Bulletin G6od6sique

Bulletin G6od6sique (1995) 69:109-122

© Springer-Verlag1995

IAG Newsletter Pascal Willis IAG Central Bureau, 2, Avenue Pasteur, BP 68, F-94160 Saint-Mand6, France

This part of the Bulletin G6od6sique is under the editorial responsibility of the IAG Central Bureau chaired by the IAG General Secretary. It will include, in each issue, several topics : • Informations. . Reports of IAG symposia. • Reports by National Correspondents. • Reports from IAG Special Study Group. . Symposia announcements. • Book reviews. • Fast bibliography.

Informations In Memoriam Georges Laclav~re (1906 - 1994)

It is the intent of the IAG to extend the services provided by its Central Bureau. An up-to-date information medium is one of the key elements. The IAG Newsletter, included as appendix of the Bulletin G6od6sique, should play this role, and therefore considered as an open forum. Contributors are welcomed to send any information or document which may be of interest for this purpose. This should complement the informations already sent by the IAG officials or the IAG symposia organizers (reports and anouncements). Books to be reviewed are under the responsibility of : Prof. Gtinter W. HEIN Institute of Geodesy and Navigation (lIEN) University FAF Munich D-85577 Neubiberg Germany

Georges Laclav~re died in Paris on 26 September 1994 at the age of 88. A few days before he was still presiding over a small technical home meeting when he was suddenly struck by a concussion he could not recover from. Born in Nice on 28 June 1906, he graduated from the "Ecole Polytechnique" (a French institution specializing in high-level engineering) in 1929 and then served as officer in the French army. After a short period in Western Africa where he participated in the Dakar-

110 Niger railway construction, he joined the "Service Grographique de l'Arm~e" (the French Military Survey Department) later on converted into the "Institut Grographique National" (IGN) and then started a long scientific career in astronomy, geodesy, geophysics and cartography. Already outstanding was Georges LaclavSre's capacity for learning and assimilating all these technologies and contributing largely to their development. He started this career as field geodesist, in France and Morocco, then taught geodesy at the IGN's "Ecole Nationale des Sciences Grographiques" (the French National Survey Sciences College) and lectured, both in French and English, on geodesy, geophysics, and cartography in many places all over the world. In collaboration with Pierre Tardi he wrote the famous "Trait6 de G&~drsie" which became a reference in the French geodetic literature. Besides his large scientific culture Georges LaclavSre proved a talented organizer and an accomplished negotiator. Since the end of the second world war he acted as intermediary between IGN and the allied geodetic and cartographic authorities and, in 1963, he was appointed IGN Director General. All along the decade spent at the head of this establishment he did his utmost to keep up its high scientific level, modernize its production tools in every technical field, set up a real commercial activity and establish cooperation links with French or foreign organizations operating within the same scope. And that is how in 1971, after a study and some recommendations from a number of French scientists, among whom J. Coulomb, J. Kovalevsky and JJ. LevaUois, was created the "Groupe de Recherche de Grodrsie Spatiale - G.R.G.S." - (the Research Group on Space Geodesy) between the "Centre National d'Etudes Spatiales - CNES" - (the French Space Agency), the "Bureau des Longitudes", Paris Observatory and IGN. It was and still is a remarkable tool for space geodesy development in France. Likewise, and again with CNES, was created in 1973 the "Groupement pour le Drveloppement de la T616drtection Spatiale - G.D.T.A." - (the French Aerospace Remote Sensing Development Organization). Georges Laclav&e had also the opportunity to put his scientist's, organizer's and negotiatior's talents at the service of various national and international scientific institutions. In France he was more particularly member of the "Bureau des Longitudes", of the "Conseil National de la Recherche Scientifique - CNRS" - (the French National Council for Scientific Research), of UNESCO National Commission, he presided over the "Comit6 National Fran~ais des Recherches Antarctiques" (the French National Committee on Antarctic Research) the "Comit6 National Franfais de Grodrsie et de Grophysique - CNFGG" - (the French National Committee on Geodesy and Geophysics), the "Socirt6 des Explorateurs" (the Explorers' Society). On the international scene he engaged into numerous activities

and held successively such positions as Assistant Secretary of the International Association of Geodesy (IAG) in 1946, then Secretary General of the International Union of Geodesy and Geophysics (IUGG) from 1951 to 1963 ; in 1953 he became a most active member of the International Geophysical Year Special Committee (1956-1957) and then presided over the Publication Commission of this Geophysical Year. Since then he showed a real passion for international publications : he presided over the IUGG Publication Committee for many years and published the IUGG Chronicle from 1957 to 1990 (203 numbers published and distributed through his care). In 1957 he was elected President of the International Committee on Antarctic Research and, in 1959, member of the International Council of Scientific Unions Board. He played also an important part, as Secretary from 1956 to 1963, within the Federation of Astronomical and Geophysical Services (FAGS). To end with, as President of the CNFGG, he organized in a masterly manner, in Grenoble (France), the XVIth IUGG General Assembly in 1975. It was the first time this Assembly was held in France : it resulted an incomparable success. Such a talent, such an overflowing energy were also acknowledged by many official distinctions, French ones such as the "Croix de Guerre" (the Military Cross), the "Mrdaille de la Rrsistance" (the Resistance Medal) and the Cross of Officer of the Legion of Honour, and also foreign ones among which the King's Medal of Courage, the Citation for the Legion of Merit and the Bronze Star, for his intelligence activities, little known, during the second world war. He was also member of many foreign scientific Universities and Academies. The International Association of Geodesy is particularly grateful to him for having decided to maintain its Central Bureau within IGN premises and provided all support required. ERRATUM In Charles Whitten's obituary published in the last IAG Newsletter a misprint occured. We send our apologies to Charles Whitten's family and to the readers. Here is the corrected paragraph:

Whitten Charles Arthur (1909-1994) In addition to the Bowie Medal awarded in 1980, the American Geophysical Union bestowed an almost unprecedented honor on Charles Whitten in 1985 by creating a medal named after him "for outstanding achievement inresearch on the form and dynamics of the Earth and planets".

