BARB Site Information Form
     International GPS Service for Geodynamics


0.   Form

     Prepared by (full name)  : Linda Nussear
     Date Prepared            : 12-DEC-1997
     Report Type              : NEW
     Prepared Using           :


1.   Site Identification of the GPS Monument

     Site Name                : Barbados
     Four Character ID        : BARB
     Monument Inscription     : NONE
     IERS DOMES Number        : 43401S001
     CDP Number               : (XXXX)
     Date Installed           : 29-NOV-1997
     Geologic Characteristic  : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc)
       Bedrock Type           : (IGNEOUS/METAMORPHIC/SEDIMENTARY)
       Bedrock Condition      : (FRESH/JOINTED/WEATHERED)
       Fracture Spacing       : (1-10 cm/10-50 cm/50-200 cm/over 200 cm)
       Notes                  : (multiple lines)
     Additional Information   : (multiple lines)


2.   Site Location Information

     City or Town             : Bridgetown
     State or Province        : St. Michael
     Country                  : Barbados
     Tectonic Plate           :
     Approximate Position
       X coordinate (m)       : 3143385.2691
       Y coordinate (m)       : -5359662.8671
       Z coordinate (m)       : 1434851.4054
       Latitude (deg)         : 13.0878   N
       Longitude (deg)        : 300.39117 E
       Elevation (m)          : -86.2782
     Additional Information   : The site is at the Coastal Zone Management
                              : Unit building


3.   GPS Receiver Information

3.1  Receiver Type            : ASHTECH Z-SURVEYOR
     Serial Number            : UZ01603
     Firmware Version         : UB00
     Date Installed           : 29-NOV-1997
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   :

3.x  Receiver Type            :
     Serial Number            :
     Firmware Version         :
     Date Installed           : (dd-MMM-yyyy hh:mm UT)
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)


4.   GPS Antenna Information

4.1  Antenna Type             : ASHTECH CHOKERING WITH DOME
     Serial Number            : CR1537
     Antenna Height (m)       : 0.0
     Antenna Reference Point  : BPA
     Degree Offset from North :
     Antenna Radome Type      : Ashtech Radome
     Date Installed           : 29-NOV-1997
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)

4.x  Antenna Type             :
     Serial Number            :
     Antenna Height (m)       : (m)
     Antenna Reference Point  : (ARP/BCR/BPA)
     Degree Offset from North :
     Antenna Radome Type      :
     Date Installed           : (dd-MMM-yyyy hh:mm UT)
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)


5.   Local Site Ties

5.x  Monument Name            :
     Site Ref CDP Number      : (XXXX)
     Site Ref Domes Number    : (XXXXXXXXX)
     Differential Components from GPS Mark to Site Reference (ITRS)
       dx (m)                 : (m)
       dy (m)                 : (m)
       dz (m)                 : (m)
     Accuracy (mm)            : (mm)
     Date Measured            : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)


6.   Frequency Standard

6.1  Standard Type            : INTERNAL
       Frequency              :
       Effective Dates        : 29-NOV-1997 - dd-MMM-yyyy)
       Notes                  : (multiple lines)

6.x  Standard Type            : (H-MASER/CESIUM/QUARTZ/INTERNAL/RUBIDIUM)
       Frequency              :
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)


7.   Collocation Information

7.x  Instrumentation Type     : (DORIS/GLONASS/PRARE/SLR/VLBI)
       Status                 : (PERMANENT/MOBILE)
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)


8.   Meteorological Instrumentation

8.1  Humidity Sensor Model    :
       Manufacturer           :
       Data Frequency         :
       Accuracy (% rel h)     : (% rel h)
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)

8.2  Pressure Sensor Model    :
       Manufacturer           :
       Data Frequency         :
       Accuracy (mbar)        : (mbar)
       Height Diff to GPS (m) : (m)
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)

8.3  Temperature Sensor Model :
       Manufacturer           :
       Data Frequency         :
       Accuracy (deg C)       : (deg C)
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)

8.4  Water Vapor Radiometer   :
       Manufacturer           :
       Distance to GPS (m)    : (m)
       Elev Diff to GPS (m)   : (m)
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)

8.5  Other Instrumentation    : (multiple lines)


9.   On-Site, Point of Contact Agency Information

     Agency                   : Coastal Zone Management Unit
     Mailing Address          : Bay Street, St. Michael  Barbados
     Primary Contact
       Contact Name           : Lester Toppin
       Telephone (primary)    : 246-228-5950
       Telephone (secondary)  :
       Fax                    :
       E-mail                 : coastal@caribsurf.com
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Additional Information   : (multiple lines)


10.  Responsible Agency (if different from 9.)

     Agency                   : Geosciences Laboratory, NOS/NOAA
     Mailing Address          : NOAA, N/NGS6
                              : SSMC III, Sta 9111
                              : 1315 East-West Highway
                              : Silver Spring  MD  20910
                              : U.S.A.
     Primary Contact
       Contact Name           : Miranda Chin
       Telephone (primary)    : 301-713-2844
       Telephone (secondary)  :
       Fax                    : 301-713-4475
       E-mail                 : miranda@tango.grdl.noaa.gov
     Secondary Contact
       Contact Name           : Linda Nussear
       Telephone (primary)    : 301-713-2845
       Telephone (secondary)  :
       Fax                    : 301-713-4475
       E-mail                 : linda@gracie.grdl.noaa.gov
     Additional Information   :


11.  More Information

     URL for More Information :
     Hardcopy on File
       Site Map               : (Y)
       Site Diagram           : (Y)
       Horizon Mask           : (Y)
       Monument Description   : (Y)
       Site Pictures          : (Y)
     Additional Information   : (multiple lines)
     Antenna Graphics with Dimensions


                   Ashtech: DORNE MARGOLIN ASH

                         -----
                     /     +     \                        <--  0.128  L2
                    |      +      |                       <--  0.110  L1
  +--------------------------------------------------+    <--  0.102  TCR
  |                                                  |
  |                                                  |
  |                                                  |
  |                                                  |
+-+--------------------------------------------------+-+  <--  0.038
+-------------------+-------------+--------------------+  <--  0.035  BCR
                    |             |
                   =|             |
                    +------x------+                       <--  0.000  ARP

<--                      0.381                       -->


   ARP: Antenna Reference Point
   L1 : L1 Phase Center                   L2 : L2 Phase Center
   TCR: Top of Chokering                  BCR: Bottom of Chokering