Thwaites MELT: Temperature, salinity and velocity time series from the grounding zone region of Thwaites Glacier Eastern ice shelf (2020)

• Main Authors: Davis, Peter, Nicholls, Keith, Holland, David
• Format: Dataset
• Language: English
• Published: UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation 2021
• Subjects: "EARTH SCIENCE","CRYOSPHERE","GLACIERS/ICE SHEETS","GLACIERS"; "EARTH SCIENCE","OCEANS","OCEAN ACOUSTICS","ACOUSTIC VELOCITY"; "EARTH SCIENCE","OCEANS","OCEAN TEMPERATURE","WATER TEMPERATURE"; "EARTH SCIENCE","OCEANS","SALINITY/DENSITY"; Antarctica; Salinity; Temperature; Thwaites Glacier; Velocity; Antarctic; Antarc*; British Antarctic Survey; Ice Shelf
• Online Access: https://dx.doi.org/10.5285/4ffad557-1c3c-4ea7-a73d-6d782331b08a; https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01468

Variability in temperature, salinity and velocity was observed approximately 1.5 m beneath the base of Thwaites Glacier in the grounding zone region of the Eastern Ice Shelf as part of the International Thwaites Glacier Collaboration MELT project. Using a borehole deployable turbulence instrument cluster, the average temperature, salinity and velocity was observed over a 15-minute period every 2 hours. Funding was provided by NSFPLR-NERC: Melting at Thwaites grounding zone and its control on sea level (THWAITES-MELT) NE/S006761/1. : The temperature and salinity data was collected using an RBRconcerto CT. The velocity data was collected using a Nobska MAVS (Modular Acoustic Velocity Sensor) differential acoustic travel-time 3-D velocity sensor. The instruments were attached to a battery, solar panel, and British Antarctic Survey datalogger at the ice surface. The 15-minute average values were calculated and stored on the datalogger every 2 hours. : RBRconcerto CT Nobska MAVS (Modular Acoustic Velocity Sensor) differential acoustic travel-time 3-D velocity sensor : The temperature data have an accuracy of ±0.002°C. The conductivity data have an accuracy of ±0.0003 S/m. The velocity data have an accuracy of ±0.1 cm/s. The RBRconcerto CT and Nobska MAVS were factory calibrated prior to deployment. Missing values are represented with -9999.