111

Albania

lAG Directory The IAG Directory is currently composed, on january 15, 1995, of the following categories : Fellows Associates Candidate Associates Others

19 0 1128 479 35

Total entries

18 3 2

According to the IAG Statutes and By-Laws (as published every 4 years in the Geodesist's Handbook),: the ~

are past IAG Officers;

the IAG Associates (or Affiliates) are those who participate in the IAG bodies and those who have fulfilled the conditions to become IAG Associates and who have expressed their willingness to become Associates; the IAG Candidate Associates are those who have fulfilled the conditions to become IAG Associates but who have not yet expressed their willingness to become Associates (if you are still in this category, please contact the IAG Central Bureau), listed in the IAG Directory are Presidents and Secretary General of Sisters Associations.

2

Algeria 9 Mr. K. Bouchibi (NC A) Argentina I0 Dr. Ezequiel Pallej~ (NC A) Australia 37 Prof. Richard Coleman (NC A) Austria 42 Prof. Dr. Hans Sfinkel (EC O F NC) Belgium 18 Prof.Dr.Ir, Urbain Van Twembeke (NC A) Bolivia 6 Dr. Reynaldo Oroz (NC CA) Brazil

15 Prof. Denisar Blitzkow (NC A)

Bulgaria 8 Prof. N. Georgiev (NC CA) Burundi

2 Directeur G6n6ral (NC CA)

Canada 8 5 Prof. Richard B. Langley (NC EC O A) Chile

7 Dr. Jos6 Pinto (NC CA)

The IAG Directory is also available on INTERNET through the IAG Informationation Service (IAGIS). This Service is offered free of charge to any IAG Fellow or Associate. For more information, please contact the IAG Central Bureau ([email protected]). For each country represented in this IAG Directory (97 in total), we have here listed: - the total number of IAG Fellows, Associates and Candidate Associates,

China Colombia

I

Costa Rica

I

Croatia 6 Prof.Kresimir Colic (NC A) Cuba

- the name of the IAG National Correspondent (if any) with his IAG status, using the following abbreviations: A CA EC F NC 0

= Associate, = Candidate Associate, = Executive Committee, = Fellow, = National Correspondent, = Officer.

I Lic.Juan Perez Hernandez (NC CA)

Czech Rep. 23 Dr. PetrHolota (EC O F NC) Denmark 19 Dr. Frede Madsen (NC A) Ecuador Egypt

Countries who do not have any IAG Correspondent are usually countries who do not have yet any IUGG representation.

69 Prof.Jianguo Hu (NC A)

2

12 Prof. All Abd El Azim Tealeb (NC A)

Estonia Dr. Ants Torim (NC A)

5

112 Ethiopia 2 Dr. Laike Marian Asfaw (NC A)

Kenya

Fed. Rep. of Germany 216 Prof. Dr.-Ing. Erik W. Grafarend (O F NC)

Korea

Finland 16 Prof.Dr. Johani Kakkuri (O F NC)

Latvia

5

Lebanon Dr. C. Massad (NC CA)

1

Libya

3

France

79 Dr. Martine Feissel (EC O F NC)

Georgia

Greece

14 Prof. Georges Veis (F NC)

9 Prof. Eun-Kee Baick (NC CA)

Dr. Muftah Unis (NC A)

3

Great Britain 63 Prof. Paul A, Cross (F NC)

14

Dr. J.D. Obel (F NC )

Lithuania

3

Luxembourg 3 Ing. Germain Breger (NC A)

Guatemala Dr. R.G. Carrera (NC A)

3

Madagascar 3 Mr. Herilalao Iarivo Nary (NC A)

Haiti

1

Malaysia 9 Mr. Mohamed Abdul Majid (NC A)

Hungary 29 Prof. Jozsef Adam (O NC A)

Mexico 3 Dr. J. Monges Caldera (NC CA)

Iceland 3 Dr. Aghst Gudmundsson (NC A)

Monaco 3 (no correspondentappointed)

India

12 Mr. Vinay Kant Nagar (NC A)

Indonesia 13 Mr. Klaas J. Villanueva (NC CA) Iran

6 Dr. M. Najafi Almandari (NC CA)

Iraq

3

New Zealand 11 Dr. Donald Grant (NC A)

Israel

8 (no correspondentappointed)

Italy

58 Prof. Carlo Morelli (F NC)

Japan

Myanmar 1 Director of Survey Department (NC A) Netherlands 4 7 Prof.Dr.Ir. Peter J.G. Teunissen (EC O F NC)

Dr. R.A. Kirwan (NC A)

Ivory Coast Dr. J. Abla (F NC)

Mozambique 3 Mr. Simeao Velemo Cambaco (NC A)

1 Dr. N. Tawfiq (NC CA)

Ireland

Morocco 6 Mr. Lahsen Tikdirine (NC A)

3 69

Nicaragua

1

Nigeria 13 Dr. Oluwole Coker (F NC) Norway 22 Dr. Bjoin Geirr Harsson (NC A) Pakistan 3 Mr. Nastratullah (NC A)

Prof. Jiro Segawa (A NC) Jordan

8 Eng. Saliem Khalifeh (NC A)

Panama

2

Peru

3

113 Tunisia Philippines 7 Commodore Renato Feir (NC A) Turkey

Poland

31

6 Pr6sident Directeur Gdndral OTC (NC CA)

14 Lt. Col. Eng. Dogan Ozaydin (NC A)

Prof. Bogdan Ney (NC A) Ukraine

Portugal 13 Dr. Joao Agria Torres (NC A) Rep. of Ghana

1

United Arab Emirates

USA

Romania 6 Gen. It. Vasile Dragomir (NC CA)

