Ice thickness, bed topography and basal-reflection strengths from radar sounding, Upstream B, West Antarctica

A.N. Novick, C.R. Bentley, N. Lord
1994 Annals of Glaciology  
Radar profiling in the area around Upstream B camp (82.5° S, 128.7° W) was performed during the austral 1991−92 summer. About 150 km of lines covering 80 km2along The Ohio State University strain grid were profiled. The high density of data along the profiling lines allowed us to use median filtering schemes to remove or decrease interference from near-surface diffractors. Bed and surface elevations are poorly correlated. Hydraulic-head gradients suggest ponding of water in some places and
more » ... ome places and drainage from others. Reflection amplitudes vary over a range of about 24 dB, partly because of scattering by crevasses, but partly also because of real differences in bed reflection.
doi:10.1017/s0260305500016372 fatcat:qply57pjjrhjjmm5tm3tmg2pla