SEY1 Site Information Form International GPS Service See Instructions at: ftp://igscb.jpl.nasa.gov/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : David Maggert Date Prepared : 2008-07-03 Report Type : UPDATE If Update: Previous Site Log : sey1_20071217.log Modified/Added Sections : 12, 13 1. Site Identification of the GNSS Monument Site Name : Republic of Seychelles Permanent Four Character ID : SEY1 Monument Inscription : 4016-S IERS DOMES Number : 39801M001 CDP Number : none Monument Description : Seismic wellhead steel pipe Height of the Monument : 0.0254m Monument Foundation : Steel pipe grouted to granite Foundation Depth : 100m Marker Description : Mark in steel plate Date Installed : 1995-05-15 Geologic Characteristic : Bedrock Bedrock Type : Igneous Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (1-10 cm/11-50 cm/51-200 cm/over 200 cm) Fault zones nearby : (YES/NO/Name of the zone) Distance/activity : (multiple lines) Additional Information : (multiple lines) : Monument is a 1" Stainless steel plate : mounted on a 7" O.D. steel pipe (wellhead) : grouted to provide mechanical coupling to : bedrock (granite) to a depth of 100 m. : The mark consists of a dimple on the plate. 2. Site Location Information City or Town : La Misere State or Province : Mahe Island Country : Seychelles Tectonic Plate : East African Approximate Position (ITRF) X coordinate (m) : 3602870.9328 Y coordinate (m) : 5238175.0780 Z coordinate (m) : -516275.4452 Latitude (N is +) : -044025.3877 Longitude (E is +) : +0552845.8577 Elevation (m,ellips.) : 537.9123 Additional Information : Site is collocated with the seismic station : of UCSD on the lower pad of the former Air : Force Tracking Station,10km NW of the : International Airport at an altitute of 575m : above sea level. 3. GNSS Receiver Information 3.1 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : T334 Firmware Version : 3.2 link 3/9/1995 Elevation Cutoff Setting : 4 Date Installed : 1995-05-15T00:00Z Date Removed : 1996-08-25T00:00Z Temperature Stabiliz. : NONE Additional Information : Serial Port B connected to computer's serial : port (COM3). 3.2 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : T391 Firmware Version : 3.2 LINK 3/9/1995 Elevation Cutoff Setting : 4 Date Installed : 1996-08-25T00:00Z Date Removed : 1998-08-13T00:00Z Temperature Stabiliz. : NONE Additional Information : 3.3 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : T194 Firmware Version : 3.2 Elevation Cutoff Setting : 4 Date Installed : 1998-08-13T00:00Z Date Removed : 1999-04-29T00:00Z Temperature Stabiliz. : NONE Additional Information : Standard 8-channel T-Rogue receiver, 10Mb : flashcard, 30 sec sampling rate. 3.4 Receiver Type : ROGUE SNR-8000 Satellite System : GPS Serial Number : T194 Firmware Version : 3.2.32.8 Elevation Cutoff Setting : 4 Date Installed : 1999-04-29T00:00Z Date Removed : 2003-02-06T00:00Z Temperature Stabiliz. : NONE Additional Information : Serial Port B connected to computer's serial : port (COM3). 3.5 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : zr520013802 Firmware Version : CJ12 Elevation Cutoff Setting : 0 Date Installed : 2003-02-06T00:00Z Date Removed : 2004-06-21T00:00Z Temperature Stabiliz. : NONE Additional Information : 3.6 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : UC1200345005 Firmware Version : CN00 Elevation Cutoff Setting : 0 Date Installed : 2004-06-21T00:00Z Date Removed : 2005-04-01T02:14Z Temperature Stabiliz. : NONE Additional Information : 3.7 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : UC120031609 Firmware Version : CQ00 Elevation Cutoff Setting : 0 Date Installed : 2006-03-07T17:30Z Date Removed : 2006-11-20T00:00Z Temperature Stabiliz. : NONE Additional Information : 3.8 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : ZR220013847 Firmware Version : CQ00 Elevation Cutoff Setting : 0 Date Installed : 2007-04-09T21:30Z Date Removed : 2007-04-11T08:45Z Temperature Stabiliz. : NONE Additional Information : 3.9 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : UC1200325010 Firmware Version : CN00 Elevation Cutoff Setting : 0 Date Installed : 2007-06-29T00:00Z Date Removed : 2007-12-07T08:00Z Temperature Stabiliz. : NONE Additional Information : 3.10 Receiver Type : ASHTECH UZ-12 Satellite System : GPS Serial Number : ZR520021802 Firmware Version : CQ00 Elevation Cutoff Setting : 4 Date Installed : 2007-12-07T09:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : NONE Additional Information : 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS/GLONASS/GPS+GLONASS) Serial Number : (A5) Firmware Version : (A11) Elevation Cutoff Setting : (deg) Date Installed : (CCYY-MM-DDThh:mmZ) Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 4. GNSS Antenna Information 4.1 Antenna Type : AOAD/M_T DOME Serial Number : 427 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.5011 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : DOME Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 1995-05-15T00:00Z Date Removed : 1996-02-01T00:00Z Additional Information : Located within a PVC enclosure. 