Airborne gravity data across Astrid Ridge, East Antarctica ...

• Main Authors: Eisermann, Hannes, Eagles, Graeme, Jokat, Wilfried
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2024
• Subjects: airborne gravity; Antarctica; Astrid Ridge; Lazarev Ice Shelf; Nivl Ice Shelf; Event label; Line; LATITUDE; LONGITUDE; Height; Gravity; Free-air gravity anomaly; DATE/TIME; Aircraft; PGM17 NGA's Preliminary Geopotential Model 2017; WEGAS_2009/10; POLAR 5; Antarc*; Dronning Maud Land; East Antarctica; Ice Shelf; Ice Shelves
• Online Access: https://dx.doi.org/10.1594/pangaea.961497; https://doi.pangaea.de/10.1594/PANGAEA.961497

This data set contains airborne gravity data across central Dronning Maud Land, East Antarctica, acquired during the austral summer of 2009/2010 and within the project 'West-East Gondwana Amalgamation and its Separation' (WEGAS). The data span the offshore Astrid Ridge, and parts of the Nivl and Lazarev ice shelves. The survey was conducted using a ZLS Ultrasys Lacoste & Romberg Air/Sea gravimeter S56 installed into - and operated with - the research aircraft Polar 5. Base readings were performed with a handheld gravity meter at the base station Novolazarevskaja and in Cape Town. A ground speed of 130 knots and a time-domain filter of 220 s leads to a spatial resolution of around 7 km. The average crossover error after bias adjustment is 4.2 mGal. When citing this data set, please also cite the associated manuscript: Eisermann, H., Eagles, G. & Jokat, W. Coastal bathymetry in central Dronning Maud Land controls ice shelf stability. Sci Rep 14, 1367 (2024). https://doi.org/10.1038/s41598-024-51882-2. ...