Journal of Geodesy (1999) 73: 105±107

IAG Newsletter O. B. Andersen IAG Central Bureau, Department of Geophysics, Juliane Maries vej 30, DK-2100 Copenhagen é, Denmark e-mail: [email protected]; Fax: +45 3536 5357; URL:http://www.gfy.ku.dk/iag/

The IAG Newsletter is under the editorial responsibility of the IAG Central Bureau. It is an open forum and contributors are welcome to send material (preferably in electronic form) to the IAG Central Bureau. These contributions should complement information sent by IAG ocials or by IAG symposia organizers (reports and announcements). Each IAG Newsletter includes several of the following topics: · · · ·

general information reports of IAG symposia reports by national correspondents reports by commissions, special commissions or study groups · symposia announcements · book reviews · fast bibliography General Information New IAG Representative to ISO The IAG has appointed Dr. J. Ihde (e-mail: [email protected]) as new representative to The International Organization for Standardization (ISO) ISO/ TC 211 (Geographic Information/Geomatics). Dr. J. Ihde is already active in the TC as a national representative. He is replacing Dr. C.Boucher. A written status report on ongoing activities in the ISO/TC 211 by Dr. Ihde can be found at the following Internet address: www.gfy.ku.dk/iag/isotcstatus.htm International Standards Organisation (ISO) TC211 (Geographic Information/Geomatics) plenary meeting will be held on 27±30 September, in Kyoto, Japan Books for review are the responsibility of: Prof. Martin Vermeer Finnish Geodetic Institute Geodeetinrinne 2, (PL 15) SF-02431 Masala Finland e-mail: Martin.Vermeer@fgi.®

Meeting information IUGG99, 18±30 July 1999, Birmingham The second and third circulars and call for abstracts are now available at http:/www.bham.ac.uk/IUGG99/. The online registration and accommodation form is available at http://www.motorcoach.co.uk/IUGG99/ 19th ISPRS Congress and Exhibition, 14 to 26 July 2000, RAI International Exhibition and Congress Centre Amsterdam, The Netherlands More information at the following Internet address: http://www.itc.nl/isprs Proposal for new IAG special study group (Section III) This special study group should be a time-limited twoyear working group, which would compile a gravity grid of the Arctic. IAG Special Working Group for the Arctic Gravity Project Chairman: R. Forsberg (Denmark) Co-chairman: S. Kenyon (USA) Objective The Special Working Group of the Arctic Gravity Project is a time-limited, dedicated e€ort to make a public-domain gravity grid model of the Arctic gravity ®eld north of 64 N. There is currently a great need to compile a uniform gravity grid of the Arctic region, for use in both geophysics/geology and geodesy/orbit determination. Recent advances in data collection technology, notably the advent of airborne gravimetry, the development of satellite altimetry over ice-covered regions, and availability of gravity data from scienti®c cruises with nuclear

106

submarines, have meant that a large part of the Arctic is already covered by substantial, accessible gravity ®eld information. This may provide a detailed insight into the tectonics of the region, allowing an accurate geoid model to be established for the ®rst time. Recent presentations make it clear that monumental e€orts have been made by Russia in mapping the gravity ®eld of the entire Arctic Ocean, which shows that the formation of the WG is timely. The establishment of a freely available uniform gravity grid of the Arctic follows ongoing activities to develop an Arctic bathymetric map and database under the auspices of the IHO. Program of activities It is proposed to make a 5' gravity grid available based on as much releasable gravity ®eld data as possible, within a two-year time frame. Representatives of all Arctic nations have joined the study group, along with other major research groups active in collecting gravity data for the region. Special studies will be undertaken on how to utilize bathymetry and ice thickness data for gravity grid compilation. The National Imagery and Mapping Agency, St. Louis,

USA, will serve as the computing center for the SWG's activities in validation, calibration and ®nal grid production of the gravity data obtained from the various sources. International Workshops will be held during the course of the project, to support the team e€ort. The ®nal gravity grids will be available on CD-ROM as well as through BGI and other data centers. List of members Georges Balmino (France), John Brozena (USA), Bernard J Coakley (USA), Gleb Demianov (Russia), Lars Ake Haller (Sweden), D. Bryne Hearty (Canada), Jussi Kaariainen (Finland), Seymour Laxon (UK), Uwe F. Meyer (Germany), Dag Solheim (Norway), Gunnar Thorbergsson (Iceland), Andrei Zaionchek (Russia) Meeting Calendar Please provide corrections and announcements directly to the IAG central bureau in order to keep this list up to date.

