Journal of Geodesy
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Volume 77 ∙ Number 10-11 ∙ April 2004 Journal of 77 10-11 Geodesy International Association of Geodesy The International Union of Geodesy and Geophysics Geodesist’s Central Bureau Department of Geopgysics Handbook Juliane Maries vej 30 DK-2000 Copenhagen Oe Denmark Editor: 2004 Ole B. Andersen DOI 10.1007/s00190-003-0368-8 FOREWORD Ole B. Andersen (IAG Information Editor) Every four years, after every General Assembly, the The fifth part presents scientific and miscellaneous International Association of Geodesy publishes the information related to geodesy. The most recent listing of Geodesist’s Handbook as a special issue of the Journal of parameters of common relevance of astronomy, geodesy Geodesy. This is the 7th edition of this Geodesists hand- and geodynamics by E. Groten is found. Information on book describing the International Association of Geodesy. educational establishment, datacenters, national repre- sentatives, publications is also found in this final part This issue of the Geodesist Handbook describes the along with the IAG Directory listing of names and new structure of the IAG established prior to and at the addresses of persons related to the International Associ- IUGG XXXIII General Assembly in Sapporo, July, 2003. ation of Geodesy. The structuring of the Geodesist Handbook 2004 is I would like to thank all the individuals and institu- also changed compared with previous versions to reflect tions, who provided the information to be included in this the new structure of the IAG. Geodesist’s Handbook 2004 and took the time to send The first part describes the new IAG structure for the corrections or proof-read documents. period 2003–2007. It contains an introduction, history, the I would like to thank the IAG Central Bureau and IAG internet pages as well as and overview of the IUGG C. S. Pedersen as well as Andreas Lemark and Anders and IAG structure. Almholt for helping me out in the editing of the individual The second part contains the detailed description of contributions. the structure and organization of the International Asso- Most of the information contained in this volume is ciation of Geodesy for the 2003–2007 period. also available on the IAG Web pages The third part is a report of the XXXIIrd General Assembly, held in Sapporo in July, 2003. This part con- http://www.iag-aig.org tains the presidents address, Guy Bomford price and Here you will always find the most recent version of Levallois price acceptance, Meeting reports, Secretary the documents appearing in the Geodesists Handbook, as Generals report and resolutions adopted by the IUGG. well as other relevant information to geodesy. The fourth part describes the administration of the Corrections and updates to the Geodesist’s Handbook IAG and includes the new statutes and bylaws as adopted will be published in the IAG Newsletter, as part of the on the 8th August, 2001, as well and rules for the IAG. Journal of Geodesy. DOI 10.1007/s00190-003-0369-7 The New IAG Structure President of IAG: G. Beutler (Switzerland) Earth, the Earth’s gravity field, and the orientation of the Earth in space. – the new structure should (better) incorporate the very successful IAG services, among other by a represen- tation in the IAG Executive Committee. It is very interesting to look at the ‘‘new IAG’’ from the perspective of history. This was done by Beutler et al. (2004), also included in this Volume. 1 The road from Birmingham (1999) to Sapporo (2003) The new IAG structure was developed after the IUGG General Assembly in Birmingham in summer 1999. Between the summer 1999 and the summer 2001 a thor- ough review of the IAG work and structure was per- formed by the so-called IAG Review Committee, the work Gerhard Beutler of which is documented by Beutler et al. (2002). The list of Preamble authors of this document also is identical with the list of members of the IAG Review Committee. The Statutes and By-Laws of the Association, as they were accepted by the IAG Council at the IAG Scientific The report was presented to the IAG Scientific Assem- Assembly 2001 in Budapest, are included in this new edition bly in Budapest in September 2001 in Budapest. The pro- of the Geodesist’s Handbook 2004. Consequently, these posed new structure was accepted by the IAG Executive introductory remarks concerning the IAG Structure 2003– Committee and later on by the IAG Council, which held an 2007 are redundant, by definition. The only excuse to write extraordinary meeting on September 8,2001 in Budapest. these lines resides in the experience that many colleagues – At the same meeting Rummel et al. (2002) proposed to geodesists, surveyors and geophysicists – start yawning create the the Integrated Global Geodetic Observing Sys- when reading expressions like ‘‘Statutes’’ and ‘‘By-Laws’’. tem (IGGOS) as IAG’s first project. After the Budapest Scientific Assembly the IAG Review Committee was The author of this ‘‘Explanatory Supplement’’ hopes to abolished and the IAG Committee for the Realization of have extracted the essence of the new IAG in a less formal, the