Cross-Track Radar Uncertainty Over Thwaites Glacier
Top Figure: Cross-track glacial bed topography along a 98 km flight
line over a synthetic bed modeled after highland Thwaites Glacier.
Black lines indicate extents of area illuminated by radar.
Bottom Figure: Along-track bed topography. "Phantom bedrock" is seen by the radar when the nearest reflector is off-nadir in the cross-track direction. For example, at an along-track distance of 90 km (0:38 in this video), a feature ~1 km to the left of the aircraft is seen as the closest reflector. Red star indicates aircraft position.
Synthetic topography generated by John Goff at the University of Texas Institute for Geophysics.