4.2 Antenna Type : AOAD/M_T DOME Serial Number : 487 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.5011 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : DOME Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 1996-02-01T00:00Z Date Removed : 1998-08-13T00:00Z Additional Information : Located within a PVC enclosure. 4.3 Antenna Type : AOAD/M_T DOME Serial Number : 233 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 1.2065 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : -6 Antenna Radome Type : DOME Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 1998-08-13T00:00Z Date Removed : 2003-02-06T00:00Z Additional Information : Antenna is within a PVC enclosure; 26" clear : raydome protects antenna. The antenna is : screwed onto a modified UNAVCO spike mount : with a fixed height of 1.2065m (the rod was : machined at 47.500"). 4.4 Antenna Type : ASH701945C_M DOME Serial Number : cr20004605 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 1.2065 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : -6 Antenna Radome Type : DOME Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 2003-02-06T00:00Z Date Removed : 2006-11-20T00:00Z Additional Information : Antenna is within a PVC enclosure; 26" clear : raydome protects antenna. The antenna is : screwed onto a modified UNAVCO spike mount : with a fixed height of 1.2065m (the rod was : machined at 47.500"). Antenna is aligned to magnetic north. 4.5 Antenna Type : ASH701945B_M DOME Serial Number : CR519992106 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 1.2065 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : -6 Antenna Radome Type : DOME Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 2007-04-09T21:30Z Date Removed : 2007-04-11T08:45Z Additional Information : Antenna is within a PVC enclosure; 26" clear : raydome protects antenna. The antenna is : screwed onto a modified UNAVCO spike mount : with a fixed height of 1.2065m (the rod was : machined at 47.500"). Antenna is aligned to magnetic north. 4.6 Antenna Type : ASH701945B_M DOME Serial Number : CR519993002 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 1.2065 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : -6 Antenna Radome Type : DOME Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 2007-06-29T00:00Z Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : Antenna is within a PVC enclosure; 26" clear : raydome protects antenna. The antenna is : screwed onto a modified UNAVCO spike mount : with a fixed height of 1.2065m (the rod was : machined at 47.500"). Antenna is aligned to magnetic north. 4.x Antenna Type : (A20, from rcvr_ant.tab; see instructions) Serial Number : (A*, but note the first A5 is used in SINEX) Antenna Reference Point : (BPA/BCR/XXX from "antenna.gra"; see instr.) Marker->ARP Up Ecc. (m) : (F8.4) Marker->ARP North Ecc(m) : (F8.4) Marker->ARP East Ecc(m) : (F8.4) Alignment from True N : (deg; + is clockwise/east) Antenna Radome Type : (A4 from rcvr_ant.tab; see instructions) Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : (CCYY-MM-DDThh:mmZ) Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 5. Surveyed Local Ties 5.1 Tied Marker Name : none Tied Marker Usage : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc) Tied Marker CDP Number : Tied Marker DOMES Number : Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : 0 dy (m) : 0 dz (m) : 0 Accuracy (mm) : Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc) Date Measured : (CCYY-MM-DDThh:mmZ) Additional Information : 5.x Tied Marker Name : Tied Marker Usage : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc) Tied Marker CDP Number : (A4) Tied Marker DOMES Number : (A9) Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : dy (m) : dz (m) : Accuracy (mm) : (mm) Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc) Date Measured : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 6. Frequency Standard 6.1 Standard Type : INTERNAL Input Frequency : Effective Dates : 1995-05-15/CCYY-MM-DD Notes : (multiple lines) 