New IAG Structure was created. It was in essence but still informative way. As the full text of the Statutes and composed of the IAG Executive, augmented by few experts By-Laws is available in this Volume, it is allowed to mention from services and regions. The committee members were: only the more relevant elements and facts, subsequently. – Gerhard Beutler (IAG first Vice-President, Chair of The restructuring process 1999–2003 was deep and Committee) fundamental. The key elements were: – Fernando Sanso (IAG President) – Christian C. Tscherning (IAG Secretary General) – the new structure should have a focus – Alan Dodson (President Section I) – the new structure should be based on the three pillars – C.K. Shum (President Section II) of modern geodesy, namely the geometric shape of the – Michael G. Sideris (President Section III) 561 – Bernhard Heck (President Section IV) new structure elements. Let us briefly browse through – Klaus Peter Schwarz (Past President of IAG) these elements. We only include the general definitions – Ruth E. Neilan (Director IGS Central Bureau) and remarks. The Terms of Reference of the components – John Manning (Representative of Southern Hemisphere) for the time period 2003–2007 may be found in this Vol- ume, as well. The work of mapping the old structure into the new one, of creating the planning group for the Inter-commission Committee (ICC) on Theory, and of issuing the call for 2.1 Commissions proposals for the Outreach Branch was given to the IAG Committee for the Realization of the new IAG structure. Commission 1: Reference Frames It was decided furthermore that the creation of a planning (President: Hermann Drewes) group for the IAG Project called IGGOS (Integrated Global Geodetic Observing System) should be left to the The objectives of Commission 1 are: initiative of Reiner Rummel and Gerhard Beutler (see – The establishment, maintenance, improvement of the Beutler et al. 2004). The IAG Committee for the realiza- geodetic reference frames. tion of the new IAG structure held three meeting (on – Advanced terrestrial and space observation technique September 6, 2001 in Budapest, on December 11, 2001 in development for the above purposes. San Francisco, and on April 26, 2002 in Nice). – International collaboration for the definition and deployment of networks of terrestrially-based space geodetic observatories. 2 The essence of the new IAG Statutes and By-Laws – Theory and coordination of astrometric observation for reference frame purposes. The IAG statutes say: ‘‘The Mission of the Association – Collaboration with space geodesy/reference frame re- is the advancement of geodesy, an Earth science that in- lated international services, agencies and organizations. cludes the study of the planets and their satellites. The IAG implements its mission by advancing geodetic theory Commission 2: Gravity Field through research and teaching, by collecting, analyzing, (President: Chris Jekeli) and modeling observational data, by stimulating techno- logical development and by providing a consistent repre- The objectives of Commission 2 are: sentation of the figure, rotation, and gravity field of the Earth and planets and their temporal variations’’. – Terrestrial, marine, and airborne gravimetry. The mission statement is very broad by including our – Satellite gravity field observations. Moon, the planets of the solar system, and perhaps even – Gravity field modeling. satellites of other planets (than the Earth) into the sphere – Time-variable gravity field. of interests and activities of the Association. We will see – Geoid determination. below that this broad understanding is reflected by the – Satellite orbit modeling and determination. new structure. Commission 3: Earth Rotation and Geodynamics The Association’s objectives are stated in the IAG (President: Ve´ronique De´hant) Statutes, as well (please consult this document for more information). The scientific work of the Association is further specified in greater detail the new IAG By-Laws: The objectives of Commission 3 are: The scientific work of the Association shall be performed – Earth Orientation (Earth rotation, polar motion, within a component-structure consisting of: nutation and precession). – Earth tides. – Commissions – Tectonics and Crustal Deformation. – Services – Sea surface topography and sea level changes. – Inter-commission Committees – Planetary and lunar dynamics. – the Communication and Outreach Branch, and – Effects of the Earth’s fluid layers (e.g., post glacial – IAG Projects, rebound, loading). hereafter called the Association components or compo- nents. When comparing the previous with the new struc- Commission 4: Positioning and Applications ture we find that the Services are mentioned for the first (President: Chris Rizos) time as IAG components on the same level of the hier- archy as the Commissions. The new structure was sim- The objectives of Commission 4 are: plified insofar as the old ‘‘section-level’’ was abolished. – Terrestrial and satellite-based positioning systems The Communication and Outreach Branch, Inter- development, including sensor and information fusion.