[IGSMAIL-0460] IERS and IGS WORKSHOP

Martine Martine
Mon Jan 24 08:46:31 PST 1994


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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: feissel at iap.fr                   Internet: ren at logos.jpl.nasa.gov

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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
--------------------------------------------------------------------------------
                                                                          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
--------------------------------------------------------------------------------
                                                                          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		altamimi at ign.fr			o	o
	Felicitas Arias		24810::"felicita at onba.mil.ar"	o	
	Boudewijn Ambrosius	Boudewijn.Ambrosius at lr.tudelft.nl	o	o
	Gerhard Beutler		beutler at aiub.unibe.ch		o	o
	Yehuda Bock		bock at pgga.ucsd.edu		o	o
	Serge Botton 		botton at uranus.ign.fr		o	o
	Claude Boucher		boucher at ign.fr			o	o
	Denise Bourquard	bihcat at iap.fr			o	o
	Elmar Brockmann		brockmann at aiub.unibe.ch		o	o
	Peter Brosche						o	o
	Nicole Capitaine	capitaine at iap.fr		o	o
	William Carter						o	o
	Patrick Charlot		charlot at iap.fr			o	o
	Thomas Clark		clark at tomcat.gsfc.nasa.gov	o	o
	Veronique Dehant	veroniq at astro.oma.be		o	o
	Albert B. Demichev	411378 GOST SU (telex)		o	o
	Galina Dick 		dick at gfz-potsdam.de		o	o
	Jean Dickey		jod at logos.jpl.nasa.gov		o	o
	Steve Dinardo		sjd at logos.jpl.nasa.gov			o
	John M. Dow		jdow at esoc.bitnet		o	o
	Maurice Dube		dube at cddis.gsfc.nasa.gov	o	o
	Jean-Philippe Dufour	dufour at ign.fr			o	o
	Richard Eanes		eanes at csr.utexas.edu		o	o
	Etienne Eisop		eisop at iap.fr			o	o
	Najat Essaifi		iers at iap.fr			o	o
	Martine Feissel		feissel@ iap.fr			o	o
	Mariusz Figurski	mf at orion.gik.pw.edu.pl		o	o
	Andrej Finkelstein	iparan at sovam.com		o	o
	Henry Fliegel						o	o
	Jeffrey T. Freymueller	jeff at pangea.standford.edu		o
	Roman Galas		dick at gfz-potsdam.de		o	o
	Daniel Gambis		gambis at iap.fr			o	o
	Gerd Gendt 		gend at gfz-potsdam.de		o	o
	Richard Gross		rsg at logos.jpl.nasa.gov		o	o
	Erwin Groten 		Erwingroten at ipg0.ipg.
                                    verm.th-darmstadt.de	o	o
	Bernard Guinot						o	
	Werner Gurtner		gurtner at aiub.unibe.ch		o	o
	Ruediger Haas		haas at kuestner.geod.uni-bonn.de	o	o
	Heinz Habrich		habrich at igs.ifag.de		o	o
	Michael Heflin		mbh at cobra.jpl.nasa		o	o
	Jan Hefty		hefty at cvt.stuba.sk		o	o
	Thomas Herring		tah at prey.mit.edu		o	o
	Chris Jacobs		csj at logos.jpl.nasa.gov		o	o
	Wenjing Jin 		bmasao at ica.beijing.canet.cn	o	o
	Yakam Juompan						o	o
	Martin Kalafut		kalafut at cvt.stuba.sk		o	o
	Teruyuki Kato		eru at eri.u-tokyo.ac.jp		o	o
	Ambrus Kenyeres		fejes at rmk530.rmki.kfki.hu	o	o
	Barbara Kolaczek	cbkpan at pieart.bitnet		o	o
	Jan Kouba		kouba at geod.emr.ca		o	o
