IUGG Structure

IUGG Associations, Inter-Association Activities, Union Commissions, and Working Groups encourage scientific investigation of Earth science and especially interdisciplinary aspects. Each Association establishes working groups and commissions that can be accessed by using the links below or at the top of this page.

IUGG Structure


  • International Association of Cryospheric Sciences (IACS)
  • International Association of Geodesy (IAG)
  • International Association of Geomagnetism and Aeronomy (IAGA)
  • International Association of Hydrological Sciences (IAHS)
  • International Association of Meteorology and Atmospheric Sciences (IAMAS)
  • International Association for the Physical Sciences of the Oceans (IAPSO)
  • International Association of Seismology and Physics of the Earth’s Interior (IASPEI)
  • International Association of Volcanology and Chemistry of the Earth’s Interior (IAVCEI)

Union Commissions

  • Commission on Climatic and Environmental Change (CCEC)
  • Commission on Mathematical Geophysics (CMG)
  • Commission on Geophysical Risk and Sustainability (GRC)
  • Commission on the Study of Earth’s Deep Interior (SEDI)
  • Commission for Data and Information (UCDI)
  • Commission on Planetary Sciences (UCPS)

IUGG Committees deal with a specific activity of the Union. The following IUGG Standing Committees are active presently:

  • Capacity Building and Education Committee
  • Statutes and ByLaws Committee
  • Visioning Committee

Moreover several ad hoc Committees are set up before IUGG General Assemblies to deal with the topics related to the assemblies, namely:

  • Nominating Committee
  • Site Evaluation Committee
  • Resolution Committee

Countries in which „independent activity in geodesy and geophysics has been developed“ may establish an Adhering Organization/Body and seek membership. For more information, visit How to Join or About IUGG.