The airborne campaign 'RIISERBATHY' saw the acquisition of geophysical data across the Riiser-Larsen Ice Shelf in East Antarctica during the austral summer of 2022/2023, with Neumayer-III and Troll as base stations. It was jointly funded by the Alfred Wegener-Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany, and the Federal institute of Geosciences and Natural Resources, Hannover, Germany. Grant number of the Alfred Wegener-Institute for this campaign is 'AWI_PA_02138'. 'RIISERBATHY' is part of the overarching 'GEA' project (Geodynamic Evolution of East Antarctica). Here, airborne magnetic data are deposited, acquired by a Scintrex Cs-3 caesium vapour magnetometer. Related GNSS master tracks, gravity data, radio echo sounding data, as well as ice base and surface picks are deposited within PANGAEA as well and can be found using the PANGAEA identifier for this campaign, 'P5-236_RIISERBATHY_22_23' (https://www.pangaea.de/?q=campaign:name:%22P5-236_RIISERBATHY_22_23%22). The Scintrex Cs-3 was mounted in a tail boom of the aircraft. A three-component Billingsley TFM 100 fluxgate magnetometer was used for magnetic compensation. Diurnal variations of the magnetic field were recorded at Neumayer-III station and used for correction. Processing of magnetic data was carried out using the geophysical software 'Geosoft Oasis montaj'. The workflow included de-spiking, core-field and diurnal variation corrections as well as levelling procedures. Additionally, the magnetic pattern was transformed by a grid-based reduction to the pole (-61.3° geomagnetic inclination; -10.64° geomagnetic declination; 39511.9 total field strength).

Campaign: P5-236_RIISERBATHY_22_23Mission PI: H. EisermannCorrespondence: antonia.ruppel@bgr.de, geagles@awi.deInstruments used: Scintrex Cs-3 caesium vapour magnetometer, Billingsley TFM 100 fluxgate magnetometer