WEF’98 “Do we need a gravimetric geoid …”

It’s now a long break period. Students are on their vacation until the new academic session in September. So its time to catch-up with some readings. Found an old paper by WEF (1998) “Do we need a gravimetric geoid or a model of the AHD to transform GPS heights in Australia”. Its in WF7 paper #9. The paper elaborated on why geoid and LVD is not coincide by giving a scenario example of Australia.

In answering the question mentioned in the title (WEF 1998) suggested that it is preferable to use a technique that accounts for the discrepancies between the vertical datum and gravimetric geoid model. This suggested approach yields a model of the separation between AHD and the WGS84 ellipsoid. WEF pointed out this serves as interim solution until readjustment of AHD/or re-definition of AHD.

Similar approach has been adopted for instance by Jiang & Duquenne (1996) – J of G; and in USA by Milbert 1995 – Geoid Bulletin 4.

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Geoid Meeting Budapest (1998)

The Second Continental Workshop on the Geoid in Europe was held in Budapest in March 1998.

The proceedings

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IAG 120 - Towards an Integrated Global Geodetic Observing System (1998)

IAG 120 "Towards an Integrated Global Geodetic Observing System - IGGOS" is the proceedings of the international symposium Towards an Integrated Global Geodetic Observing System. The symposium was held as an initiative of section II Advanced Space Technology of the International Association of Geodesy (lAG). It took place in the building of the Bavarian Academy of Sciences in Munich from October 5 - 9, 1998. About 130 scientists from 24 countries participated in the symposium.

The symposium was divided into four themes;

1. reference system and datum integration,
2. strength and weakness of space techniques,
3. upcoming gravity field satellite missions, and
4. implications for Earth sciences.

The symposium proceedings was edited by Rummel (TU Munich), Drewes (DGFI), Bosch (DGFI) and Hornik (DGFI).

IAG 120 (published in 2000)

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IAG 119 - Geodesy on the Move

IAG 119 – Geodesy on the Move was published in 1997 (together with IAG 118) by Springer. This book was published as proceedings of the IAG Scientific Assembly held in Rio de Janeiro in September 1997. The proceedings was convened and edited by Rene Forsberg of Denmark, M Feissel and Reinhard Dietrich of Germany.

IAG 119 Geodesy on the Move

Reinhard Dietrich (photo 2014 - source)

A little bit about Rienhard Dietrich here - dresden and egu.

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IAG 118 - Advances in Positioning & Reference Frames

IAG Symposia 118 "Advances in Positioning & Reference Frames" published by Springer in 1998. This book was published as proceedings of the IAG Scientific Assembly held in Rio de Janeiro in September 1997. The proceedings was convened and edited by Fritz K Brunner of Technical University of Graz. The lAG Local Organizing Committee (LOC) of the symposium was led by Prof D Blitzkov.

IAG 118 (Published in 1997)

This symposium comprised six sessions:

Maintenance and Densification of Reference Frames (Claude Boucher),
GPS Reference Networks (Fritz K Brunner),
the SIRGAS Project (Luiz P S Fortes),
Current Developments in Precise GPS Positioning (Yehuda Bock),
GPS Kinematic Applications (Chris Rizos),
and a very successful Poster Session.
During the symposium, 25 invited papers were presented and 70 posters were displayed.

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IAG 117 - Gravity, Geoid and Marine Geodesy (1997)

IAG 117 – Gravity, Geoid and Marine Geodesy was published in 1997 with new design of cover layout by Springer. It is also the first issue under new series editor Klaus-Peter Schwarz of Calgary University. IAG 117 is the proceedings of the International Symposium on Gravity, Geoid and Marine Geodesy (GraGeoMar96) which was held on the main campus of the University of Tokyo from September 30 to October 5, 1996. The local organizing committee was led by Prof Jiro Segawa of Tokai University (Chairman of the National Committee for Geodesy) and assisted by Prof Hiromi Fujimoto and Prof Shuhei Okubo (both from Tokyo University). About 200 participants from 27 countries attended the Symposium.

IAG 117 (Published in 1997)

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IAG Symposia Proceedings 1996-1999

The IAG Symposia Proceedings are published in a special series by Springer Verlag, having the association president as the editor. This procedure has been used for the publication of several Symposia (Proceedings no. 101 to 114). The following have been published since Boulder 1995 Meeting:

115 GPS Trends in Precise Terrestrial, Airborne, and Spaceborne Applications, 1996

116 Global Gravity Field and Its Temporal Variations, 1996

117 Gravity, Geoid and Marine Geodesy, 1997.

118 Advances in Positioning and Reference Frames, 1998,

119 Geodesy on the Move, 1998.

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