SYOWA DORIS site description form 0. Form Prepared by : SIMB (DORIS installation and maintenance department) Date prepared : 22/02/2024 Report type : UPDATE 1. Site location information Site name : SYOWA Site DOMES number : 66006 Host agency : Nippon Institute of Polar Research City : Syowa State or province : Antarctica Country : Japanese base Tectonic plate : ANTA Geological information : Geographical coordinates (ITRF) : North Latitude : -69 deg 0' 18'' East Longitude : 39 deg 34' 43'' Ellipsoid height : 42 m Approximate altitude : 20 m 2. DORIS antenna and reference point information 2.1 Four character ID : SYOB Antenna model : Starec 52290 type Antenna serial number : 21 IERS DOMES number : 66006S001 CNES/IGN number : 660061 DORIS SSALTO number : 54 Date installed (dd/mm/yy): 10/02/1993 Date removed (dd/mm/yy) : 03/05/1998 Antenna support type : Guyed 6 m tower Installed on : Concrete pad Height above ground mark : 6.430 m Ground mark type : Mark (unknown type) Ground mark DOMES number : 66006M001 Notes : 2.2 Four character ID : SYPB Antenna model : Starec 52291 type Antenna serial number : 59 IERS DOMES number : 66006S003 CNES/IGN number : 660062 DORIS SSALTO number : 84 Date installed (dd/mm/yy): 29/01/1999 Date removed (dd/mm/yy) : 30/01/2014 Antenna support type : Stainless steel triangular plate Installed on : 1.2m high reinforced concrete pillar Height above ground mark : 0.53 m Ground mark type : Domed stainless steel mark Ground mark DOMES number : 66006M003 Notes : 2.3 Four character ID : SYQB Antenna model : Starec 52291 type Antenna serial number : 169 IERS DOMES number : 66006S005 CNES/IGN number : 660062 DORIS SSALTO number : 1084 Date installed (dd/mm/yy): 06/02/2014 Date removed (dd/mm/yy) : 13/01/2024 Antenna support type : Stainless steel triangular plate Installed on : 1.2m high reinforced concrete pillar Height above ground mark : 0.497 m Ground mark type : Domed stainless steel mark Ground mark DOMES number : 66006M003 Notes : 3. DORIS beacons information 3.1 Beacon serial number : 8633054 Beacon model : 1.0 USO serial number : 1.581 4 Char. ID of the REF point : SYOB Date installed (dd/mm/yy) : 01/02/1993 Date removed (dd/mm/yy) : 04/05/1998 3.2 Beacon serial number : 8633054 Beacon model : 1.0 USO serial number : 1.581 4 Char. ID of the REF point : SYPB Date installed (dd/mm/yy) : 29/01/1999 Date removed (dd/mm/yy) : 28/01/2008 3.3 Beacon serial number : 3690065 Beacon model : 3.0 USO serial number : 3.493 4 Char. ID of the REF point : SYPB Date installed (dd/mm/yy) : 29/01/2008 Date removed (dd/mm/yy) : 05/02/2014 3.4 Beacon serial number : 3690065 Beacon model : 3.0 USO serial number : 3.493 4 Char. ID of the REF point : SYQB Date installed (dd/mm/yy) : 06/02/2014 Date removed (dd/mm/yy) : 13/01/2024 4. ITRF coordinates and velocities of the current DORIS ref. point (SYQB) Solution : dpod2014_04 Epoch : 2000.0 X = 1766505.872 m Y = 1460266.975 m Z = -5932207.640 m Sig X = 0.002 m Sig Y = 0.002 m Sig Z = 0.002 m VX = 0.00491 m/y VY = -0.00113 m/y VZ = 0.00003 m/y Sig VX = m/y Sig VY = m/y Sig VZ = m/y 5. IERS colocation information 5.1 Instrument type : GNSS Status : Permanent DOMES number of the instrument ref. point : 66006S002 Notes : IGS station (SYOG) 5.2 Instrument type : VLBI Status : Permanent DOMES number of the instrument ref. point : 66006S004 Notes : CDP #7342 6. Tide Gauge colocation information 6.1 Name : Syowa Location : Syowa GLOSS number : 95 Distance : 1 km Notes : 7. Local site ties 7.1 Point description : DORIS Starec antenna reference point (SYOB) DOMES number : 66006S001 Differential components from the DORIS ref. point (SYPB) to the above point (in the ITRS) : dX (m) : -6.973 dY (m) : 7.447 dZ (m) : -4.098 Accuracy (m) : 0.05 Date measured : 31/01/1999 Additional information : NIPR source 7.2 Point description : VLBI station #7342 DOMES number : 66006S004 Differential components from the DORIS ref. point (SYPB) to the above point (in the ITRS) : dX (m) : -337.009 dY (m) : 190.344 dZ (m) : -53.428 Accuracy (m) : 0.02 Date measured : 02/06/2004 Additional information : source NIPR 7.3 Point description : DORIS 2 mark on a concrete pillar DOMES number : 66006M003 Differential components from the DORIS ref. point (SYPB) to the above point (in the ITRS) : dX (m) : -0.146 dY (m) : -0.121 dZ (m) : 0.494 Accuracy (m) : 0.001 Date measured : 01/08/1999 Additional information : NIPR/CAEM (K.Shibuya) 7.4 Point description : IGS station (SYOG) DOMES number : 66006S002 Differential components from the DORIS ref. point (SYPB) to the above point (in the ITRS) : dX (m) : -298.055 dY (m) : 23.376 dZ (m) : -89.987 Accuracy (m) : 0.002 Date measured : 01/08/1999 Additional information : NIPR/CAEM (K.Shibuya), survey May & Aug 1999 7.3 Point description : DORIS Starec antenna reference point (SYPB) DOMES number : 66006S003 Differential components from the DORIS ref. point (SYQB) to the above point (in the ITRS) : dX (m) : 0.007 dY (m) : 0.005 dZ (m) : -0.031 Accuracy (m) : 0.001 Date measured : 31/01/2014 Additional information : Survey by GSI 7.4 Point description : Mark under the DORIS antenna DOMES number : 66006M003 Differential components from the DORIS ref. point (SYQB) to the above point (in the ITRS) : dX (m) : -0.137 dY (m) : -0.114 dZ (m) : 0.464 Accuracy (m) : 0.001 Date measured : 31/01/2014 Additional information : Survey by GSI 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 : m above the current DORIS ref. point (SYRB) 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 : IGN Institut Geographique National Mailing address : Service de Geodesie et de Metrologie : 73 avenue de Paris : 94165 SAINT-MANDE Cedex FRANCE Telephone : + 33 1 43 98 83 63 E-mail : jerome (.) saunier (@) ign.fr Secondary contact: Name : Vincent GARCIA Agency : CNES Centre National d'Etudes Spatiales Mailing address : CNES (DNO/TSA/IS) : 18 Avenue Edouard Belin : 31401 TOULOUSE Cedex FRANCE Telephone : + 33 5 61 27 37 75 E-mail : vincent (.) garcia (@) cnes.fr