To coordinate the tasks and activities identified with the IUGG centennial celebrations, IUGG set up the Task Force on Union Centennial (TF100) comprising the following members:

• George Balmino, IUGG Secretary General (1991-1999), France
  
  
• Athena Coustenis, Chair of Honor and Recognition Committee, France
  
  
• Fiona Darbyshire, Chair of the Local Organizing Committee of the 27th IUGG General Assembly, Canada
  
  
• Alik Ismail-Zadeh, IUGG Secretary General, Germany/Russia
  
  
• Franz Kuglitsch, IUGG Executive Secretary (IUGG Secretariat)
  
  
• Chris Rizos, IUGG Bureau Member and Chair of Visioning Committee (Chair), Australia
  
  
• Johanna Salminen, Early career scientist, Finland
  
  
• Michael Sideris, IUGG President, Canada
  
  
• Denise Smyth-Wright, President of IAPSO, UK
  
  
• Hans Volkert, Chair of the IUGG Working Group on History, Germany
  
  
• Gordon Young, Chair, Canadian National Committee for IUGG