Uzbekhistan

52 Prof. Mikhail T. Prilepin (EC O F NC)

Salvador

1

Saudi Arabia 9 Dr. S. Robayshi (NC CA) Senegal 1 Mr. S.M. Thiam (NC CA) Serbia

3

Siovakia

7

Slovenia

1

South Africa 8 Mr. Richard Wonnacott (NC A) Spain Sudan

23 Prof. Miguel J. Sevilla (F NC) 5 Mr. Mohammed Bakhiet (NC CA)

Sweden 32 Dr. Clas-GOran Persson (NC A)

Switzerland Dr. Beat Bfirki (NC A) Syria

36

3 Ing. A. Kadri (NC CA)

Taiwan

6

Tanzania Dr. E.N. Njau (NC CA)

7

Thailand 12 Lt. Gen. Paew Paewpisakun (NC CA)

1

Uruguay 4 Cor. Y.A. Sequeira (NC CA)

Rep. of Guinea 1 Mr. Bambo Fofana (NC A)

Russia

4

332 Prof. Bob E. Schutz (EC O F NC) 1

Venezuela 2 Prof. Heinz Henneberg (F NC) Vietnam 1 Dr. Nguyen Manh Duc (NC CA) Zimbabwe 4 Dr. Francis Podmore (NC A)

Imoortant Notice: We remind here the few LAGNational Correspondents who are still listed as Candidate Associate that they urgentely need to contact the IAG Central Bureau in order to be eligeable to vote within the IAG council held during the next IUGG Boulder General Assembly.

Update to the Geodesist's Handbook IAG National Correspondent for Guinea: Mr. Bambo Fofana Dia~t~ur G~n~ml Institut de Topographie et de Cartographie (ITCG) BP 4485 Conakry Rep. de Guin6e IAG National Correspondent for Jordan: Eng. Saliem Khalifeh Director General Royal Jordanian Geographic Centre PO Box 414 A1 Jbeihah Jordan Ph.: (962)-845188 Tx.: 22472 JO IAG National Correspondent for Malaysia: Mr. Mohamed Abdul Majid Dept. of Survey and National Mapping, Bangunan Ukur, Jalan Semarak, 50578 Kuala Lumpur

114 Malaysia Ph.: (3)-292-5311 or 292-5932 Fx.: (3)-291-7457 or 293-4084 IAG National Correspondent for Switzerland: Dr. Beat Bfirki Institut for Geoditsie&Photogrammetrie Federal Institute of Technology ETH-HOnggerberg CH-8093 Ztirich Switzerland Ph.: (41)-1-377-2644 Fx.: (41)-1-371-2593 Tx.: 823 480 EHEB CH Em.: [email protected]

Symposia announcements EUREF MEETING (Helsinki, Finland, 1995) First Circular General Topics : The following topics are foreseen as a preliminary agenda: -rules/guidelines for the EUREF permanent network, -preparation of a European Primary Tide Gauge Network (ETPN), -status of the UELN95 readjustment and enlargement, - EUREF status, -validation of quality and reliability of results (single campaigns and their possible combination). Participation fees : 5 0 $ Further information can be obtained from : Dipl.Ing. Erich Gubler EUREF President Budensamt for Landestopographie Seftigenslrasse 264 CH-3084 Wabern Switzerland Phone: (41)-31-963-2233 Fax: (41)-31-963-2459 Dipl.Ing. Helmut Hornik EUREF Secretary Deutsche Geod/atische Kommission Marstallplaz 8 D-80539 Mtinchen Fed. Rep. of Germany Phone: (49)-89-23-031-113 Fax: (49)-89-23-031-240 E-mail: [email protected]

THIRD INTERNATIONAL SEMINAR GPS IN CENTRAL EUROPE (Penc, Hungary, May 9-11, 1995) First Circular General Topic: Invited and contributed papers will be presented on the following topics : -Geodetic GPS reference networks (EUREF, national networks), - Geodynamie investigations (IGS, CERGOP, local networks), - Permanent stations (role and perspectives), - GPS measuring and analysis techniques. Organizing Committee: Dr. Tibor Borza, Ambrus Kenyeres, Agnes Simon FOMI Satellite Geodetic Observatory H-1373 Budapest, PO Box 546 Hungary Ph.: (36)-27-310-980 Fx.: (36)-27-310-982 Em.: KEN@ NOVELL.S GO.FOMI.HU Deadlines for submitting papers: 15 May 1995 Participations fee: 110 USD XXI th GENERAL ASSEMBLY OF THE INTERNATIONAL UNION OF GEODESY AND GEOPHYSICS (Boulder, USA, July 2-14, 1994) 3rd circular Joint Snonsored Svmnosia led bv IAG Crustal Deformation Along Plate Boundaries (lAG, IASPEI). Convenor: J-B Minster, (IAG/IASPEI) Scripps Institute of Oceanography, University of Calif. at San Diego, Inst. of Geophysics & Planetary Sci., La JoUa, CA 92093, 619-534-5650 tel.; 619-534-2902 FAX; [email protected]. General Topics: Over the past two decades, space geodesy has come of age, and has evolved from an experimental discipline to one of the most important tools available to scientists interested in active tectonics. It now permits detailed measurements of tectonic motions over spatial and temporal scales never before accessible to Earth scientists. With the ubiquitous accessibility of inexpensive techniques such as the Global Positioning System (GPS) and with the deployment and operation of precise global international geodetic networks and of dense regional permanent networks, the short-term kinematics of plate boundary deformation zones on

115 continents where the rigid plate paradigm is inadequate can now be elucidated in a global reference frame, and compared with long-term geological interpretations. This opens new exciting possibilities for a new, improved understanding of the geomechanics of this regions. This interdisciplinary symposium invites papers dealing with the geodetic aspects of the problem, including descriptions of novel techniques and special network deployments; with the geophysical aspects, specifically the seismic and volcanic cycles; and with the geodynamical aspects, including in particular rheological and dynamical models of the lithosphere and asthenosphere, as well as fault zone mechanics. Papers dealing with applications of such studies to the characterization and mitigation of natural disasters are especially welcome.

