YELLOWKNIFE 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 : YELLOWKNIFE Site DOMES number : 40127 Host agency : NRCan City : Yellowknife State or province : North-West Territories Country : CANADA Tectonic plate : North America Geological information : Geographical coordinates (ITRF) : North Latitude : 62 deg 28' 52'' East Longitude : -114 deg 28' 48'' Ellipsoid height : 182 m Approximate altitude : 209 m 2. DORIS antenna and reference point information 2.1 Four character ID : YELA Antenna model : Alcatel Antenna serial number : 48 IERS DOMES number : 40127S007 CNES/IGN number : 401271 CTDP number : 51 Date installed (dd/mm/yy): 06/06/1989 Date removed (dd/mm/yy) : 16/10/2001 Antenna support type : 1 metre tower Installed on : Front wall of the station building. Height above ground mark : m Ground mark type : None Ground mark DOMES number : 40127 Notes : 2.2 Four character ID : YELB Antenna model : Starec 52291 type Antenna serial number : 64 IERS DOMES number : 40127S008 CNES/IGN number : 401272 CTDP number : 220 Date installed (dd/mm/yy): 19/10/2001 Date removed (dd/mm/yy) : 15/05/2007 Antenna support type : 2 m high, 46 cm diameter concrete pillar Installed on : Bedrock (3 m deep anchoring) Height above ground mark : 0.478 m Ground mark type : Domed brass mark on concrete pillar Ground mark DOMES number : 40127 Notes : Previously published value of the antenna height : (0.481) updated after a new measurement 2.3 Four character ID : YEMB Antenna model : Starec 52291 type Antenna serial number : 122 IERS DOMES number : 40127S009 CNES/IGN number : 401273 CTDP number : 278 Date installed (dd/mm/yy): 16/05/2007 Date removed (dd/mm/yy) : Antenna support type : 2 m high, 46 cm diameter concrete pillar Installed on : Bedrock (3 m deep anchoring) Height above ground mark : 0.628 m Ground mark type : Domed brass mark on concrete pillar Ground mark DOMES number : 40127 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 : 8633049 Beacon model : 1.0 USO serial number : 1.695 4 Char. ID of the REF point : YELA Date installed (dd/mm/yy) : 01/11/1988 Date removed (dd/mm/yy) : 01/12/1988 3.2 Beacon serial number : 8633051 Beacon model : 1.0 USO serial number : 1.365 4 Char. ID of the REF point : YELA Date installed (dd/mm/yy) : 06/06/1989 Date removed (dd/mm/yy) : 02/09/1997 3.3 Beacon serial number : 8633038 Beacon model : 1.0 USO serial number : 2.1048 4 Char. ID of the REF point : YELA Date installed (dd/mm/yy) : 03/09/1997 Date removed (dd/mm/yy) : 16/10/2001 3.4 Beacon serial number : 8633038 Beacon model : 1.0 USO serial number : 2.1048 4 Char. ID of the REF point : YELB Date installed (dd/mm/yy) : 16/10/2001 Date removed (dd/mm/yy) : 15/05/2005 3.5 Beacon serial number : 2819002 Beacon model : 3.0 USO serial number : NO USO 4 Char. ID of the REF point : YEMB Date installed (dd/mm/yy) : 15/05/2005 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (YEMB) Solution : ITRF2000 (connection to YELL) Epoch : 1997.0 X = -1224404.999 m Y = -2689216.426 m Z = 5633649.624 m Sig X = 0.004 m Sig Y = 0.004 m Sig Z = 0.004 m VX = -0.0208 m/y VY = -0.0044 m/y VZ = -0.0009 m/y Sig VX = 0.0002 m/y Sig VY = 0.0003 m/y Sig VZ = 0.0006 m/y 5. IERS co-location information 5.1 Instrument type : GPS Status : Permanent DOMES number of the instrument ref. point : 40127M003 Notes : 5.2 Instrument type : VLBI Status : Permanent DOMES number of the instrument ref. point : 40127M004 Notes : 6. Tide gauge co-location information 7. Local site ties 7.1 Point description : DORIS mark on concrete pillar DOMES number : Differential components from the current DORIS ref. point (YEMB) to the above point (in the ITRS) : dX (m) : 0.116 dY (m) : 0.259 dZ (m) : -0.561 Accuracy (m) : 0.001 Date measured : October 2001 & May 2007 Additional information : Survey by IGN-F 7.2 Point description : DORIS Starec antenna reference point (YELB) DOMES number : 40127S008 Differential components from the current DORIS ref. point (YEMB) to the above point (in the ITRS) : dX (m) : 0.027 dY (m) : 0.062 dZ (m) : -0.134 Accuracy (m) : 0.001 Date measured : October 2001 & May 2007 Additional information : Survey by IGN-F 7.3 Point description : DORIS Alcatel antenna reference point (YELA) DOMES number : 40127S007 Differential components from the current DORIS ref. point (YEMB) to the above point (in the ITRS) : dX (m) : -19.038 dY (m) : -10.956 dZ (m) : -4.501 Accuracy (m) : 0.002 Date measured : October 2001 Additional information : Survey by IGN-F 7.4 Point description : YELL GPS monument 889201 DOMES number : 40127M003 Differential components from the current DORIS ref. point (YEMB) to the above point (in the ITRS) : dX (m) : -47.475 dY (m) : 0.381 dZ (m) : -11.479 Accuracy (m) : 0.001 Date measured : October 2001 Additional information : Survey by IGN-F 7.5 Point description : VLBI Mark CDP 7296 DOMES number : 40127M004 Differential components from the current DORIS ref. point (YEMB) to the above point (in the ITRS) : dX (m) : 5.458 dY (m) : -56.774 dZ (m) : -29.475 Accuracy (m) : 0.002 Date measured : December 1993 Additional information : GPS - VLBI survey GSD/M93-301 (from IGS site log) 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 : 0.5 m below the current DORIS ref. point (YEMB) 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