Investigating the Bias in GPS-derived 1-D Viscosity Models due to Antarctica’s Complex 3-D Mantle Structure

Evelyn M Powell1, Konstantin Latychev1, Natalya A Gomez2, Mark J Hoggard1 and Jerry X Mitrovica1, (1)Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States, (2)McGill University, Earth and Planetary Sciences, Montreal, QC, Canada