/1994 Date removed (dd/mm/yy) : 30/11/1997 3.4 Beacon serial number : 8633043 Beacon model : 1.0 USO serial number : 1.545 4 Char. ID of the REF point : SODB Date installed (dd/mm/yy) : 20/05/1998 Date removed (dd/mm/yy) : 12/10/2000 3.5 Beacon serial number : 8633044 Beacon model : 1.0 USO serial number : 4.86899 4 Char. ID of the REF point : SODB Date installed (dd/mm/yy) : 17/07/2001 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (SODB) Solution : DPOD2008 Epoch : 2005.0 X = -2160725.739 m Y = -5643017.341 m Z = 2034837.055 m Sig X = 0.001 m Sig Y = 0.001 m Sig Z = 0.001 m VX = -0.0495 m/y VY = 0.0267 m/y VZ = 0.0214 m/y Sig VX = m/y Sig VY = m/y Sig VZ = m/y 5. IERS colocation information 6. Tide Gauge colocation information 6.1 Name : Socorro Island Location : Socorro Island GLOSS number : 162 Distance : 370 m Notes : Tie measured 05/1998 7. Local site ties 7.1 Point description : DORIS Alcatel antenna reference point (SOCA) DOMES number : 40503S002 Differential components from the current DORIS ref. point (SODB) to the above point (in the ITRS) : dX (m) : -202.883 dY (m) : 30.46 dZ (m) : -148.559 Accuracy (m) : 0.03 Date measured : 01/02/1991 Additional information : Survey by IGN-F 7.2 Point description : Brass mark under the current DORIS antenna DOMES number : 40503M002 Differential components from the current DORIS ref. point (SODB) to the above point (in the ITRS) : dX (m) : 1.173 dY (m) : 3.062 dZ (m) : -1.111 Accuracy (m) : 0.001 Date measured : 01/05/1998 Additional information : Survey by IGN-F 7.3 Point description : DORIS Alcatel antenna reference point (SODA) DOMES number : 40503S003 Differential components from the current DORIS ref. point (SODB) to the above point (in the ITRS) : dX (m) : 0.089 dY (m) : 0.233 dZ (m) : -0.084 Accuracy (m) : 0.001 Date measured : 01/05/1998 Additional information : Survey by IGN-F 7.4 Point description : Mark NOAA/BM3 (near the tide gauge) DOMES number : Differential components from the current DORIS ref. point (SODB) to the above point (in the ITRS) : dX (m) : 185.685 dY (m) : -135.255 dZ (m) : -290.548 Accuracy (m) : 0.01 Date measured : 01/05/1998 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 hPa Height : 1.51 m below the current DORIS ref. point (SODB) 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