HOFN Site Information Form
     International GPS Service for Geodynamics


0.   Form

     Prepared by (full name)  : Dr. Wolfgang Schlueter
                              : Klaus Roettcher
                              : Uwe Hessels
                              : Rudi Stoeger
     Date Prepared            : 03-AUG-1999
     Report Type              : UPDATE
     Prepared Using           :


1.   Site Identification of the GPS Monument

     Site Name                : Hoefn / Iceland
     Four Character ID        : HOFN
     Monument Inscription     : Bolt / Steel Plate / Chimney Pillar
     IERS DOMES Number        : 10204M002
     CDP Number               :
     Date Installed           : 27-MAY-1997 00:00 UT
     Geologic Characteristic  :
       Bedrock Type           :
       Bedrock Condition      :
       Fracture Spacing       :
       Notes                  :
     Additional Information   :


2.   Site Location Information

     City or Town             : Hoefn
     State or Province        :
     Country                  : Iceland
     Tectonic Plate           : Eurasian
     Approximate Position
       X coordinate (m)       : 2679689.848
       Y coordinate (m)       : -727951.343
       Z coordinate (m)       : 5722788.898
       Latitude (deg)         :  64.2672778 N
       Longitude (deg)        :  15.1979167 W
       Elevation (m)          :  82.5
     Additional Information   :


3.   GPS Receiver Information

3.1  Receiver Type            : TRIMBLE 4000SSI
     Serial Number            : 3503A09374
     Firmware Version         : 7.12
     Date Installed           : 27-MAY-1997 00:00 UT
     Date Removed             : 31-JUL-1999 14:00 UT
     Additional Information   :

3.2  Receiver Type            : TRIMBLE 4000SSI
     Serial Number            : 3503A09374
     Firmware Version         : 7.29
     Date Installed           : 31-JUL-1999 14:00 UT
     Date Removed             :
     Additional Information   :


4.   GPS Antenna Information

4.1  Antenna Type             : TRM22020.00+GP
     Serial Number            : 0220008914
     Antenna Height (m)       : 0.055 m  (55 mm above bolt-survey mark)
     Antenna Reference Point  : ARP
     Degree Offset from North :
     Antenna Radome Type      : DOME
     Date Installed           : 27-MAY-1997 00:00 UT
     Date Removed             :
     Additional Information   : TRIMBLE 24490-00 Prod Ass Ext Dome


5.   Local Site Ties

5.x  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)            :
     Date Measured            :
     Additional Information   :


6.   Frequency Standard

6.1  Standard Type            : INTERNAL
       Frequency              :
       Effective Dates        : 27-MAY-1997 - now
       Notes                  :


7.   Collocation Information

7.1  Instrumentation Type     : PRARE
       Status                 : Permanent
       Effective Dates        : June 1997 - now
       Notes                  :

7.2  Instrumentation Type     : VLBI (mobile)
       Status                 :
       Effective Dates        : 1992
       Notes                  :


8.   Meteorological Instrumentation

8.1  Humidity Sensor Model    : not available
       Manufacturer           :
       Data Frequency         :
       Accuracy (% rel h)     :
       Effective Dates        :
       Notes                  :

8.2  Pressure Sensor Model    : not available
       Manufacturer           :
       Data Frequency         :
       Accuracy (mbar)        :
       Height Diff to GPS (m) :
       Effective Dates        :
       Notes                  :

8.3  Temperature Sensor Model : not available
       Manufacturer           :
       Data Frequency         :
       Accuracy (deg C)       :
       Effective Dates        :
       Notes                  :

8.4  Water Vapor Radiometer   : not available
       Manufacturer           :
       Distance to GPS (m)    :
       Elev Diff to GPS (m)   :
       Effective Dates        :
       Notes                  :

8.5  Other Instrumentation    :


9.   On-Site, Point of Contact Agency Information

     Agency                   : Landmaelingar Islands
                              : National Land Survey of Iceland
     Mailing Address          : Stillholti 14 - 16
                              : IS-300 Akranes
                              : Iceland
     Primary Contact
       Contact Name           : Christof Voelksen
       Telephone (primary)    : 00354-4309030
       Telephone (secondary)  :
       Fax                    : 00354-4309090
       E-mail                 : christof@lmi.is
       Contact Name           : Thorarinn Sigurdsson
       Telephone (primary)    : 00354-4309000
       Telephone (secondary)  :
       Fax                    : 00354-4309090
       E-mail                 : thorarinn@lmi.is
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Additional Information   :


10.  Responsible Agency (if different from 9.)

     Agency                   : Bundesamt fuer Kartographie
                              : und Geodaesie
                              : Fundamentalstation Wettzell
     Mailing Adress           : Bundesamt fuer Kartographie
                              : und Geodaesie
                              : Fundamentalstation Wettzell
                              : D-93444 Koetzting
                              : Germany
     Primary Contact
       Contact Name           : Dr. Wolfgang Schlueter
       Telephone (primary)    : (0049)-9941-603107
       Telephone (secondary)  : (0049)-9941-6030
       Fax                    : (0049)-9941-603222
       E-mail                 : schlueter@wettzell.ifag.de
       Contact Name           : Klaus Roettcher
       Telephone (primary)    : (0049)-9941-603115
       Telephone (secondary)  : (0049)-9941-6030
       Fax                    : (0049)-9941-603222
       E-mail                 : roettcher@.wettzell.ifag.de
       Contact Name           : Uwe Hessels
       Telephone (primary)    : (0049)-9941-603204
       Telephone (secondary)  : (0049)-9941-6030
       Fax                    : (0049)-9941-603222
       E-mail                 : hessels@wettzell.ifag.de
       Contact Name           : Rudi Stoeger
       Telephone (primary)    : (0049)-9941-603114
       Telephone (secondary)  : (0049)-9941-6030
       Fax                    : (0049)-9941-603222
       E-mail                 : stoeger@.wettzell.ifag.de
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Additional Information   :


11.  More Information

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



                     TRM22020.00+GP

                       ----+----                          <--  0.0625  L1/L2
                    /      +      \
++----------------+-----------------+-----------------++  <--  0.0591  TGP
++---------------+-------------------+----------------++  <--  0.0556  BGP
                 |                   |
                  |                 |
                   |               |
                    +------x------+                       <--  0.000   ARP=BPA

 <--                     0.467                      -->                NOTCHES
<--                      0.483                       -->               EDGE


   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