Phase-sensitive radar (ApRES) time series data from Thwaites eastern ice shelf, 2020 ...

• Main Authors: Nicholls, Keith, Holland, David
• Format: Dataset
• Language: English
• Published: NERC EDS UK Polar Data Centre 2022
• Subjects: "EARTH SCIENCE","CRYOSPHERE","GLACIERS/ICE SHEETS","GLACIER MASS BALANCE/ICE SHEET MASS BALANCE"; "EARTH SCIENCE","CRYOSPHERE","GLACIERS/ICE SHEETS","GLACIER MOTION/ICE SHEET MOTION"; "EARTH SCIENCE","CRYOSPHERE","GLACIERS/ICE SHEETS","GLACIER THICKNESS/ICE SHEET THICKNESS"; "EARTH SCIENCE","CRYOSPHERE","GLACIERS/ICE SHEETS","GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHY"; "EARTH SCIENCE","CRYOSPHERE","GLACIERS/ICE SHEETS","GLACIERS"; "EARTH SCIENCE","CRYOSPHERE","SNOW/ICE","ICE GROWTH/MELT"; "EARTH SCIENCE","TERRESTRIAL HYDROSPHERE","GLACIERS/ICE SHEETS","GLACIER MASS BALANCE/ICE SHEET MASS BALANCE"; "EARTH SCIENCE","TERRESTRIAL HYDROSPHERE","GLACIERS/ICE SHEETS","GLACIER MOTION/ICE SHEET MOTION"; "EARTH SCIENCE","TERRESTRIAL HYDROSPHERE","GLACIERS/ICE SHEETS","GLACIER THICKNESS/ICE SHEET THICKNESS"; "EARTH SCIENCE","TERRESTRIAL HYDROSPHERE","GLACIERS/ICE SHEETS","GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHY"; "EARTH SCIENCE","TERRESTRIAL HYDROSPHERE","GLACIERS/ICE SHEETS","GLACIERS"; "EARTH SCIENCE","TERRESTRIAL HYDROSPHERE","SNOW/ICE","ICE GROWTH/MELT"; "EARTH SCIENCE","SPECTRAL/ENGINEERING","RADAR"; ApRES; ITGC; Thwaites Glacier; basal melt rate; ice shelf; vertical strain rate; Ice Sheet; Ice Shelf; Thwaites Ice Shelf
• Online Access: https://dx.doi.org/10.5285/b81bff87-3429-4754-b4b5-c6b58198e744; https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01641

The dataset comprises ApRES (Autonomous phase-sensitive Radio Echo Sounder) time series from four sites (G1-4) through the grounding zone of the eastern Thwaites ice shelf. The instruments were deployed in early 2020 and recovered in early 2021 as part of the International Thwaites Glacier Collaboration (ITGC) MELT project. The aim was to provide time series of basal melt rates and the vertical strain rate at each site. The ApRES DAT files were converted to netCDF for publication. Each burst in an ApRES file maps straightforwardly to a group in the corresponding netCDF file. This is a lossless, reversible process. The data were acquired under funding from ITGC: NE/S006656/1. ... : The datasets were collected using standard ApRES methodology with instrument configuration described in data headers. The radar bandwidth was 200 MHz, centred on 300 MHz with a 1-second chirp length at a power of 20 dBm. Bursts of 20 chirps were collected at 2-hourly intervals. The ApRES DAT files were converted to netCDF for publication, using the bas-apres Python package. ...