UTAR _  Site Information Form __ International GPS Service for Geodynamics

0.   Form
Prepared by (full name)  : J.C. Ruegg ,  J.B. de Chabalier
     Date Prepared            : 31-DEC-2003
     Report Type              : UPDATE

1.   Site Identification of the GPS Monument

     Site Name                : Arica tracking station
     Four Character ID        : UTAR
     Monument Inscription     : 
     IERS DOMES Number   : 
     CDP Number               : (XXXX)
     Date Installed           : 05-DEC-2003       
     Geologic Characteristic  : GRAVEL/SAND
       Bedrock Type           : SEDIMENTARY
       Bedrock Condition      :  on the top of a 2 level building
       Fracture Spacing       : 
      Notes :  installed on the top of the Seismological Centre, Univsity of Tarapaca,
      Campus Saucache, Arica (Chile). 
      Local correspondant: Prof. Bianca Glass, Directora del Centro Sismologico Lautaro
      Ponce, University of Tarapaca. Sec. correspondant: Nebur Alvarez 
      Gobernacion Provincial, Calama
      A steel mark type IPGP/DGF is sealed on the top of the building  
      No auxilliary point ; 
     Additional Information   : Geological Province: Andean Cordillera
                              : Local Geology: : 
                              : Geological information from 	xxx
                              : Program:.

2.   Site Location Information

     City or Town             :  Arica 
     Country                  :   Chile
     Tectonic Plate           : South American but in the convergence area of Nazca/ SOAM plates
     Approximate Position
       X coordinate (m)       :   2040107.64
       Y coordinate (m)       :  -5696703.58
       Z coordinate (m)       :  -2009987.74
       Latitude (deg)         :  -18.4906
       Longitude (deg)        :  -70.2965
       Elevation (m)          :    87.61
Additional Information   : Latitude, Longitude and Elevation derived from Gamit calculation
    
3.   GPS Receiver Information

3.1  Receiver Type            :   ASHTECH Xtreme /  UZ-12   
     Serial Number            :    ZR 220023 053
     Firmware Version         :    7.xxx   ZB00      0A13 
     Date Installed           :   30-NOV-2003   
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)


3.2  Receiver Type            : 
     Serial Number            : 
     Firmware Version         : 0
     Date Installed           : 
     Date Removed          : (dd-MMM-yyyy hh:mm UT)



4.   GPS Antenna Information

4.1  Antenna Type             :   ASHTECH GEODETIC IV
     Serial Number            : 	930   
     Antenna Height (m)       : 0.000  (to be verified)
     Antenna Reference Point  : ARP = dhpab
     Degree Offset from North :  0.0
     Antenna Radome Type      :
     Date Installed           :   30-NOV-2003  hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)

4.2  Antenna Type             : 
     Serial Number            : 
     Antenna Height (m)       : 
     Antenna Reference Point  :
     Degree Offset from North :
     Antenna Radome Type      : 
     Date Installed           :                      hh:mm UT
     Date Removed             : 

5.   Local Site Ties :              local ties to AR10, AR11  points installed in 1992 by IPG Paris
5.1  Monument Name            : 
     Site Ref CDP Number      : 
     Site Ref Domes Number    : 
Differential Components from GPS Mark to Site Reference (ITRS)
       dx (m)                 : 
       dy (m)                 : 
       dz (m)                 : 
     Accuracy (mm)            : (mm)
     Date Measured            : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : 

6.   Frequency Standard :  NO
6.1  Standard Type            : 
       Frequency              :
       Effective Dates        :

7.   Collocation Information
7.x  Instrumentation Type     :   No
       Status                 : (PERMANENT/MOBILE)
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)

8.   Meteorological Instrumentation :  No
8.1  Humidity Sensor Model    :
8.2  Pressure Sensor Model    :
8.3  Temperature Sensor Model :
8.4  Water Vapor Radiometer   :
8.5  Other Instrumentation    : (multiple lines) pm

9.   On-Site, Point of Contact Agency Information
     Agency                   :   DGF _ Departamento de Geofisica _ Universidad de Chile
     Mailing Address          :   Blanco Encalada 2085, Santiago Chile
     Primary Contact          :   Jaime Campos   Telephone (primary)    :  02 678 43 06         Fax   : 
       E-mail                 :  jaime@dgf.uchile.cl
     Secondary Contact        :   De Chabalier Jean-Bernard, Ruegg J.Claude , IPG Paris France
       Telephone (primary)    : 00 33 1 44 27 48 93    Telephone (secondary)  : 303-497-8002
       Fax                    : 00 33 1 44 27 38 94    E-mail                 :   ruegg@ipgp.jussieu.fr

10.  Responsible Agency (if different from 9.)

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

ASH701975.01A

                      ------- 
                  /               \
            /            +              \                   <--  0.05640  L1
       /                 +                   \              <--  0.06220  L2
       +-------------------------------------+              <--  0.0460
       +-------------------------------------+              <--  0.0430 
              \                      /                
                \                  /
                 ------------------                   <--  0.000  ARP=TOP


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