Subject: [IGSMAIL-0460] IERS and IGS WORKSHOP
From: Martine Feissel
Date: Mon, 24 Jan 1994 8:46:31 PST

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IGS Electronic Mail      Mon Jan 24  8:46:31 PST 1994      Message Number 0460
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Author: Martine Feissel 
Subject: IERS and IGS WORKSHOP

====================================              ==========================
INTERNATIONAL EARTH ROTATION SERVICE               INTERNATIONAL GPS SERVICE
SERVICE INTERNATIONAL                                    FOR GEODYNAMICS
DE LA ROTATION TERRESTRE                                          
====================================               =========================

                          1994 IERS and IGS WORKSHOPS
                    Paris and Saint Mande, 1994 March 21-25

                              SECOND CIRCULAR
                                January 1994

	This circular is the last one sent in preparation for the IERS and IGS 
Workshops. It contains all necessary information to participants.

	The enclosed draft program lists the addresses of meetings, 
Observatoire de Paris (Mon-Tue), CNES Headquarters (Wed), and IGN (Thu-Fri).

         CNES	o Metro Halles (Sortie "Porte Pont Neuf")
             	!
             	!                          Metro         Metro 
             	!                          Nation    St Mande-Tourelles
 Metro Chatelet	o----------------------------o------------o...IGN
             	!                            !      (Sortie "Prevoyance/
             	!                            !              R du Parc")
             	!                            !
       Obs.    	!                            !
     de Paris	o----------------------------!
             Metro Denfert-Rochereau

	Each session is under the responsability of a convenor, to whom 
proposed contributions should be directed by 1994 February 20. The 
convenors decide on the final status of the contributions - oral or posted.

	Hotel accomodation forms are attached. Please fill in and send back 
to the appropriate address (Paris Observatory or IGN) as early as possible if 
you want to get help from the local organisers. The rooms will cost 
approximately 300-400 FF. Late reservation may result in higher prices.

    Martine Feissel                            Ruth Neilan
    IERS/CB                            	       IGS/CB
    Observatoire de Paris              	       JPL MS 238-540
    61 Avenue de l'Observatoire                4800 Oak Grove Drive
    75014 Paris                                Pasadena, California 91109

    FAX: (33)-1-43-25-55-42                    FAX: (1) 818-393-6686
    Internet: [email-masked]                   Internet: [email-masked]

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                                                                          page 2
                            Draft program (January 1994)

                                 IERS WORKSHOP
                                 -------------

Monday 21 March
---------------
IAP theatre, Paris Observatory, 77 Av. Denfert-Rochereau, 75014 Paris
Metro: Denfert-Rochereau

14:00 - 15:30  IERS Standards: 	
               Precession-Nutation, atmospheric loading, 
	       atmospheric tides, gravity field
                                                           Convenor: D. McCarthy

16:00 - 17:30  	IERS Celestial Reference System
                                                              Convenor: F. Arias

Tuesday 22 March
----------------
IAP theatre, Paris Observatory, 77 Av. Denfert-Rochereau, 75014 Paris
Metro: Denfert-Rochereau

 9:00 - 10:30   Combination of EOP series
                Reset of the IERS EOP and Reference frames: discussion
                                                            Convenor: M. Feissel

11:00 - 12:00   Atmosphere 
                                                           Convenor: D. Salstein

12:00 - 12:30   Poster presentation (all subjects)
                                                             Convenor: D. Gambis

14:00 - 15:00   Poster viewing (Rm B0, open 9:00-18:00, 21-22 March)
                                                             Contact: N. Essaifi

15:00 - 15:30  	DORIS results for terrestrial frame and Earth rotation
                                                             Convenor: B. Schutz

16:00 - 17:30  ITRF: how to improve the estimation of ITRF coordinates 
	       at various epochs?
                                                            Convenor: C. Boucher

                              IERS/DB MEETINGS
                              ----------------

Monday 21 March, 	at Paris Observatory, 10:00 - 12:30	Rm B124

Thursday 24 March, 	at IGN, 16:30 - 19:00	Salle Cassini
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                                                                          page 3

                         COMMON IERS - IGS SESSIONS
                         --------------------------

Wednesday 23 March
------------------
Salle de l'Espace, CNES Headquarters, 2 Place Maurice Quentin, 75001 Paris
Metro: Halles (sortie "Porte Pont Neuf")

 9:00 -  9:30  Presentation of the IERS and the IGS
                                             Convenors: M. Feissel and R. Neilan

 9:30 - 10:30  Introduction to the densification of ITRF with regional GPS 
               networks through the IGS (see presentation p. 4).
                                           Convenors: G. Blewitt and Z. Altamimi

11:00 - 12:30  Reference systems, Altimetry, and Orbitography for Oceanography
                                                          Convenor: B. Melbourne

14:00 - 14:30  Sea level monitoring
                                                             Convenor: B. Carter

14:30 - 15:30  Space Oceanography: tidal models, assimilation of altimetry 
               data in hydrodynamical models
                                                         Convenor: C. Le Provost

16:00 - 17:30  Geophysical environment and the IERS Standards:
	       diurnal EOP variations, ocean loading,
               post-glacial rebound, radiation pressure
                                                           Convenor: D. McCarthy

