TSKA Site Information Form
     International GPS Service for Geodynamics


0.   Form

     Prepared by (full name)  : IMAKIIRE Tetsuro
     Date Prepared            : 17-Nov-1998
     Report Type              : Update
     Prepared Using           :


1.   Site Identification of the GPS Monument

     Site Name                : Tsukuba A site
     Four Character ID        : TSKA
     Monument Inscription     : Stainless Steel Pillar
     IERS DOMES Number        : 21730M003
     CDP Number               : (none)
     Date Installed           : 17-JAN-1995
     Geologic Characteristic  : Medium Sand
       Bedrock Type           : sedimentary
       Bedrock Condition      :
       Fracture Spacing       :
       Notes                  : (multiple lines)
     Additional Information   : 10m concrete pile from ground surface


2.   Site Location Information

     City or Town             : Tsukuba
     State or Province        : Ibaraki
     Country                  : Japan
     Tectonic Plate           : North American
     Approximate Position
       X coordinate (m)       : -3957203.274 m
       Y coordinate (m)       :  3310203.162 m
       Z coordinate (m)       :  3737704.489 m
       Latitude (deg)         :  36.1056 N
       Longitude (deg)        : 140.0875 E
       Elevation (m)          :  67.31 m
     Additional Information   : ITRF96(at epoch 1997.0)


3.   GPS Receiver Information

3.1  Receiver Type            : Ashtech Z18
     Serial Number            : ZX00119
     Firmware Version         : 
     Date Installed           : 17-NOV-1998  05:00 UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : 


4.   GPS Antenna Information

4.1  Antenna Type             : Ashtech: 701073
     Serial Number            : CRG0116
     Antenna Height (m)       : 0.0
     Antenna Reference Point  : ARP
     Degree Offset from North :
     Antenna Radome Type      :spherical
     Date Installed           : 09-OCT-1998 05:00 UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)


5.   Local Site Ties

5.1  Monument Name            : Tsukuba Rogue Site
     Site Ref CDP Number      : 7311
     Site Ref Domes Number    : 21730S005
     Differential Components from GPS Mark to Site Reference (ITRS)
       dx (m)                 :  4.042
       dy (m)                 : -3.490
       dz (m)                 :  7.211
     Accuracy (mm)            : (mm)
     Date Measured            : 04-JUL-1998 hh:mm UT
     Additional Information   : (multiple lines)


6.   Frequency Standard

6.1  Standard Type            : CESIUM
       Frequency              : 5MHz
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)


7.   Collocation Information

7.1  Instrumentation Type     : VLBI
       Status                 : PERMANENT
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)


8.   Meteorological Instrumentation

8.1  Humidity Sensor Model    : none
       Manufacturer           :
       Data Frequency         :
       Accuracy (% rel h)     : (% rel h)
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)

8.2  Pressure Sensor Model    : none
       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 : none
       Manufacturer           :
       Data Frequency         :
       Accuracy (deg C)       : (deg C)
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)

8.4  Water Vapor Radiometer   : none
       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                   : Geographical Survey Institute
     Mailing Address          : Kitasato-1, Tsukuba-shi, Ibaraki-ken 305-0811
                              : JAPAN
     Primary Contact
       Contact Name           : IMAKIIRE Tetsuro
       Telephone (primary)    : 81-298-64-4825 
       Telephone (secondary)  : 81-298-64-1111(ex.8621)
       Fax                    : 81-298-64-6864
       E-mail                 : imq@gsi-mc.go.jp
     Secondary Contact
       Contact Name           : YAMADA Akiko
       Telephone (primary)    : 81-298-64-6266
       Telephone (secondary)  :81-298-64-1111(ex.8655)
       Fax                    : 81-298-64-6864
       E-mail                 : yamada@gsi-mc.go.jp
     Additional Information   : gps@geos.gsi-mc.go.jp


10.  Responsible Agency (if different from 9.)

     Agency                   : (multiple lines)
     Mailing Address          : (multiple lines)
     Primary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Additional Information   : (multiple lines)


11.  More Information

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


              Ashtech: 701073                             

  .                      .---.                      .     <--  0.140
                       /       \
 +                   /     +     \                   +    <--  0.128  L2
 .                  |      +      |                  .    <--  0.110  L1
 |+-------------------------------------------------+|    <--  0.101  TCR
 .|                                                 |.
 ||                                                 ||
 .|                                                 |.
 +|                                                 |+
+-+-------------------------------------------------+-+   <--  0.038
+-------------------+-------------+-------------------+   <--  0.035  BCR
                    |             | 
                   =|             |  
                    +------x------+                       <--  0.000  ARP

                    <--  0.120  -->                                   Preamp
  <--                    0.360                    -->                 Ch.Ring
 <--                     0.374                     -->                Dome
<--                      0.380                      -->               Gr.Plate




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

Structure of TSKA site: Stainless Steel Pillar

                     <----0.581m------>
                              A
                       ==============
               ------------------------------------        -----------2.000m
                      |                   |(
                      \                  /
                       |                 |
                        \                /
        |                |              |
        |                 \            /                  -----------1.600m
        |                 |           |
        |                 |           |
    steel pillar          |<-0.300m-->|
        |                 |           |
        |                 |           |
        |                 |           |
        |
        |                 |           |
        |                 |           |
        |                 |           |
        |                 |           |
        |                 |           |
        |ground surface   |           |
========|===============================================
        |       |         |           |        |
        |       |         |           |        |
        |       |         |           |        |
        |       |         |           |        |
        |       |         |           |        |
        |       |         |           |        |     --------- -0.800m
    ------------|----     |           |        |
                |         |           |        |
 concrete base  |         |           |        |
                |<----------1.500m------------>|
                |         |           |        |     --------- -1.400m
                ^^^^^^^^^~|           |^^^^^^^^^
                           |         |
                           |         |
                 
                           |<-0.35m->|
                           |         |
                           |         |
                           |         |
                            \       /
                             \     /
                              \   /
                               \ /
                                V                    --------- -10.800m