Geodetic, Remote Sensing and Seismic Methods for Monitoring of Volcanic Activities (IAG, IASPEI, IAVCEI). Convenors: C. Reigber(IAG), GeoForschungsZentrum (GRZ), Dept. of Kinematics and Dynamics of the Earth, Telegrafenberg A17, D-14473 Potsdam, Germany, 49331-288-1100 or 1114 tel.; 49-331-288-1111 FAX; REIGBER@ GFZ-POTSDAM.DBP.DE; A. Hasegawa, (IASPEI)., Observation Center for Earthquake Prediction, Tohoku University, Aoba-ku. Sendai-shi 980, Japan; tel.: 81 22 223 7087; FAX 81 22 264 3292; A. Linde (IAVCEI), Dept. of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, N.W. Washington, D. C. 20015; tel 202 6864370 x 4394; FAX 202-364-8726; E-mail: [email protected] General Topics In order to study the volcano-mantle dynamics and volcano climate connections, the monitoring and analysis of both lava-producing and explosive volcanic eruptions and deposits produced by volcanoes are essential. Terrestrial and space geodetic methods, seismic, as well as aircraft and satellite remote sensing techniques are essential tools to colect data for monitoring and analysis and for the development of early warning systems. Within its three sessions, the symposium will concentrate on instrumental and analytical methodologies which help to obtain better understanding of process before, during and following volcanic eruptions and are used or proposed for volcano monitoring, volcanic eruption prediction, and early warning systems. Terrestrial and space geodetic techniques for monitoring horizontal and vertical displacements (laser distance measurements, gravity-meter, tiltmeter, GPS, DORIS and PRARE space observations) will be covered in Session 1. Airborne and satellite remote sensing

methods for acquiring high resolution multi-spectral images and the use of radar interferometry from the ERS-1/2 SAR sensors for mapping small scale topographic changes due to the growth of volcanic domes or the intrusion of magma at shallow depth will be dealt with in Session 2. Seismic methodologies, aiming at revealing the characteristics and origin of volcanic tremors as well as relationship to volcanic activity and major eruptions will be discussed in Session 3. Automatic event recording, 3-component sesimometry, broad band seismometry, and special array techniques are considered to be topics of discussions for this session.

Earth Rotation: An Interdisciplinary Approach to Earth System Science (IAG, IAMAS, IAPSO, IASPEI, IAGA, IAHS, SEDI). Convenors: M. Feissel (IAG), Observatoire de Paris, Central Bureau, Int'l Earth Rotation Service, 61, Avenue d'Observatoire, F-75014 Paris, France, 33-1-4051-2226 tel.; 33-1-40-51-22-91 FAX; [email protected]; D. Cartwright (IAPSO), 3 Borough House, Petersfield Hampshire, GU32 3LF; Great Britain, 44730-267195 tel; 44-428-683066 FAX; [email protected]; R. Hide (lAMAS, IAGA, SEDI), University of Oxford, Clarendon Lab., Dept. of Physics, c/o NERC Unit, Oceanography Group, Room 1, The Observatory, Parks Road, Oxford OX 1 3PU, England, U,K., 44-865272901 tel; 44-865-272923 FAX; R. Sabadini (IASPEI), Universita Degli Studi di Bologna, Settore di Geofisica, Viale Berti Pichat 8, 40127 Bologna, Italy, 39-51-243586 tel; 39-51-250106 FAX; J. Wahr (IAHS), University of Colorado, Physics Dept., Boulder, CO 80309, 303-492-8349 tel; 303-4923352 FAX. General Topics: The modem approach to understanding Earth rotation irregularities deals with interacting physical constituents as diverse as a liquid, magnetic core, a visco-elastic mantle, and liquid and gaseous external layers, each with internal motions and responding to external forces. The global character of the observational evidence is a major challenge to theoreticians who develop dynamical model of the behavior of each layer. No single theory can explain the complete set of observed irregularities. The monitoring of Earth rotation itself includes the participation of worldwide space geodetic and astronomical programs, leading to intensive international cooperation. The symposium will focus on those aspects of Earth rotation studies that imply, or even create, bridges between scientific disciplines.

116

GPS Trends in Precise Terrestrial, Airborne, and Spaceborne Applications (IAG). Convenors: G. Beutler, Astronomical Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland, 4131-631-8596 tel.; 41-31-631-3869 FAX; [email protected]; G. Hein, Universitat der Bundeswehr Mnchen, Institut fr Geodasie, Werner-Heisenberg-Weg 39, D8014, Neubiberg, Germany, 49-89-6004-3435 tel; 4989-6004-3560 FAX; [email protected]; W. Melbourne, Jet Propulsion Laboratory, 4800 Oak Grove Drive, MS 238-540, Pasadena, CA 91109; 818-354-5071 tel; 818-393-6686 FAX; G. Seeber, Universitat Hannover, Institut fur Erdmessung, Nienburger Strasse 6, D-3000, Hannover, Germany; 49-511-7622475 tel; 49-522-762-4006 FAX. General Topics This symposium should reflect the state of the art for all kinds of scientific and engineering applications using the now fully operational Global Positioning System (GPS). It is jointly organized by the IAG and the International Union of Surveying and Mappings 0USM) working group on GPS. The symposium is structured as follows: Session 1: The International GPS Service for Geodynamics (IGS) and other continuously operating GPS reference networks: their impact on geosciences and engineering. Chairpersons: G. Seeber/L. Hothem. Session 2: Spaceborne Applications of the GPS. Chairpersons: W, G. Melboume/J. M. Dow. Session 3: Kinematic Applications of the GPS. Chairpersons: G. Hein/B. Remondi. Session 4: The GPS and its relations to geophysics and the other space techniques (such as troposphere, ionosphere, and time transfer). Chairpersons: G. Beutler/Ch. Roecken. Geodesy in Southeast Asia (IAG). Convenors: J. Rals, National Agency for Survey & Mapping, Bakosurtanal, Jalan Raya-Bogor Km 46, PO Box 3546/JK, RI-Cibinong, Indonesia, 62-21-8073067 tel; 62-21-8072064 FAX; J. Manning, University of Canberra, PO Box 1, Belconnen ACT 2616, Australia, 61-6-201-4352 tel; 61-6-201-4366 FAX. General Topics The Symposium objectives are to focus attention on geodetic activity in the Southeast Asian Region research, development and applications promote an exchange of information on geodetic activity within the region, promote national, regional and international

