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	Gazette IERS Gazette IERS Gazette IERS Gazette IERS Gazette 
                                      _____________________________________
	No 38, 04 January, 1999      /
____________________________________/                Contact: iers@obspm.fr
                                     ftp:  hpiers.obspm.fr (145.238.100.28)
                              WWW:  http://hpiers.obspm.fr
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      Title:  Call for participation to ITRS Time series pilote experiment
     Author:  Claude BOUCHER

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             *                                            *
             *    CALL FOR PARTICIPATION TO ITRS TIME     *
             *                                            *
             *          SERIES PILOTE EXPERIMENT          *
             *                                            *
             **********************************************

IERS has decided to perform a pilot experiment for time series of station 
coordinates/EOP. We therefore ask the interested groups to submit their 
proposal as:

1. analysis center submitting such a series: these centers should submit 
   data as regularly as possible.

2. combination centers: these centers should compute a time series of 
   ITRS from the submitted data and with the use of the local ties for 
   ITRF computation.

NOTE: Since IGS weekly SINEX submission are already suitable and already
available, no specific responseis required for IGS Analysis Centers (point 1).

The full description of both the experiment and the recommendations are 
available at:

              http://lareg.ensg.ign.fr/ITRSTS/appeldoffre.html
              
Claude Boucher             

For any question, please ask Patrick Sillard (sillard@ensg.ign.fr).

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