SOCORRO 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 : SOCORRO Site DOMES number : 40503 Host agency : INEGI & Armada de Mexico City : Isla Socorro State or province : Country : MEXICO Tectonic plate (PB2002) : Pacific Geological information : Geographical coordinates (ITRF) : North Latitude : 18 deg 43' 40'' East Longitude : -110 deg 57' 7'' Ellipsoid height : 17 m Approximate altitude : 40 m 2. DORIS antenna and reference point information 2.1 Four character ID : SOCA Antenna model : Alcatel Antenna serial number : 70 IERS DOMES number : 40503S002 CNES/IGN number : 405031 CTDP number : 40 Date installed (dd/mm/yy): 09/06/1989 Date removed (dd/mm/yy) : 15/09/1990 Antenna support type : Guyed 2 metre tower Installed on : Terrace roof of a 1 storied building Height above ground mark : 3.21 m Ground mark type : Brass mark 12 mm diameter Ground mark DOMES number : 40503 Notes : 2.2 Four character ID : SODA Antenna model : Alcatel Antenna serial number : 70 IERS DOMES number : 40503S003 CNES/IGN number : 405032 CTDP number : 21 Date installed (dd/mm/yy): 08/02/1991 Date removed (dd/mm/yy) : 20/12/1997 Antenna support type : Guyed 3 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 : 2.3 Four character ID : SODB Antenna model : Starec 52290 type Antenna serial number : 43 IERS DOMES number : 40503S004 CNES/IGN number : 405033 CTDP 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 : 86 33 040 Beacon model : 1.0 USO serial number : ? 4 Char. ID of the REF point : SODA Date installed (dd/mm/yy) : 01/06/1989 Date removed (dd/mm/yy) : 01/10/1990 3.2 Beacon serial number : 86 27 021 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 3.3 Beacon serial number : 86 33 044 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 3.4 Beacon serial number : 86 33 034 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 3.5 Beacon serial number : 86 33 043 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 3.6 Beacon serial number : 86 33 044 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 : DPOD2005 Epoch : 2000.0 X = -2160725.514 m Y = -5643017.479 m Z = 2034836.961 m Sig X = 0.001 m Sig Y = 0.001 m Sig Z = 0.001 m VX = -0.0490 m/y VY = 0.0240 m/y VZ = 0.0213 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 : Socorro Island Location : Socorro Island GLOSS number : 162 Distance : 370 m Notes : Tie measured 05/1998 7. Local site ties 7.1 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 : May 1998 Additional information : Survey by IGN-F 7.2 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 : May 1998 Additional information : Survey by IGN-F 7.3 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) : 30.460 dZ (m) : -148.559 Accuracy (m) : 0.03 Date measured : Feb 1991 Additional information : Survey by IGN-F 7.4 Point description : Mark NOAA/BM3 (near the tide gauge) DOMES number : 40503M003 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 : May 1998 Additional information : Survey by IGN-F 8. Meteorological Instrumentation 8.1 Humidity sensor Model : MUC13 + transmitter M-UTN3 Manufacturer : SPSI Accuracy : Notes : 8.2 Pressure sensor Model : M-PaTN.8 Manufacturer : SPSI Accuracy : Height : 1.51 m below the current DORIS ref. point (SODB) Notes : long term stability = +/- 0.2 mb/year 8.3 Temperature sensor Model : Constructed for DORIS beacons Manufacturer : CEIS-TM Accuracy : 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