2e0ebbc5-1539-4f3c-873d-c62ea354c35c 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 2019-12-04 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 line aeromagnetic data over Ellsworth Land (2001) 2019-12-04 creation 2019-12-04 revision 2019-12-04 publication 2019-12-04 released 1.0 https://doi.org/10.5285/2e0ebbc5-1539-4f3c-873d-c62ea354c35c doi GB/NERC/BAS/PDC/01279 https://data.bas.ac.uk/ Please cite this item as: Ferraccioli, F., Jones, P., & Smith, A. (2020). Processed line aeromagnetic data over Ellsworth Land (2001) (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/2e0ebbc5-1539-4f3c-873d-c62ea354c35c During the 2001-02 field season a regional survey was flown on a 10 km line spacing grid over the drainage basin of the Rutford Ice stream (West Antarctica), as part of the TORUS (Targeting ice stream onset regions and under-ice systems) project. We present here the processed line aeromagnetic data collected using scintrex cesium magnetometers mounted in the BAS aerogeophysically equipped Twin Otter aircraft. Data are provided as XYZ ASCII line data. No credit. completed Ferraccioli, Fausto British Antarctic Survey Researcher author Jones, P. British Antarctic Survey Researcher author Smith, Andrew British Antarctic Survey 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 > Magnetic Anomalies 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 Aerogeophysical Aeromagnetics Antarctic theme Ellsworth Land 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: Ferraccioli, F., Jones, P., & Smith, A. (2020). Processed line aeromagnetic data over Ellsworth Land (2001) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/2E0EBBC5-1539-4F3C-873D-C62EA354C35C 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. url url crossReference url url crossReference doi doi crossReference doi doi crossReference url url crossReference textTable eng utf8 geoscientificInformation -93.1 -80.4 -79.0 -75.7 2001-11-21 2001-12-11 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/plain bytes 31457280 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=2e0ebbc5-1539-4f3c-873d-c62ea354c35c WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: TORUS aeromagnetic dataset available here includes all channels from raw through to levelled, and draped products. Channel naming follows SCAR/ADMAP2 data release protocols. Also included in the available database are base level survey lines flown previously which complement the main TORUS grid. These lines have been processed in accordance with SCAR/ADMAP2 protocols but have not been levelled with TORUS data. Magnetic data channels and processing flow: Note that TORUS processing work flow is ordered differently to ADMAP2 protocols, but naming conventions, compensations and corrections are adhered to. MagR- Raw magnetic total field intensity data (nT). MagC- Compensated, or low pass filtered magnetic data. Adjustments to compensate for aircraft roll, pitch and yaw were applied. TCorr- Tiptank corrections (nT). These include DC shifts and gradients due to aircraft noice, etc. Dummy values if not applicable. MagTC- Compensated magnetic value adjusted for Tip tanks (where used). MagTC= MagC- TCorr (nT). BCorr- Low pass filtered (60 minute) magnetic base station correction. MagBTC- Compensated, tip tank and base station corrected mag. MagBTC= MagTC-BCorr (nT) RefField- Geomagnetic reference field value for which the magnetic data has been compensated. IGRF model 2010 as implemented in Geosoft (nT). MagBRTC- calculated as MagBRTC= MagBTC- RefField (nT). SCorr- Low pass filter (25 fiducials) applied to extra lines merged into the database with remnant noise. MagF- Final mag value before levelling (nT). MagL- Statistically levelled mag data (nT). MagML- Microlevelled magnetic data following technique of (Ferraccioli et al., 1998). Note tie lines are not included in the microlevelled data channel (nT). Basic channel description: Line name Line Number Flight ID Sequential flight number x x projected meters* y y projected meters* Lon Longitude WGS 1984, Lat Latitude WGS 1984, Height_WGS1984 Aircraft altitude (meters) in WGS 1984, Date Date of flight in time format e.g. 2006/01/08 Time Time (UTC) of flight e.g. 23:52:42.0 *Projected coordinates (x and y) are in Lambert conic conformal with two standard parallels defined as follows: Latitude of natural origin: -71 Longitude of natural origin: 0 Scale factor at natural origin 0.994 False easting 0 False northing 2082760.109 asNeeded completed