dialogue; encourage global and regional collaboration among academic institutions, researchers, governments and practitioners on current and future geodetic activity pertaining to the region; and to present and discuss recent scientific results of interest to the region. Discussion Topics include: High precision techniques applied to geodesy and geodynamics, Absolute gravity, Regional geoids, National geodetic reference frames and networks, Global reference frames - implications for SE Asia, Sea level monitoring, Marine geodesy, Other regional projects

Global Gravity Field Variations (IAG).

and

Its

Temporal

Convenors: R. H. Rapp, Dept. of Geodetic Science, Ohio State University, 1958, Neil Ave., Columbus, OH 43210, 614-292-6005 tel.; 614-292-2957 FAX; RHRAPP@OHSTMVSA; A. Cazenave, CNES-GRGS, 18 Ave Eduoard Belin, 31055 Toulouse Codex, France; 33-61-332922 tel; 3361-253205 FAX; [email protected]; R. S. Nerem, NASA, Goddard Space Flight Center, Code 926, Greenbelt, MD 20771, 301-286-3220 tel; 202-328-0566 FAX; SNEREM@ SANTAFE.GSFC. NASA.GOV. General Topics New satellite and combination models and methods. Gravity information from altimeter observations and surface gravity measurements. Improved representation procedures. Geoid undulation accuracy. Role of GPS tracking data. Future global gravity field mapping missions. Factors limiting accuracy of global models. Role of topography. Temporal changes from satellite and terrestrial (e.g. absolute gravity) measurements. Geophysical inferences of global gravity models and their time variation. Airborne Gravity Field Determination (IAG). Convenors: K.-P. Schwarz, University of Calgary, Dept. of Surveying Engineering, Calgary, Alberta T2N 1N4, Canada, 403-220-7377 tel.; 403-284-1980 FAX; [email protected]; J. Brozena, Naval Research Laboratory, Code 7420, 4555 Overlook Ave SW, Washington, DC 20375-5350, 202-767-3013 tel; 202-767-0167 FAX; JOHN@ HP8C.NRL.NAVY.M]L; G. Hein, Universitat der Bundeswehr Miinchen, Institut far Geod~isie, Werner-Heisenberg-Weg 39, D8014, Neubiberg, Germany, 49-89-6004-3435 tel; 4989-6004-3560 FAX; [email protected].

117

General Topics: The Symposium will address topics of current interest in airborne gravimetry in the following three session: Session 1: System Concepts and Critical Design Parameters Session 2: Error Models and Filter Design Session 3: Application Areas, System Tests, and Results Each session will have a length of 1 1/2 hours and will consist of presented and poster papers. Authors are asked to indicate their preference.

Convenors: M. Prilepin, Soviet Geophysical Committee, Molodezhnaya 3, SU-117296 Moscow GSP-1, Russia; 7-095-130-0546 tel.; 7-095-930-5509 FAX; [email protected].; Y. Bock, IGPP A-025, Scripps Institute of Oceanography, University of California, San Diego, La Jolla, CA 92093, 619-534-5292 tel; 619-534-9823 FAX; [email protected]; J. Kakkuri, Finnish Geod.edu; J. Kakkuri, Finnish Geodetic Institute, Ilmalankatu 1A, Helsinki SF 00240, Finland, 358-0-41033 tel; 358-0-414946 FAX.

Abstracts: Abstracts in the prescribed format are to be sent to the Organizing Committee in care of the American Geophysical Union with a copy to the main convenor, K. P. Schwarz.

General Topics: Forum to discuss the application of geodetic networks for a variety of geophysical investigations. Areas of particular interest include: (1) campaign-type and continuously operating geodetic networks for the study of plate motion, plate boundary crustal deformation, and earthquake and volcanic hazards, (2) collocation of geodetic sensors within existing geophysical networks, (3) geodetic networks for sea level monitoring, glaciology, subsidence and other vertical motion applications, (4) sensing of atmospheric water vapor with continuous geodetic networks. Results and conceptual papers are especially solicited.

The Geoid and the Solution of the Boundary Value Problem (IAG). Convenors: B. Heck, Universitat Karlsruhe, Geodatisches Institut, Englerstrasse 7, PO Box 6980, D-76128 Karlsruhe, Federal Republic of Germany, 49-721-(3083674 tel.; 49-721-694-552 FAX; GO04@DKUNI2; R. Forsberg, Kort-og Matrikelstyrelsen, Geodetic Division, Rentemestervej 8, DK-2400 Copenhagen NV, Denmark, 45-3587-5319 tel; 45-3587-5052 FAX; [email protected]; H. S(inkel, Technische Universitat Graz, Dept. of Geodesy and Geoinformatics, Steyrergasse 30, A-8010 Graz, Austria, 43-316-873-6346 tel; 43-316-813-247 FAX; [email protected]. General Topics: The need for highly precise, high-resolution determination of the geoid/quasi-geoid has strongly increased in recent years, due to the impact of GPSleveling and geophysical/oceanographic demands. This challenge affects nearly any theoretical and practical aspects of the geodetic boundary value problem (GBVP), forming the conceptual basis of geoid/quasigeoid determination. The symposium will focus on: progress in theory of the GBVP on the basis of terrestrial, airborne and space gravity field observations, including overdetermined problems, the role of topography and the use of isostatic models in the framework of the GBVP, modern numerical solution techniques, including spectral approach and finite element/boundary element methods, complementary aspects such as downward continuation and regularization. Geodetic Networks for Geophysical Issues (IAG).

