4bcc9b4e-fab5-46cd-aac3-56c28e61cff1 eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2024-10-15 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 Processed aeromagnetic line data flown from Rothera station with a Windracers Ultra UAV (2023/24 season) 2024-10-15 creation 2024-10-15 revision 2024-10-15 publication 2024-10-15 released 1.0 https://doi.org/10.5285/4bcc9b4e-fab5-46cd-aac3-56c28e61cff1 doi GB/NERC/BAS/PDC/01921 https://data.bas.ac.uk/ Please cite this item as: Jordan, T., Lowe, M., Robinson, C., Reed, T., & Toomey, R. (2024). Processed aeromagnetic line data flown from Rothera station with a Windracers Ultra UAV (2023/24 season) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/4bcc9b4e-fab5-46cd-aac3-56c28e61cff1 Airborne magnetic data provides insight into the subsurface geology and tectonic history. This dataset includes processed airborne magnetic data collected over Marguerite Bay during the 2023/2024 Antarctic field season. This survey was carried out as part of a wider UKRI Innovate UK Future Flight-3 SWARM project in collaboration with Windracers Ltd to demonstrate their Ultra Uncrewed Aerial Vehicle (UAV) as a platform for environmental science. As part of this project ~1600 km of new high resolution aeromagnetic data with a ground clearance of 500m was collected around Rothera research station, West Antarctica. Data were acquired using a GEMSys GSMP-35U UAV magnetometer mounted on a Windracers Ultra UAV. Magnetic line data is provided as comma separated ASCII file. This study was funded by Innovate UK through their Future flight challenge support for the "Protecting environments with unmanned aerial vehicle swarms" project (reference: 10023377). We thank BAS operations for their support and specifically the BAS air unit and ground support staff whose close cooperation and engagement with the UAV deployment made the project successful. We also thank staff at Windracers and Distributed avionics who provided remote support for UAV operations across the field season. No credit. completed Jordan, Tom British Antarctic Survey Researcher author Lowe, Maximilian British Antarctic Survey Researcher author Robinson, Carl British Antarctic Survey Researcher author Reed, Tom Distributed Avionics Researcher author Toomey, Rebecca Windracers Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Solid Earth > Geomagnetism theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Antarctic Peninsula UAV drone magnetic tectonics theme Marguerite Bay Antarctica place Geology theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/ otherRestrictions Further by downloading this data the user acknowledges that they agree with the NERC data policy (), and the following conditions: 1. To cite the data in any publication as follows: Jordan, T., Lowe, M., Robinson, C., Reed, T., & Toomey, R. (2024). Processed aeromagnetic line data flown from Rothera station with a Windracers Ultra UAV (2023/24 season) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/4bcc9b4e-fab5-46cd-aac3-56c28e61cff1 2. The user recognizes the limitations of data. Use of the data is at the users' own risk, and there is no warranty as to the quality or accuracy of any data, or the fitness of the data for your intended use. The data are not necessarily fully quality assured and cannot be expected to be free from measurement uncertainty, systematic biases, or errors of interpretation or analysis, and may include inaccuracies in error margins quoted with the data. otherRestrictions None url url crossReference doi doi crossReference textTable eng utf8 geoscientificInformation -69.28463 -67.75088 -68.1924 -67.57269 2024-02-09 2024-03-03 286.0 805.0 urn:ogc:def:crs:EPSG::5714 MSL height Not specific to any location or epoch. Hydrography. It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor text/csv bytes 180355072 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=4bcc9b4e-fab5-46cd-aac3-56c28e61cff1 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: The magnetic sensor was mounted in the payload bay door of the Ultra, meaning the sensor sat ~1.5 m behind the payload bay when the door was closed. This location was chosen as other areas far from the core electronic systems and engines, such as wing tips and tail, housed electronically activated control surfaces, which would likely generate unacceptable levels of noise. Magnetic data was collected with a GEMSys GSMP-35U UAV magnetometer. Data were logged at 10 Hz, and included GPS derived time and position, total magnetic field (nT) as well as x, y and z fluxgate magnetometer information and roll, pitch, heading information from a small Inertial Navigation System (INS) mounted on the aircraft floor. A magnetic base station, deployed close to Rothera Station, was used to correct for diurnal variations of the magnetic field. Prior to use the base station values were subject to the following corrections: i) DC correction to remove steps, associated with adjusting the base station support. A DC correction allows application of a uniform correction of a set value across the dataset ii) The base station data was detrended by a polynomial trend order of 8 to remove residual trends and the absolute average total field value. Iii) The data was then filtered by a mean filter with a window width of 40 (10 minutes) to remove residual high frequency noise. The base station data is also provided here for reference. The raw airborne magnetic data was initially cleaned by manually removing extreme outliers and spikes. Next the magnetic data was filtered with a statical mean filter with a window width of 10 (1 second). Magnetic compensation was applied to account for adjustments of the UVA in term of aircraft roll, pitch and yaw, based on data from a triad of fluxgate magnetometers, also de-spiked and filtered at 1 second. Compensation was carried out in the software Aeromagnetic Compensation Postprocessing Application from GEMSys. After compensation the total field magnetic survey data was corrected for the core field using the 2020 IGRF model, implemented in the Geosoft Oasis Montaj software. The magnetic data was levelled against ADMAP-2. Levelled ADMAP-2 data include a magnetic survey flown perpendicular to the SWARM survey. The ADMAP data was flown on two different altitudes at 2440 m and 1220 m. Therefore all data from SWARM and ADMAP-2 were upward continued to a constant altitude of 2440 m. Iterative levelling combined with removal of large outliers at the cross tie was applied until a satisfactory result (no artifacts in flight lines direction) was achieved. The levelled magnetic product was subtracted from the upward continued line data consisting of ADMAP-2 and SWARM data to obtain the levelling coefficients. Those coefficients are subsequently added to the SWARM line data at the original altitude. In doing so, the SWARM survey is levelled against ADMAP-2, while retaining the higher resolution that is achieved by a significant lower altitude. Data collection: Sensor(s): GEMSys GSMP-35U UAV magnetometer Platform(s):UAV - Windracers Ultra TD-02 Data quality: After levelling the crossover error was 37.7 nT. Data has 2 km line spacing. Along track resolution may be higher, but is limited by the distance to the nearest magnetic sources (>500 m). asNeeded completed