GUAM Site Information Form
     International GPS Service for Geodynamics


0.   Form

     Prepared by (full name)  : David A. Stowers
     Date Prepared            : 18-AUG-1999
     Report Type              : UPDATE
     Prepared Using           : vi


1.   Site Identification of the GPS Monument

     Site Name                : USGS Guam Observatory
     Four Character ID        : GUAM
     Monument Inscription     : GUMO 1992 Lamont-Doherty Earth Observatory
     IERS DOMES Number        : 50501M002
     CDP Number               : None
     Date Installed           : 01-JAN-1992 hh:mm UT
     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   : Existing monument installed on roof of
                              : Observatory  was chosen due to logistical
                              : reasons, and to get the site installed
                              : quickly, with the trade off being higher
                              : than normal multipath.


2.   Site Location Information

     City or Town             : Dededo
     State or Province        :
     Country                  : Guam
     Tectonic Plate           : Pacific
     Approximate Position
       X coordinate (m)       : -5071312.7999
       Y coordinate (m)       : 3568363.4847
       Z coordinate (m)       : 1488904.3108
       Latitude (deg)         : 13.5893
       Longitude (deg)        : 144.8683
       Elevation (m)          : 201.922
     Additional Information   : Receiver position 1/20/95


3.   GPS Receiver Information

3.1  Receiver Type            : ROGUE SNR-8000
     Serial Number            : T360
     Firmware Version         : 3.0 -1994/10/10   17:01:54
     Date Installed           : 20-JAN-1995 hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)

3.2  Receiver Type            : ROGUE SNR-8000
     Serial Number            : T332
     Firmware Version         : 3.2
     Date Installed           : 01-AUG-1995 hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)

3.3  Receiver Type            : ROGUE SNR-8000
     Serial Number            : T397
     Firmware Version         : 3.2.32.4
     Date Installed           : 10-DEC-1996 hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)

3.4  Receiver Type            : ROGUE SNR-8000
     Serial Number            : T397
     Firmware Version         : 3.2.32.8
     Date Installed           : 20-MAY-1999 hh:mm UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)

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             : AOAD/M_T        JPLA
     Serial Number            : 481
     Antenna Height (m)       : 0.0614
     Antenna Reference Point  : ARP
     Degree Offset from North :
     Antenna Radome Type      : JPL design
     Date Installed           : 20-JAN-1995 hh:mm UT
     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            : (H-MASER/CESIUM/QUARTZ/INTERNAL/RUBIDIUM)
       Frequency              :
       Effective Dates        : (dd-MMM-yyyy - 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)
       Other (specify)        : IRIS
                              : Doris/IDA station nearby ( 5 Km ) at
                              : Mt. Santa Rosa Station


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                   : United States Department of the Interior
     Mailing Address          : United States Geological Survey
                              : Guam Seismic Observatory
                              : P.O. Box 8001, MOU #3
                              : Dededo , Guam - 96912-8001
       Shipping               : United States Department of the Interior
                              : Guam Seismic Observatory
                              : Potts Junction
                              : Dededo, Guam  96912-8001
     Primary Contact
       Contact Name           : Dr. Paul Hattori
       Telephone (primary)    : 671-355-5259
       Telephone (secondary)  :
       Fax                    : 671-637-8286
       E-mail                 : paul@kventos.guam.net
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Additional Information   : (multiple lines)


10.  Responsible Agency (if different from 9.)

     Agency                   : JPL
     Mailing Address          : 4800 Oak Grove Dr.
                              : Pasadena, CA 91109 USA
     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           : Network Engineer/UNAVCO
       Telephone (primary)    : 303-497-8000
       Telephone (secondary)  :
       Fax                    : 303-497-8028
       E-mail                 : ruud or kfeaux @unavco.ucar.edu
     Additional Information   : Oivind Ruud (x8030) or Karl Feaux (x8037)


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


             TURBOROGUE: DORNE MARGOLIN T

                         -----
                     /     +     \                        <--  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