Addressing

New Concepts in Space Geodesy (IAG), Convenors: P. L. Bender, University of Colorado, JILA, Box 440, Boulder, CO 80309-0440, 303-492-6793 tel.; 303492-5235 FAX; [email protected]; F. Nouel, CNES/GRGS, 18 Avenue Edouard Belin, F-31055 Toulouse Cedex, France, GRGS@FRMOP11

03rrt~a3; C. Reigber, GeoForschungsZentrum (GRZ), Dept. of Kinematics and Dynamics of the Earth, Telegrafenberg A17, D-14473 Potsdam, Germany, 49331-288-1100 or 1114 tel.; 49-331-288-1111 FAX; REIGBER@ GFZ-POTSDAM.DBP.DE; R. Rummel, Technische Universitat Mnchen, Inst. of Astro. & Phys. Geodesy, Arcisstrasse 21, D-80290, Mnchen, Germany, 49-89-21053190 tel; 49-8921053178 FAX.

General Topics: The subject of the Symposium is new techniques or proposed missions for space geodesy which are either under development or have been suggested recently or realized recently. Thus, the topics range from recently launched experiments such as TOPEX]POSEIDON, ERS-1, STELLA, LAGEOS-2 to planned missions such as GFZ-1, ERS-2, ARTISTOTELES, STEP or even GP-B or LISA. Both experience with space borne GPS, DORIS or PRARE should be exchanged as well as ideas on future technology concerning tracking, static

118 or dynamic positioning, attitude, or microaccelerometry. The aim is to provide a total picture of where geodetic space technology currently stands and what the trends most likely will be. Thus, also theorists will discover what problems can and must be addressed in the near future. Scientific Meetines bv the lAG Sections

The IAG Sections will organize their own business and scientific meetings, following the terms of reference published in the Geodesist's Handbook 1992 Section I: Positioning Convenor: M. Prilepin General Topics: Continental networks; integrated geodesy; inertial systems; optical interferometry; sea-floor positioning; vertical reference systems; rapid precise levelling; static Global Positioning System; kinematic Global Positioning System; wet propagation delay. Within Section I, Commission X, Continental Networks (K. Poder) will organize a meeting on SIRGAS (South American Geocentric Reference System Project), jointly with the Pan-American Institute of Geography and History (PAIGH).

Special Commission SC4 Applications of Geodesy and Engineering (K. Linkwitz) will organize a joint sessions with the IUSM Working Group on Automated Control Measurement (H.Haggren). Section II: Advanced Space Techniques Convenor: C. Reigber General Topics: International coordination of space techniques for geodesy and geodynamics; Wegener project; gravity field determination by satellite gravity-gradiometry; application of space VLBI in the field of astrometry and geodynamics; non-gravitational force modelling effects on satellite orbits; Spaceborne GPS/GLONASS; timevarying gravitational effects on satellite orbits; altimetry: optimal processing for geodesy, geophysics and oceanography. Section IIl: Determination Field Convenor: H. G. Wenzel

of the Gravity

General Topics: International gravity commission; international geoid commission; techniques of precise gravimetry; airborne gravimetry; optimization of spectral gravity field modelling methods; high resolution geoid modelling and evaluation; combined use of gravimetry and stress-strain measurement techniques. Sessions will be arranged as follows: Oral Session 1: Business session, Convertor. Hans-Georg Wenzel

Keywords: Report of Section President, Presidents of Commissions, Special Study Groups, International Gravity Bureau, International Geoid Service. Oral Session 2: Gravimetry Convenor. Iginio Marson Keywords: Absolute and relative terrestrial gravity measurements, gravity networks and control stations, non-tidal gravity variations, Oral session 3: Geoid Determination, Convenor: Hans S~inkel Keywords: global, regional and local geoid dete~t-~-hnations from gravimetry, gradiometry, satellite altimetry, geodetic astronomy, satellite altimetry, GPS. Poster session 4: common for both oral sessions 2 and 3. Convenor: Rene Forsberg The scientific sessions 2 and 3 will provide a forum for those presentations which do not fit into a Union, Inter-Association or an IAG Symposium. Section IV: General Theory and Methodology Convenor: F. Sansb General Topics: Mathematical and physical foundations of geodesy; modelling and quality control for precise integrated navigation; the role of terrain gravity field modelling; tomography of the atmosphere by geodetic measurements; integrated inverse gravity modelling; applications of the boundary value problem techniques to space and airborne gravity field. Section V: Geodynamics Convenors: J. Dickey, M. Feissel, H. Hsu, T. Tanaka General Topics: Reference systems, Monitoring and study of time-dependent phenomena, such as polar motion*, geocentric motion, Earth tides, recent crustal movements*, variations of gravity*, seasurface topography including mean-sea level, Geodetic aspects of international geodynamics projects, such as the Lithosphere projects*, Geophysical interpretation of gravity* and related data. Papers are solicited in these areas with special emphasis being placed on areas related to current Special Study Groups and Commission: Earth tides; recent crustal movements*, fundamental constants, rapid Earth orientation variations*, long-term variations in Earth rotation*, geocentric motion, global geodynamical variation*, processing of optical polar motion data, studies of the Baltic Sea, studies of vertical datums*, density distribution within the lithosphere*, and geodetic research toward the reduction of natural hazards.

*Indicates areas where there are Union, Jointly Sponsored or IAG Symposia; authors, depending on the scope of their paper, may want to submit abstracts to these symposia.