	Jean Kovalevsky		kovalevsky at mfg.cnes.fr		o	
--------------------------------------------------------------------------------
                                                                          page 6
	Oddgeir Kristiansen	oddgeir at gdiv.statkart.no	o	o
	Lech Kujawa						o	o
	Christian Le Provost	clp at img.fr			o	o
	Michel Lefebvre		grgs at frmop11.bitnet		o	o
	Zheng Xin Li						o	o
	Chopo Ma		cma at gemini.gsfc.nasa.gov	o	o
	Dennis D. McCarthy	dmc at maia.usno.navy.mil		o	o
	Leos Mervart		k152mer at fsv.cvut.cz		o	o
	Tomas J. Martin Mur	tmur at esoc.bitnet		o	o
	Horst Montag 		montag at gfz-potsdam.de		o	o
	Ivan I Mueller		mueller at mps.ohio-state.edu	o	o
	Horst Mueller		ham at dgfi2.dgfi.badw-muenchen.de	o	o
	Ruth Neilan		ren at logos.jpl.nasa.gov		o	o
	Arthur Niell		aen at bashful.haystack.edu	o	o
	Carey E. Noll		noll at cddis.gsfc.nasa.gov	o	o
	Axel Nothnagel		nothnagel at uni-bonn.de		o	o
	Matti Paunonen		geodeet at csc.fi			o	o
	Erricos Pavlis		zcecp at gibbs.gsfc.nasa.gov	o	o
	Mieczyslaw Piraszewski	mp at orion.gik.pw.edu.pl		o	o
	Angelo Poma		40588::POMA        (span) 	o	o
	William H. Prescott	wprescott at isdmnl.wr.usgs.gov	o	o
	Eduardo Proverbio	vaxca2::proverbio		o	o
	Jim Ray			jimr at ray.grdl.noaa.gov		o	o
	Jerzy Regowski						o	o
	Bernd Richter						o	o
	Christoph Reigber 	reigber at gfz-potsdam.de		o	o
	Markus Rothacher	rothacher at aiub.unibe.ch		o	o
	David A. Salstein	salstein at aer.com		o	o
	Valery Salyamov		maouas at gluk.apc.org		o	o
	Hans-Georg Scherneck	hgs at oden.oso.chalmers.se	o	o
	Bob Schutz		schutz at utcsr.ae.utexas.edu	o	o
	Kenneth Seidelmann	omd at ariel.usno.navy.mil		o	o
	Jaroslav Simek		vugtk at csearn.bitnet		o	o
	Leonid A.Sinenko	eopdelta at imvp.msk.su		o	o
	Janusz Sledzinski	gikigmp at coi.pw.edu.pl		o	o
	Waltraud Sommerfeld 	gend at gfz-potsdam.de		o	o
	Jean Souchay		souchay at iap.fr			o	o
	Tim Springer		tim at dutlru.tudelft.nl		o	o
	Alan Steppe		as at logos.jpl.nasa.gov		o	o
	Vladimir Tarady 	geodyn at gao.kiev.ua		o	o
	Suriya Tatevian		statevian at airas.msk.su		o	o
	Volkmar Thorandt	thorandt at v2.igag.de		o	
	Paolo Tomasi		tomasi at boira6.bo.cnr.it		o	o
	Pierre Uhrich							o
	Jos Verheijen		josla at tudgw2.tudelft.nl		o	
	Jan Vondrak 		vondrak at seis.ig.cas.cz		o	o
	Janusz Walo		walus at orion.gik.pw.edu.pl	o	o
	Lambert Wanninger	wanninger at cdc2.erdmessung.
				  bauwesen.uni-hannover.d400.de		o
	Rene Warnant 		rene at astro.oma.be			o
	Robert Weber		weber at aiub.unibe.ch		o	o
	Art Whipple 		alw at astro.as.utexas.edu		o	
	Pascal Willis 		willis at ign.fr			o	o
	Clark Wilson		clarkw at maestro.geo.utexas.edu	o	o
	Philip Woodworth	plw at unixa.nerc-bidston.ac.uk	o	o
	Yaroslav Yatskiv	maouas at gluk.apc.org		o	o
--------------------------------------------------------------------------------
                                                                          page 7


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


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