18:00	Reception

                                 IGS WORKSHOP
                                 ------------

Thursday 24 March
-----------------
Rm  Robert Genot, Institut Geographique National, 2 Av. Pasteur, Saint Mande
Metro: Saint Mande-Tourelles (sortie "Place de la Prevoyance/Rue du Parc")

 9:00 - 10:30  IGS analysis center reports and orbit combination
                                                 Convenors: J. Kouba/J. Zumberge

11:00 - 11:30  Poster session introduction
                                                                Convenor: J. Dow

11:30 - 12:30  Use of IGS products & the IGS CB information system
                                                           Convenor:  W. Gurtner

14:00 - 15:30  Regional processing: technical aspects and practical 
               approaches for the extension and densification of the ITRF 
                                        Convenors: G. Blewitt, Y. Bock, G. Gendt

16:00 - 17:00  Poster Viewing
                                                            Contact: Z. Altamimi
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                                                                          page 4

Friday 25 March
---------------
Rm  Robert Genot, Institut Geographique National, 2 Av.  Pasteur, Saint Mande
Metro: Saint Mande-Tourelles (sortie "Place de la Prevoyance/Rue du Parc")

 9:00 - 10:30  IGS network operations: stations and operational data flow
                                              Convenor: U. Lindqwister/G. Preiss

11:00 - 12:30  IGS data center aspects: global and regional data handling and 
               product availibility
                                                 Convenor: L. Daniel/ H. Habrich

14:00 - 15:30  IGS Governing board general meeting (Open) 

16:00 - 17:30  (Salle Cassini) IGS Executive business session 

20:00          Dinner

                        REGIONAL GPS PROCESSING AND THE 
         DENSIFICATION OF THE INTERNATIONAL TERRESTRIAL REFERENCE FRAME

   When the IGS was conceived, one of the stated goals was the densification of 
the International Terrestrial Reference Frame using the GPS technique. Many of 
you  recall the days when GPS networks or stations were observed by different 
agencies and institutions, with no easy way to establish a meaningful 
comparison of results between groups.  Everyone used a different reference 
system with different stations and coordinates as a basis for processing. The 
IGS has been very successful in working with the IERS to resolve this problem 
and together we have made great progress in the evolution of the ITRF. After 
the establishment of an accurate and highly reliable GPS orbit and EOP service 
the densification of the core network must be the next major goal of the IGS.

   During the IERS/IGS Workshop to be hosted by the IERS in Paris during the 
week of March 21 -25, this concept will be discussed and developed in two 
stimulating sessions. Wednesday March 23 will provide an overview and 
introduction, and Thursday March 24 will include a session devoted to 
discussing the technical details and practical approach. The basic idea is to
involve a few stations observed from  permanently operating regional networks 
or even from episodic measurements into the IGS on an annual or semi-annual 
basis. In this manner those stations can be tied into the IERS/IGS.

   Technically this may be established in different ways: IGS Analysis Centers 
may be asked to include certain stations into their processing for an annual 
solution; and regional agencies and institutions must be encouraged to use the 
precise combined IGS orbits to process their data, subsequently submiting  
certain key station solutions to the IGS. Methods to combine the results of 
the different [Associate] Analysis Centers must be studied. For networks of 
about 30 to 40 GPS stations with worldwide distribution, very reliable GPS 
coordinates and velocities are available.  Now we must focus on the 
densification of the network.
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                                                                          page 5

