Department of Geomatics

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International Association of Geodesy (IAG)
Geodesy the science of determining the size
and shape of the Earth, and its external gravity
field. IAG website - http//www.gfy.ku.dk/iag/
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What is the IAG?

• A non-government scientific organisation
• Falls under the umbrella of the International
  Union of Geodesy and Geophysics (IUGG)

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International Union of Geodesy and Geophysics

• Comprises
• IAG Geodesy
• IASPEI Seismology and Physics of the Earths
  Interior
• IAVCEI Volcanology and Chemistry of the Earths
  Interior
• IAGA Geomagnetism and Aeronomy
• IAMAS Meteorology and Atmospheric Sciences
• IAHS Hydrological Sciences
• IAPSO Physical Sciences of the Ocean

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Objectives of the IAG

• to promote the study of geodetic problems
• to encourage geodetic research
• to promote and coordinate international
  cooperation in geodesy
• to promote geodetic activities in developing
  countries
• to provide a forum for discussion and publication
  of results of geodetic studies, research and
  related work

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IAG Structure

• Central Bureau
• Executive Committee
• Other Officers (e.g. Editor of JG)
• Five Sections
• Positioning
• Advanced Space Technologies
• Determination of the Gravity Field
• General Theory and Methodology
• Geodynamics

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IAG Section Structure

• Each Section is made up of
• Commissions
• Special Commissions
• Special Study Groups
• International Services (in some cases)

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For example in Section 1 (Positioning) ...

• Commission Global and Regional Geodetic
  Networks
• Special Commission Applications of Geodesy to
  Engineering
• Special Study Groups
• Precise Marine Positioning
• Quality Issues in Real-time GPS
• Active GPS Networks
• Advanced GPS Analysis for Precise Positioning
• GPS Ambiguity Resolution
• Antenna and Site Effects
• GPS for Atmospheric Monitoring

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IAG International Services

• IGS - International GPS Service for
  Geodynamics
• BGI - International Gravimetric Bureau
• IGeS - International Geoid Service
• ICET - International Centre of Earth Tides
• IERS - International Earth Rotation Service
• PSMSL - Permanent Service for Mean Sea Level
• BIPM - Bureau International des Poids et
  Mesures (Time Section)

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IAG Home Page www.gfy.ku.dk/iag/

• IAG structure (office bearers)
• Address list (IAG fellows and associates)
• Publications list
• IAG resolutions (General Assembly - Birmingham
  99)
• Educational centres in geodesy
• Activities of Special Study Groups
• Upcoming symposia
• The IAG newsletter
• Links to related sites