Strapdown aerogravity survey across the Brunt Ice Shelf, 2017

This data set contains strapdown aerogravity data collected during an airborne radar survey of the Brunt Ice Shelf as part of the NERC/BAS Life Time of Halley project. Unlike traditional stabilised platform gravity surveys strapdown gravity techniques, using an Inertial Measurement Unit (IMU) rigidly attached to the aircraft as the sensor, allow collection of gravity data during draped or turbulent flight. This was a key factor allowing for data collection during a dedicated radar survey. The survey was flown draped with an average height above the ice surface of 420 m, and includes 4716 km of new data. The aircraft used was the BAS aerogeophysicaly equipped twin otter VP-FBL. Data are available in both Geosoft database (.gdb) and ASCII file formats (.xyz).
The Brunt 2017 survey was carried out as part of the NERC/BAS Life Time of Halley project. Subsequent data processing was supported by the BAS Geology and Geophysics team. In addition we thank the BAS air unit and staff at Halley Research Station for their support of the 2017 field campaign.