Radio-echo sounding (RES) ice thickness data: LGB traverses 1990-95

The ANARE 100 MHz digital ice radar operated from the second traverse (1990/91) and recorded ice thicknesses approximately every 10-15 m along three routes: the 2014 km main traverse track from LGB00 (68.6543 S, 61.1201 E) near Mawson to LGB72 (69.9209 S, 76.4933 E) near Davis; the 516 km upper western offset track (50 km parallel upslope from main route) from LGBUW485 (68.6458 S, 60.0272 E) to LGBUW000 (72.6508 S, 55.9275 E); and the 560 km south western offset track from LGBUW485 to LGBOS01 (76.5152 S, 63.9098 E).

RES data for ice thickness measurements constituted a major component in the study of the mass budget and dynamics of the interior Lambert Glacier basin. Raw data were stored in 200 kb binary files containing 200 x 1024 x 8 bit sample waveforms giving approximately 10 m spacing between ice thickness values, together with a header field describing relevant parameters associated with each 2 km long section of track. Processed data were stored as 2 km averaged ice thickness spreadsheet files (MS Excel), or 100 m spatial resolution EPS files for plotting signal profiles.