AMSTERDAM 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 : AMSTERDAM Site DOMES number : 91401 Host agency : Laboratoire de Geophysique City : Ile Amsterdam State or province : T.A.A.F. Country : FRANCE (Amsterdam Island) Tectonic plate : Antarctica Geological information : Geographical coordinates (ITRF) : North Latitude : -37 deg 47' 55'' East Longitude : 77 deg 34' 17'' Ellipsoid height : 59 m Approximate altitude : 30 m 2. DORIS antenna and reference point information 2.1 Four character ID : AMSA Antenna model : Alcatel Antenna serial number : 21 IERS DOMES number : 91401S001 CNES/IGN number : 914011 CTDP number : 8 Date installed (dd/mm/yy): 01/02/1987 Date removed (dd/mm/yy) : 21/04/1997 Antenna support type : 60 cm Metallic interface Installed on : Rooftop of a one storey building Height above ground mark : m Ground mark type : none Ground mark DOMES number : 91401M001 Notes : 2.2 Four character ID : AMSB Antenna model : Starec 52290 type Antenna serial number : IERS DOMES number : 91401S002 CNES/IGN number : 914012 CTDP number : 73 Date installed (dd/mm/yy): 21/04/1997 Date removed (dd/mm/yy) : 28/03/2001 Antenna support type : Concrete pillar with anodized aluminium plate Installed on : Pillar erected on rock ground (old lava flow) Height above ground mark : 0.477 m Ground mark type : Domed mark at the center of the metal plate fixed : on pillar top. Ground mark DOMES number : 91401M002 Notes : Antenna tilt due to plate corrosion 2.3 Four character ID : AMTB Antenna model : Starec 52291 type Antenna serial number : 62 IERS DOMES number : 91401S003 CNES/IGN number : 914013 CTDP number : 92 Date installed (dd/mm/yy): 29/03/2001 Date removed (dd/mm/yy) : 24/11/2005 Antenna support type : Concrete pillar with stainless steel plate Installed on : Pillar erected on rock ground (old lava flow) Height above ground mark : 0.478 m Ground mark type : Domed mark at the center of the metal plate fixed : on pillar top. Ground mark DOMES number : 91401M002 Notes : antenna and plate change. 2.4 Four character ID : AMTB Antenna model : Starec 52291 type Antenna serial number : 126 IERS DOMES number : 91401S003 CNES/IGN number : 914013 CTDP number : 92 Date installed (dd/mm/yy): 24/11/2005 Date removed (dd/mm/yy) : 17/04/2007 Antenna support type : Concrete pillar with stainless steel plate Installed on : Pillar erected on rock ground (old lava flow) Height above ground mark : 0.478 m Ground mark type : Domed mark at the center of the metal plate Ground mark DOMES number : 91401M002 Notes : Antenna change without centering adjustment : 2 GHz phase center offset: 7 mm south-east 2.5 Four character ID : AMUB Antenna model : Starec 52291 type Antenna serial number : 126 IERS DOMES number : 91401S004 CNES/IGN number : 914014 CTDP number : 275 Date installed (dd/mm/yy): 17/04/2007 Date removed (dd/mm/yy) : Antenna support type : Concrete pillar with stainless steel plate Installed on : Pillar erected on rock ground (old lava flow) Height above ground mark : 0.629 m Ground mark type : Domed mark at the center of the metal plate Ground mark DOMES number : 91401M002 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 : 86 27 007 Beacon model : 1.0 USO serial number : 1.474 4 Char. ID of the REF point : AMSA Date installed (dd/mm/yy) : 01/02/1987 Date removed (dd/mm/yy) : 30/10/1990 3.2 Beacon serial number : 86 27 006 Beacon model : 1.0 USO serial number : 1.367 4 Char. ID of the REF point : AMSA Date installed (dd/mm/yy) : 01/11/1990 Date removed (dd/mm/yy) : 10/09/1994 3.3 Beacon serial number : 86 33 037 Beacon model : 1.0 USO serial number : 1.577 4 Char. ID of the REF point : AMSA Date installed (dd/mm/yy) : 10/09/1994 Date removed (dd/mm/yy) : 21/04/1997 3.4 Beacon serial number : 86 33 037 Beacon model : 1.0 USO serial number : 1.577 4 Char. ID of the REF point : AMSB Date installed (dd/mm/yy) : 21/04/1997 Date removed (dd/mm/yy) : 28/03/2001 3.5 Beacon serial number : 86 33 037 Beacon model : 1.0 USO serial number : 1.577 4 Char. ID of the REF point : AMTB Date installed (dd/mm/yy) : 29/03/2001 Date removed (dd/mm/yy) : 20/07/2003 3.6 Beacon serial number : 28 19 030 Beacon model : 3.0 USO serial number : 3.336 4 Char. ID of the REF point : AMTB Date installed (dd/mm/yy) : 23/11/2003 Date removed (dd/mm/yy) : 08/09/2005 3.7 Beacon serial number : 28 19 050 Beacon model : 3.0 USO serial number : 3.376 4 Char. ID of the REF point : AMTB Date installed (dd/mm/yy) : 10/09/2005 Date removed (dd/mm/yy) : 4. ITRF coordinates and velocities of the current DORIS ref. point (AMUB) Solution : ITRF2000 position (derived from AMTB) ITRF2005 velocities (not biased by progressive antenna tilt) Epoch : 1997.0 X = 1086063.032 m Y = 4927948.669 m Z = -3887840.068 m Sig X = 0.023 m Sig Y = 0.018 m Sig Z = 0.015 m VX = -0.0109 m/y VY = 0.0039 m/y VZ = -0.0031 m/y Sig VX = 0.0005 m/y Sig VY = 0.0004 m/y Sig VZ = 0.0004 m/y 5. IERS co-location information 6. Tide gauge co-location information 7. Local site ties 7.1 Point description : Mark on the DORIS concrete pillar DOMES number : 91401M002 Differential components from the current DORIS ref. point (AMUB) to the above point (in the ITRS) : dX (m) : -0.107 dY (m) : -0.485 dZ (m) : 0.386 Accuracy (m) : 0.001 Date measured : April 2007 Additional information : Survey by IGN-F 7.2 Point description : DORIS Starec antenna reference point (AMTB) DOMES number : 91401S003 Differential components from the current DORIS ref. point (AMUB) to the above point (in the ITRS) : dX (m) : -0.026 dY (m) : -0.117 dZ (m) : 0.093 Accuracy (m) : 0.001 Date measured : March 2001 Additional information : Survey by IGN-F 7.3 Point description : DORIS Starec antenna reference point (AMSB) DOMES number : 91401S002 Differential components from the current DORIS ref. point (AMUB) to the above point (in the ITRS) : dX (m) : -0.026 dY (m) : -0.117 dZ (m) : 0.093 Accuracy (m) : 0.001 Date measured : April 2007 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 : 1.3 m below the current DORIS ref. point (AMUB) 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