6.x Standard Type : (INTERNAL or EXTERNAL H-MASER/CESIUM/etc) Input Frequency : (if external) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 7. Collocation Information 7.1 Instrumentation Type : Seismic Status : Permanent Effective Dates : 1998-08-13/CCYY-MM-DD Notes : UCSD operates a seismic station collocated : with the GPS site. 7.x Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) Status : (PERMANENT/MOBILE) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8. Meteorological Instrumentation 8.1.1 Humidity Sensor Model : Capacitance Probe Manufacturer : Paroscientific Serial Number : Data Sampling Interval : 5 minutes Accuracy (% rel h) : +/- 2 Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : 2 m Calibration date : (CCYY-MM-DD) Effective Dates : 2003-02-06/CCYY-MM-DD Notes : 8.1.x Humidity Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy (% rel h) : (% rel h) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.2.1 Pressure Sensor Model : Digiquartz Barometric Standard Manufacturer : Paroscientific Serial Number : Data Sampling Interval : 5 minutes Accuracy : 0.010% Height Diff to Ant : 2 m Calibration date : (CCYY-MM-DD) Effective Dates : 2003-02-06/CCYY-MM-DD Notes : 8.2.x Pressure Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (hPa) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.3.1 Temp. Sensor Model : Platinum Resistance Temperature Probe Manufacturer : Paroscientific Serial Number : Data Sampling Interval : 5 minutes Accuracy : 0.5 deg C Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : 2 m Calibration date : (CCYY-MM-DD) Effective Dates : 2003-02-06/CCYY-MM-DD Notes : 8.3.x Temp. Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (hPa) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.4.1 Water Vapor Radiometer : none Manufacturer : Serial Number : Distance to Antenna : Height Diff to Ant : Calibration date : (CCYY-MM-DD) Effective Dates : Notes : 8.4.x Water Vapor Radiometer : Manufacturer : Serial Number : Distance to Antenna : (m) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.5.x Other Instrumentation : 9. Local Ongoing Conditions Possibly Affecting Computed Position 9.1.x Radio Interferences : (TV/CELL PHONE ANTENNA/RADAR/etc) Observed Degredations : (SN RATIO/DATA GAPS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.2.x Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.3.1 Signal Obstructions : TREES Effective Dates : 2004-06-21/CCYY-MM-DD Additional Information : Continuously growing trees around : antenna will affect signal reception. 9.3.x Signal Obstructions : (TREES/BUILDLINGS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 10. Local Episodic Effects Possibly Affecting Data Quality 10.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : Seychelles National Oil Company Preferred Abbreviation : SNOC Mailing Address : P.O. Box 230 : Maison du Peuple : Victoria, Mahe : Republic of Seychelles Primary Contact Contact Name : Patrick Samson Telephone (primary) : +248-225182 Telephone (secondary) : Fax : +284-225177 E-mail : pjsamson@snoc.sc Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : Jet Propulsion Laboratory Preferred Abbreviation : JPL Mailing Address : 4800 Oak Grove Drive : Pasadena, CA : USA 91109 Primary Contact Contact Name : David A. Stowers Telephone (primary) : 818-354-7055 Telephone (secondary) : Fax : 818-393-4965 E-mail : dstowers@jpl.nasa.gov Secondary Contact Contact Name : UNAVCO Network Engineer Telephone (primary) : 303-381-7500 Telephone (secondary) : Fax : 303-381-7451 E-mail : ggn-ops@ls.unavco.org, andreatta@unavco.org Additional Information : Victoria Andreatta (303.381.7458) 13. More Information Primary Data Center : JPL (ODC-Operational Data Center) Secondary Data Center : CDDIS (GDC-Global Data Center) URL for More Information : Hardcopy on File Site Map : Y Site Diagram : Y Horizon Mask : N Monument Description : Y Site Pictures : Y Additional Information : Updated antenna graphics below. Antenna Graphics with Dimensions ASH701945B_M +-------+ / + \ <-- 0.1280 L2 | + | <-- 0.1100 L1 +-----------------+-------------+------------------+ <-- 0.1006 TCR | | | | | | | | +-+--------------------------------------------------+-+ <-- 0.0376 +-------------------+-------------+--------------------+ <-- 0.0346 BCR | | | | +------x------+ <-- 0.0000 BPA=ARP <-- 0.3794 --> ARP: Antenna Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering TGP: Top of Ground Plane BGP: Bottom of Ground Plane TPA: Top of Preamplifier BPA: Bottom of Preamplifier TOP: Top of Pole All dimensions are in meters.