G13C:
New Frontiers, Challenges, and Opportunities for Vertical Motion Observations and Glacial Isostatic Adjustment Modeling II

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Session ID#: 15724

Session Description:
Models of glacial isostatic adjustment (GIA) quantify the response of the solid Earth to cryospheric loading. GIA delivers one of the main signals for global and regional geodetic observations, e.g. gravity changes (GRACE, absolute gravity), surface displacement (GPS, VLBI) and sea level variations (tide gauge).  It also contributes to present-day sea-level predictions and sea-level reconstructions on geological time scales.

Advances in observational techniques, solid earth mechanics and earth system models open new directions in GIA research, e.g., application of InSAR techniques, consideration of stress dependent or transient Earth rheologies, as well as lateral viscosity contrasts, and development of ice-sheet/solid-Earth coupling strategies. We invite submissions that use geodetic observations and/or numerical modeling of solid Earth/cryosphere interactions, including constitutive theories of rock mechanics extrapolated to the mantle and crust. We also welcome cryosphere-geosphere interactions like coupled ice-sheet/sea-level modeling and the contribution of glacially-induced stress changes to earthquakes and magmatic events.

Primary Convener:  Volker Klemann, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
Conveners:  David A Phillips, UNAVCO, Inc. Boulder, Boulder, CO, United States, Michael Floyd, Massachusetts Institute of Technology, Cambridge, MA, United States and Thomas S James, Geological Survey of Canada, Natural Resources Canada, Sidney, BC, Canada
Chairs:  David A Phillips, UNAVCO, Inc. Boulder, Boulder, CO, United States and Volker Klemann, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
OSPA Liaison:  Jeanne M Sauber, NASA Goddard Space Flight Center, Geodesy and Geophysics Laboratory, Greenbelt, MD, United States
Index Terms:

0726 Ice sheets [CRYOSPHERE]
1207 Transient deformation [GEODESY AND GRAVITY]
1236 Rheology of the lithosphere and mantle [GEODESY AND GRAVITY]
8162 Rheology: mantle [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Rapid viscoelastic uplift in the northern Antarctic Peninsula, as a result of recent ice unloading (Invited) (118926)
Matt A King, University of Tasmania, Surveying and Spatial Sciences, School of Technology, Environments and Design, Hobart, TAS, Australia, Eugene W Domack, University of South Florida St. Petersburg, College of Marine Science, St Petersburg, FL, United States, Valentina R. Barletta, Technical University of Denmark, National Space Institute, Kgs. Lyngby, Denmark and Andrea Bordoni, Technical University of Denmark, Institut for Matematik og Computer Science, Kgs Lyngby, Denmark
Similarities between Last Glacial Maximum and present-day mass loss from the Greenland ice sheet (Invited) (119783)
Shfaqat Abbas Khan1, Ingo Sasgen2, Michael G Bevis3, Tonie M van Dam4, Jonathan L Bamber5, John M Wahr6, Michael J Willis7, Kurt Henrik Kjaer8, Bert Wouters6, Veit Helm9, Beata M Csatho10, Kevin Michael Fleming11, Anders A Bjork8, Andy Aschwanden12, Per Knudsen13 and Peter Kuipers Munneke14, (1)Technical University of Denmark, Kgs. Lyngby, Denmark, (2)Alfred-Wegener-Institute Bremerhaven, Bremerhaven, Germany, (3)The Ohio State University, School of Earth Sciences, Columbus, United States, (4)University of Luxembourg, Luxembourg, Luxembourg, (5)University of Bristol, School of Geographical Sciences, Bristol, United Kingdom, (6)Univ of Colorado, Boulder, CO, United States, (7)University of Colorado Boulder, CIRES and Department of Geological Sciences, Boulder, CO, United States, (8)Natural History Museum of Denmark, København K, Denmark, (9)Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research Bremerhaven, Glaciology Department, Bremerhaven, Germany, (10)University at Buffalo, Department of Earth Sciences, Buffalo, NY, United States, (11)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, (12)University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States, (13)DTU Space, Lyngby, Denmark, (14)Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands
Interpreting the GNSS Vertical Coordinate Variations: (Invited) (185329)
Tonie M van Dam, University of Luxembourg, Luxembourg, Luxembourg, Jim Ray, Retired, Washington, DC, United States, Anne Sheehan, University of Colorado Boulder, Department of Geological Sciences and Cooperative Institute for Research in Environmental Sciences (CIRES), Boulder, United States, Thomas Herring, Massachusetts Institute of Technology, Cambridge, MA, United States, Mark H. Murray, U.S. Geological Survey Earthquake Science Center, Moffett Field, United States and Geoffrey Blewitt, University of Nevada Reno, Reno, NV, United States
Extracting the climatic signal from vertical GPS time series (161569)
Shimon Wdowinski, Florida International University, Earth & Environment, Miami, FL, United States, Tonie M van Dam, University of Luxembourg, Luxembourg, Luxembourg and Paulo de Tarso Setti Junior, Sao Paulo State University (UNESP), Presidente Prudente, Brazil
Subtleties of Estimating Scale Changes in Regional GPS Networks and Their Impact on Height Estimates. (130793)
Thomas Herring1, Timothy Ian Melbourne2, Mark H Murray3, Michael Floyd1, Walter Michael Szeliga2, Walter Michael Szeliga2, Robert W King4, David A Phillips5 and Christine Maria Puskas6, (1)Massachusetts Institute of Technology, Cambridge, MA, United States, (2)Central Washington University, Ellensburg, WA, United States, (3)New Mexico Institute of Mining and Technology, Socorro, NM, United States, (4)MIT, Cambridge, MA, United States, (5)UNAVCO, Inc. Boulder, Boulder, CO, United States, (6)UNAVCO, Inc., Boulder, CO, United States
Satellite Gravimetry and the Gravitational Dirichlet Problem (Invited) (194012)
Anthony Patrick Purcell and Paul Tregoning, Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia
The ICE-6G_C (VM5a) Global Model of the GIA Process: Antarctica at High Spatial Resolution (179738)
W Richard Peltier1, Rosemarie Drummond1 and Donald F Argus2, (1)University of Toronto, Physics, Toronto, ON, Canada, (2)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States
Neotectonic Controls on Upper Mantle Viscosity: Insights from GPS Geodesy and Implications for GIA Modelling and GRACE (187667)
Michael G Bevis, The Ohio State University, School of Earth Sciences, Columbus, United States, Shfaqat Abbas Khan, Technical University of Denmark, Kgs. Lyngby, Denmark, Terry J Wilson, Ohio State University Main Campus, Columbus, OH, United States, Tonie M van Dam, University of Luxembourg, Luxembourg, Luxembourg, Valentina R. Barletta, Technical University of Denmark, National Space Institute, Kgs. Lyngby, Denmark, Michael J Willis, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, Robert Smalley Jr, University of Memphis, Center for Earthquake Research and Information, Memphis, TN, United States, Stephanie Ann Konfal, Ohio State University Main Campus, Columbus, United States and Ian Dalziel, University of Texas at Austin, Institute for Geophysics, Austin, TX, United States

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