Constraining Ice Sheet Basal Sliding and Horizontal Velocity Profiles Using A Stationary Phase Sensitive Radar Sounder

The full velocity structure of glacial ice is critical to understanding glacier dynamics, but such measurements are rare. We propose a novel data processing method to resolve the horizontal and vertical velocity profile of an ice column using existing autonomous phase-sensitive radio echo sounder (ApRES) systems. The availability and relatively low cost of these systems can enable more widespread measurement of the 3D velocity structure of ice, with important implications for observational constraints on ice dynamics and basal drag.