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

The Lambert Glacier Basin (LGB) series of five oversnow traverses were conducted from 1989-95. 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. The data available at the url below are stored in various formats.Summary data (2 km spatial average) can be obtained from CRC Research Note No.27 'Ice Thicknesses and Surface and Bedrock Elevations from the Lambert Glacier Basin Traverses 1990-95'.Documents providing archive details of the logbooks are available for download from the provided URL.This work was completed as part of ASAC projects 3 and 2216.Data are available via the related metadata record at the provided URL.