119

IAG Commission IX: Education Convenor: R. Langley and R. Hoisl R. Langley will organize a joint session with IUSM Working Group on Education. Joint Session of IAG Commission IX Education in Geodesy and the International Union for Surveys and Mapping Working Group on Education (duration : 1/2 day) Convenors : Richard B. Langley, Department of Geodesy and Geomatics Engineering, University of New Brunswick, P.O Box 4400, Fredericton, N.B, Canada E3B 5A3, Phone : +1 506 453 4698, Fax : + 1 506 453 4943, E.mail : [email protected] Richard Hoisl, Lehrstuhl fiir Bodenordnung und Landentwicklung, Technische Universit~t Miinchen, 80290 Mtincben, Germany, Phone : +49 89 2105 2535, Fax : +49 89 2105 3933, E.mail : BODENORDNUNG @LBL.VERM.TU-MUENCHEN.D400.DE General Topics: The joint session will consist of two 1-1/2 hour sessions. The following topics have been scheduled Presentation of the IUSM Position Paper on Education Invited papers of the commissions on education of the member societies of IUSM on the status and perspectives of their work Outlook on the future of education in surveying and mapping (.panel discussion by representatives of the commissions on education)

ISPRS - IAG - FIG W O R K S H O P ON INTEGRATED SENSOR ORIENTATION: THEORY, A L G O R I T H M S AND SYSTEMS (Barcelona, Spain, September 4-8, 1995) First announcement General Topics: The goal of this workshop is to bring together experts from geodesy, surveying, photogrammetry and remote sen~ing to discuss the problem of sensor orientation. Also, because of the complexities of designing and integrating software systems for the purposes of data capture and analysis, there will be a session on modern software engineering techniques with some relevant personalities of the computer science area

The workshop will be structured as follows: - 10 ordinary sessions, 5 highlight lectures, - 2 keynote addresses, - a "Birds of a feather" session and - the opening and closing ceremonies. Lectures will focus on: -Reports on the state-of-the-art (operational concepts, current research topics).

- A survey / classification of existing sensors, under-development sensors and future sensors. - The theory for the integration of different sensor systems. - Algorithms for sensor orientation and integration. - On-line and off-line algorithms. - System's design. Deadline invited.

for abstracts: None. All papers are

Registration fees :

Payment before June 30: Payment after June 30:

30000 pta 45000 pta

Further information can be obtained from :

Jose Navarro Secretary of ISPRS WG III/1 Institut Cartografic de Catahnya Balmes 209 SP-08006 Barcelona Phone: +34 3 218 87 58 Fax: +34 3 218 89 59 E-mail: [email protected] [email protected] NEW TRENDS IN L O W - F R E Q U E N C Y GEODYNAMICS ( C a s t l e of S m o l e n i c e , West Slovakia, October 2-6 , 1995) First Circular General Topics :

The aim of the meeting is to present the new results in geodynamics problems. Original contributions dealing with the following topics are welcomed • -long-period dynamics of the lithosphere and mantle and its response in stress, gravity and geothermal fields, - tectonophysics (plate boundary processes), - tidal observations and solid erath'ss response to the tidal forcing, - deformations due to the changes of the rotation of the Earth. Further information can be obtained from :

Dr. Ladislav Brimich Geophysical Institute of the Solvak Academy of Sciences DObmvsk/l cesta 9 842 28 Bratislava Slovak Republic Phone: (42)-7-378-2491 Fax: (42)-7-375-278 Email: GEOFBRIM@ SAVBA.SK

120

Forthcoming Symposia related to Geodesy

1996 September 7, 16

XII International Course in Engineering Geodesy Graz, Austria

1995 March 26 - April 1

International School - GPSfor Geodesy Delft, The Netherlands 1995 April 3 - 5

3rd International Workshop High Precision Navigation Stuttgart, Germany 1995 May 3-5

EUREF

EUREF Symposium Helsinki, Finland 1995 April 3-7

European GeophysicalSociety Hamburg, Fed. Rep. of Germany 1995 May 9-11

Third International Seminar GPS in Central Europe Penc, Hungary

IERS

1995 May 10-12

IERS Workshop Paris, France AGU

1995 May 29, June 2

AGU Spring meeting Baltimore, USA IUGGRAG

1995 July 2 - 14

IUGG GeneralAssembly, Boulder Colorado, USA 1995 August 14-17

AAS/AIAA Astrodynamics Specialist Conference Halifax, Nova Scotia, Canada 1995 September 3-0 17th ICA General Assembly Barcelona, Spain

Integrated sensor integration: Theory, algorithms and systems Barcelona, Spain

MEETINGS

International Symposium on Kinematic Systems in Geodesy, Geomatics and Navigation (KIS'94), Banff, Canada, August 30, September 2, 1994. The 1994 International Symposium on Kinematic Systems in Geodesy, Geomatics and Navigation (KIS94), held at the Banff Centre, Banff, Alberta, during the period August 30 - September 2, 1994, was a tremendous success from all aspects. The conference was organized by the Department of Geomatics Engineering of The University of Calgary and sponsored by the International Association of Geodesy, the International Federation of Surveyors, the German Institute of Navigation, the U.S. Institute of Navigation, the Canadian Hydrographic Service, the Geodetic Survey of Canada and Alberta Transportation and Utilities. Fifty-four high quality and novel papers ranging from GPS and INS Equipment Trends to Kinematic Gravimetry and Gradiometry were presented in the following technical areas: Equipment Trends, Reference Frames and Kinematic Modeling, Measurement Procedures, Estimation Methods and Quality Control, Algorithms and Software, Real-Time Systems, Attitude Determination Methods, Applications, and Kinematic Gravimetry and Gradiometry. The Banff Centre of Fine Arts proved to be an excellent choice for the venue, providing the appropriate ambiance for the many formal and informal technical discussions. A pleasant mix of theoretical and application papers, together with the presentation of relevant products from selected exhibitors, created a unique flavour appreciated by most.

