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IAG |
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IAG- Section 5 |
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GGP Data Center |
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1. Program of Activities |
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The objective of the Commission is to promote international cooperation and coordination of investigations related to the observation, preprocessing, analysis and interpretation of earth tides.
By earth tides, we understand all phenomena related to the variation of the Earth's gravity field and to the deformation of the Earth's body induced by the tide generating forces, i.e. the forces acting on the Earth due to differential gravitation of the celestial bodies as the Moon, the Sun and the nearby planets.
The Commission will collaborate with all international and national organizations concerned with the observation, preprocessing, analysis and interpretation of earth tides.
The Commission will encourage and promote campaigns to develop, compare and calibrate instrumentation for earth tide observations, techniques of operation, procedures for data preprocessing and data analysis.
The Commission makes standard software for the prediction of earth tide phenomena and for the processing of earth tide observations available to the scientific community by an Electronic Information Service, started in November 1st 1995.Note that the ftp information service is no longer available, because since May 1997, the Electronic Information Service of the Earth Tide Commission is directly accessible from this home page.
The Electronic Information Service contains:
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See the description of the ETERNA 3.3 earth tide data processing package
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See the description of the PRETERNA earth
tide data format
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2. International Symposium on Earth Tides |
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The 13th International Symposium on Earth Tides (convenors Wenzel, Takemoto, Ducarme) was held in Bruxelles/Belgium from July 22 to July 25 in 1997.
112 scientists participated at the symposium, and 96 scientific contributions were presented.
The 14th International Symposium on Earth Tides (ETC2000) was held in Mizusawa, Iwate, Japan from August 28th to September 1st, 2000. The Symposium consisted of the following 9 sessions:
The 15th International Symposium on Earth Tides (ETC2004) was held in Ottawa,Canada, from August 2 to 6, 2004. The Symposium consists of the following 7 sessions:
Program, welcome addresses, Earth Tide Medal, reports, resolutions, see:
http://www.astro.oma.be/ICET/bim/140.html
Proceedings of the symposium were published in two forms:
Jentzsch, G. (editor), 2006. Earth Tides and Geodynamics: Probing the Earth at Sub-Seismic Frequencies.
Special Issue, Journal of Geodynamics, Vol 41, Nos. 1-3, 368 pp.
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3. The Earth Tide Commission Medal |
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In 1997, the IAG Earth Tide Commission decided to create the Earth Tide Commission Medal according to the following rules:
| The Earth Tide Commission normally awards the Earth Tide Commission Medal to a scientist for her/his outstanding contribution to international cooperation in earth tide research, on the occasion of the International Symposium on Earth Tides. The candidate for the medal shall be elected by the steering committee of the Earth Tide Commission (President, Vice-President, Secretary, and chairpersons of the working groups under the Earth Tide Commission). A member of the steering committee cannot be elected. The winner of the medal shall receive free registration to the International Symposium on Earth Tides, at which the medal is awarded to her/him, and she/he shall receive a free copy of the proceedings of that Symposium. If a member of the steering committee is proposed as candidate, she/he has no voice or vote concerning the award of the medal. |
At the opening session of the 13th International Symposium on Earth Tides on July 22nd, 1997, the Earth Tide Commission Medal was awarded for the first time to Baron Paul Melchior for his outstanding contribution to international cooperation in earth tide research.
The 2nd ETC Medal Award
In May 2000, the ETC steering committee decided to award the ETC Medal 2000
to the late Prof. H.- G. Wenzel
for his outstanding contribution to international cooperation in earth tide research.
The ETC awarded the Medal to Ms Marion Wenzel
at the Opening Session of ETS2000 on August 28 2000 at Mizusawa, Japan.
The 3rd ETC Medal Award
The ETC steering committee decided to award the ETC Medal 2004
to Prof. John Goodkind for his outstanding contribution to earth tide research
by inventing the superconducting gravimeter.
Since John Goodkind was not able to participate the symposium the ETC gave the
medal to Dr. Richard Warburton. He, as a co-worker of John Goodkind, was
involved in the development of the gravimeter himself, and he handed the medal
over to John Goodkind after the symposium.
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4. Working Groups |
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There are following Working Groups under the Earth Tide Commission:
The rules for Working Groups under an IAG Commission are:
WGs should solve a specific problem within four years time span
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5. National Representatives to the Earth Tide Commission |
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6. International Center for Earth Tides (ICET) |
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The Commission supports the activities of the International Center for Earth Tides (ICET) in collecting, analyzing and distributing earth tide observations. The ICET is considered as the executive office of the Earth Tide Commission.
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7. Bulletin d'Informations des Marees Terrestres |
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compare the Bulletin d'Information des Marees Terrestres for dtailed informations about the achievements of the symposia and the working groups.
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See Back Numbers of Bulletin d'Informations des Marees Terrestres
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8. E-mail Addresses of Scientists Affiliated to the Earth Tide Commission |
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L I N K |
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GGP
Global Geodynamic Project |
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ICET International Center for Earth Tides, Royal Observatory of Belgium | ||
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IAG International Association of Geodesy |
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| GGP-ISDC GGP - Information System and Data Center |
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