Year 1999 Date

Sponsor

9±11 March 15±18 March 15±17 March 19±23 April 31 May±4. June 21±24 June

28th June±2nd July 19±30 July

IAG

14±21 August

FIG

1±3 Sept 9±10 Sept

Name of Conference

Location

Info

Second EuroGOOS International Conference 30th Lunar and Planetary Science Conference Int. Conf on Geodesy and Surveying, The Importance of Heights 25th EGS General Assembly AGU Spring Meeting 4th International Airborne Remote Sensing Conference

Rome, Italy

http://www.imga.bo.cnr.it:80/eurogoos

Houston, Tex., U.S.A.

e-mail: [email protected];

GaÈvle, Sweden

http://www.lm.se/®g5/

@__ Den Haag, The Netherlands Boston, Mass., U.S.A. Ottawa, Ontario, CANADA

IGARSS'99 Remote Sensing of the System Earth IUGG 22 Gen Assembly 19th International Cartographic Conference and 11th ICA general assembly INTERGEO99, 83th GeodaÈtentag Int. Conf. Maritime Boundary Delineation and Delimitation Incl UNCLOS articles 76 (ABLOS )

Hamburg, Germany

www.copernicus.org/EGS/egsga/de nhaag99/denhaag99.htm Web Site: www.agu.org/meetings ERIM Airborne Conferences, Box 134008, Ann Arbor, MI 48113±4008 USA ; e-mail: [email protected]; Web Site: www.erim-int.com/CONF/conf.html Contact: Tammy Stein +1-281-251-6067

Birmingham, UK

http://www.bham.ac.uk/IUGG99/

Ottawa, Canada

Contact: fax +1 613 995 8737; e-mail [email protected]

Hannover, Germany

http://www.intergeo.de/

Monaco

IHB, e-mail: [email protected]

107 Year 1999 (Cont.) Date

Sponsor

25±28 Sept

27±30 Sept 27±30 Sept

18±22 Oct 25±27 Oct

IAG

13±17 Dec

Name of Conference

Location

Info

9th International Symposium on Deformation Measurements IAU Coll 178 - Polar Motion History and Scienti®c Problems Int. Standards Org. (ISO) TC211 (Geographic Information/Geomatics) plenary meeting GPS 99 TOPEX/POSEIDONJason SWT AGU Fall Meeting

Olsztyn, Poland

Home page: http://kosmos.art.olsztyn.pl/®g/9

Sardinia, Italy

IAU Coll 178 homepage

Kyoto, Japan

Contact: [email protected]

Tsukuba, Japan Saint Raphael, France

GPS 99 homepage Contact: Yves Menard +33 5 61 27 48 72

San Francisco, Calif., U.S.A.

Web Site: www.agu.org

Year 2000 Date

Sponsor

3±7 April

30 May±3 June 27±30 June 14±26 July 31 Jul±4 Aug

IAG

28 Aug±1. Sep

IAG

15±19 Dec

Name of Conference

Location

Info

Millennium Conf on Earth, Planetary and Solar System Sciences, 25th EGS Assembly AGU Spring Meeting 2000 Western Paci®c Geophysics Meeting 19th ISPRS Congress and Exhibition Int. Symp. on Gravity, Geoid and Geodynamics 2000 14th International Symposium on Earth Tides AGU Fall Meeting

Florence, Italy

http://www.copernicus.org/EGS/egsga/futurega.htm

Washington, USA Tokyo, Japan

Web Site: http:www.agu.org/meetings Web Site: www.agu.org

Amsterdam, The Netherlands Ban€, Canada

http://www.itc.nl/isprs

Mizusawa, Japan

http://www.ucalgary.ca/sideris/GGG2000 Conv Prof. Dr. Michael G. Sideris, e-mail: [email protected] http://www.gfy.ku.dk/iag/earth_tide2000.tx

San Francisco, Calif, USA

http: www.agu.org