Cryospheric Deformation (joint with IACS)

IAG Co-Chair: Jeff Freymueller (Michigan State University, East Lansing, Michigan, USA)

IACS Co-Chair: Bert Wouters (Utrecht University /Delft University of Technology, Netherlands)

Vice-Chair: Natalya Gomez (McGill University, Montreal, Canada)


  • Improvement of ice loading/unloading histories
  • Improvement of Earth rheological models
  • Assessment of elastic loading and viscoelastic GIA models using present-day geodetic and climate model data of all types, or paleo-sea level data.
  • Assessing the impact of cryospheric deformation on geodetic reference frames and estimates of plate motions, and the differences between the frames of GIA models and the ITRF.
  •  Assessing impact of lateral variations in Earth rheology on interpretations of geodetic and geological data
  •  Investigate the impact of reference frame differences (mainly origin) between GIA models and geodetic reference frames
  • Stimulate and support the inter-comparison of 1-D and especially 3-D Earth rheological models
  • Stimulate and encourage the further development of open source software tools for modeling cryospheric deformation, and promote the inclusion of ice sheet-solid earth interactions in past and future ice sheet model runs.

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