Department of Geomatics Engineering University of Calgary 2500 University Drive N.W. Calgary Alberta T2N 1N4 Fax: (1)-403 284 1980

1995 October 2-5

New trends in low-frequencyGeodynamics Smolenice, West Slovakia IAG sponsored

FISOLS 95 Fifth International Symposium on Land Subsidence The Hague, The Netherlands

of IAG

The 561-pages KIS94 Proceedings, which contains all papers, can be purchased for U.S. $85. from :

1995 September 4-8

1995 October 16 - 22

Reports

KIS97 will be held at the same location during the period June 3-6, 1997. Gtrard Lachapelle M. Elizabeth Cannon Convenors

121

International School for the Determination and Use of the Geoid, Milan, Italy, October 10-14, 1994.

Une exposition sur les domaines de la topographie, la gtodtsie, la photogrammttrie et l'hydrographie, sur une surface de 1500 m2, a rtuni 88 stands et 30 posters.

During the period October 10 to 14 the first International School organized by the International Geoid Service (IGeS) has been held in Milan. The courses have been given by F. Sans6 (basic concepts in geodesy and geoid computation), R. Rapp (global models of geopotential), R. Forsberg (terrain effects in geoid computations), C.C. Tscherning (geoid determination by least squares collocation), M. Sideris (Fourier techniques in geoid determination). Lectures notes will be published by the International Geoid Service.

Un compte-rendu plus dttaill6 sera publi6 dans la prochaine lAG Newsletter.

The participants to the school have been 34 from 17 countries (Austria, China, Denmark, France, Hungary, Indonesia, Italy, Korea, Malaysia, Mozambique, Slovakia, Somalia, Spain, Uruguay, Zambie, Zimbabwe); most of them being involved since several years in geodetic, geophysical, cartographic or surveying jobs. All lectures, but for the first one, have been followed by practical exercices at the computer, where the software now available at IGeS has been used. An evaluation of the school by the attendees has been extremely rewarding for the lecturers, and we have the impression that a replication of the school in next years, so complying with a main duty established in the IGeS by-laws, will certainly be useful to promote theoretical and practical culture in the world. F. Sans6

3 ~me Conference Internationale sur la Topographie (CITOP), Paris-Londres, 6-9 D~cembre 1994.

A. Bailly

3rd

International

Conference

Topography (CITOP), Paris-Londres, December

on

6-9, 1994.

In colloboration with the IAG, the french association for topography (AFT) has organized in Paris on december 6 to 8, 1994, the 3rd International Conference on Topography (CITOP). The conclusion has taken place in London on december 9, under the aegis of the Royal Institution for Chartered Surveyors (RICS), co-organizer of this meeting. In total, 1500 participants attended the meeting. The theme of the presentations was geodesy and engineering surveying of large linear projects. The texts have been published and additionnal copies can be requested at the following address: Association Fmn~aise de Topographie 136bis rue de Grenelle 75700 Paris SP France An exhibition in the fields of topography, geodesy, photogrammetry and hydrography has taken place over a surface of 1500 m2, including 88 stands and 30 posters. A. Bailly

En collaboration avec I'AIG, l'Association Fran~aise de Topographie (AFT) a organist la 3~me ConfErence Internationale de GEodtsie (CITOP) ~ Paris du 6 au 8 dtcembre 1994. L'tpilogue s'est tenu Londres le 9 dEcembre sous l'6gide de la Royal Institution for Chartered Surveyors (RICS) coorganisateur de celle-ci. Cette conftrence a rtuni au total 1500 participants. Le th~me des exposts trait Gtodtsie et Topomttrie des grands projets lintaires. Les textes ont fait l'objet d'une 6dition dont des exemplaires sont encore disponibles l'adresse suivante: Association Franqaise de Topographic 136bis rue de Grenelle 75700 Paris SP France

122

Fast Bibliography Here are listed the bibliographic items received by the Central Bureau, the Editor in Chief, or the Dresden Center which is also charge of the full and comprehensive publication of the International Geodetic Bibliography. These pages will be included in each issue of the Bulletin Geodtsique, presenting in a fast way the new information collected since the previous number nominally three months. Two parts contains respectively the books, reports, proceeding or else received (part A) and the geodetic papers published in journals or presented at symposia

(partB) PART A Books received 95001: Indice Generale dal 1941-1991, part one, author index, Bolletino di Geodesia e Scienze Affini, Istituto Geografico Militare, Suppl. 2, 1994. 95A002: Wild U., Ionosphere and Geodetic Satellite Systems: Permanent GPS tracking data for modelling and monitoring, Geod~tisch-geophysikalische Arbeiten in der Schweiz, Achtunvierzigster Band, Vol. 48, 1994. 95A003: LGR Publications and Annual Report 1993, Delft Geodetic Computing Center. 95A004" Ambrosius B.A.C., R.H.N. Haagmans, E. Vermaat, Earth oriented space research at Delft University of Technology, t990-1993, Delft University Press, 1994. PART B Geodetic Papers 95B001: Seitz B., Schramm B., B. Heck, Non-linear effects in the scalar free geodetic boundary value problem based on reference fields of various degrees, Manuscr. Geod., 19, n° 6, pp. 327-338, 1994. 95B002: Goenner H . , Grafarend E.W., You R.J., Newton mechanics as geodesic flow on Maupertuis' manifolds: the local isometric embedding into flat spaces, Manuscr. Geod., 19, n° 6, pp. 339-345, 1994. 95B003: Nerem R.S., Lerch F.J., Koblinsky C.J., Klosko S.M., Patel G.B., Williamson R.G., Ocean dynamic topography from satellite altimetry based on the GEM-T3 geoptential model, Manuscr. Geod., 19, n ° 6, pp. 346-365, 1994.

95B004: Beutler G., Brockmann E., Gurmer W., Hugentobler U., Mervart L., Rothacher M., Verdun A., Extended orbit modeling techniques at the CODE processing center of the International GPS Service for Geodynamics (IGS) : theory and initial results, Manuscr. Geod., 19, n ° 6, pp. 367-386, 1994.