                     LIST OF PREREGISTRERED PARTICIPANTS
                     -----------------------------------

	      Name	           internet address                  IERS   IGS

	Zuheir Altamimi		[email-masked]			o	o
	Felicitas Arias		24810::"[email-masked]"	o	
	Boudewijn Ambrosius	[email-masked]	o	o
	Gerhard Beutler		[email-masked]		o	o
	Yehuda Bock		[email-masked]		o	o
	Serge Botton 		[email-masked]		o	o
	Claude Boucher		[email-masked]			o	o
	Denise Bourquard	[email-masked]			o	o
	Elmar Brockmann		[email-masked]		o	o
	Peter Brosche						o	o
	Nicole Capitaine	[email-masked]		o	o
	William Carter						o	o
	Patrick Charlot		[email-masked]			o	o
	Thomas Clark		[email-masked]	o	o
	Veronique Dehant	[email-masked]		o	o
	Albert B. Demichev	411378 GOST SU (telex)		o	o
	Galina Dick 		[email-masked]		o	o
	Jean Dickey		[email-masked]		o	o
	Steve Dinardo		[email-masked]			o
	John M. Dow		[email-masked]		o	o
	Maurice Dube		[email-masked]	o	o
	Jean-Philippe Dufour	[email-masked]			o	o
	Richard Eanes		[email-masked]		o	o
	Etienne Eisop		[email-masked]			o	o
	Najat Essaifi		[email-masked]			o	o
	Martine Feissel		feissel@ iap.fr			o	o
	Mariusz Figurski	[email-masked]		o	o
	Andrej Finkelstein	[email-masked]		o	o
	Henry Fliegel						o	o
	Jeffrey T. Freymueller	[email-masked]		o
	Roman Galas		[email-masked]		o	o
	Daniel Gambis		[email-masked]			o	o
	Gerd Gendt 		[email-masked]		o	o
	Richard Gross		[email-masked]		o	o
	Erwin Groten 		[email-masked].
                                    verm.th-darmstadt.de	o	o
	Bernard Guinot						o	
	Werner Gurtner		[email-masked]		o	o
	Ruediger Haas		[email-masked]	o	o
	Heinz Habrich		[email-masked]		o	o
	Michael Heflin		[email-masked]		o	o
	Jan Hefty		[email-masked]		o	o
	Thomas Herring		[email-masked]		o	o
	Chris Jacobs		[email-masked]		o	o
	Wenjing Jin 		[email-masked]	o	o
	Yakam Juompan						o	o
	Martin Kalafut		[email-masked]		o	o
	Teruyuki Kato		[email-masked]		o	o
	Ambrus Kenyeres		[email-masked]	o	o
	Barbara Kolaczek	[email-masked]		o	o
	Jan Kouba		[email-masked]		o	o
	Jean Kovalevsky		[email-masked]		o	
--------------------------------------------------------------------------------
                                                                          page 6
	Oddgeir Kristiansen	[email-masked]	o	o
	Lech Kujawa						o	o
	Christian Le Provost	[email-masked]			o	o
	Michel Lefebvre		[email-masked]		o	o
	Zheng Xin Li						o	o
	Chopo Ma		[email-masked]	o	o
	Dennis D. McCarthy	[email-masked]		o	o
	Leos Mervart		[email-masked]		o	o
	Tomas J. Martin Mur	[email-masked]		o	o
	Horst Montag 		[email-masked]		o	o
	Ivan I Mueller		[email-masked]	o	o
	Horst Mueller		[email-masked]	o	o
	Ruth Neilan		[email-masked]		o	o
	Arthur Niell		[email-masked]	o	o
	Carey E. Noll		[email-masked]	o	o
	Axel Nothnagel		[email-masked]		o	o
	Matti Paunonen		[email-masked]			o	o
	Erricos Pavlis		[email-masked]	o	o
	Mieczyslaw Piraszewski	[email-masked]		o	o
	Angelo Poma		40588::POMA        (span) 	o	o
	William H. Prescott	[email-masked]	o	o
	Eduardo Proverbio	vaxca2::proverbio		o	o
	Jim Ray			[email-masked]		o	o
	Jerzy Regowski						o	o
	Bernd Richter						o	o
	Christoph Reigber 	[email-masked]		o	o
	Markus Rothacher	[email-masked]		o	o
	David A. Salstein	[email-masked]		o	o
	Valery Salyamov		[email-masked]		o	o
	Hans-Georg Scherneck	[email-masked]	o	o
	Bob Schutz		[email-masked]	o	o
	Kenneth Seidelmann	[email-masked]		o	o
	Jaroslav Simek		[email-masked]		o	o
	Leonid A.Sinenko	[email-masked]		o	o
	Janusz Sledzinski	[email-masked]		o	o
	Waltraud Sommerfeld 	[email-masked]		o	o
	Jean Souchay		[email-masked]			o	o
	Tim Springer		[email-masked]		o	o
	Alan Steppe		[email-masked]		o	o
	Vladimir Tarady 	[email-masked]		o	o
	Suriya Tatevian		[email-masked]		o	o
	Volkmar Thorandt	[email-masked]		o	
	Paolo Tomasi		[email-masked]		o	o
	Pierre Uhrich							o
	Jos Verheijen		[email-masked]		o	
	Jan Vondrak 		[email-masked]		o	o
	Janusz Walo		[email-masked]	o	o
	Lambert Wanninger	[email-masked].
				  bauwesen.uni-hannover.d400.de		o
	Rene Warnant 		[email-masked]			o
	Robert Weber		[email-masked]		o	o
	Art Whipple 		[email-masked]		o	
	Pascal Willis 		[email-masked]			o	o
	Clark Wilson		[email-masked]	o	o
	Philip Woodworth	[email-masked]	o	o
	Yaroslav Yatskiv	[email-masked]		o	o
--------------------------------------------------------------------------------
                                                                          page 7

                           1994 IERS and IGS WORKSHOPS
                    Paris and Saint Mande, 1994 March 21-25

                            Hotel registration form
                        Send back before 1994 February 5

	Name:					Fax:
		                             e-mail:
	Address:

	Arrival date:			approx. time:
	Departure date:			approx. time:

	Prefered: Single/double	     bath/shower
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	Near Paris Observatory		[  ]

	Send to

	Mrs Claude Mulhauser			FAX: 33 1 43 25 55 42
	Observatoire de Paris		     e-mail: [email-masked]
	61 Avenue de l'OBservatoire
	75014 Paris, France
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	Near Institut Geographique National	[  ]

	Send to

	Serge Botton				FAX: 33 1 43.98.84.88.
	Institut Geographique National	     e-mail: [email-masked]
	BP 68
	2 Avenue Pasteur
	94160 Saint Mande
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