4fd848a4-5c86-4324-8574-1a33cacba10b 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 2020-06-29 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 the Black Coast (1996/97 season) 2020-06-29 creation 2020-06-29 revision 2020-06-29 publication 2020-06-29 released 1.0 https://doi.org/10.5285/4fd848a4-5c86-4324-8574-1a33cacba10b doi GB/NERC/BAS/PDC/01342 https://data.bas.ac.uk/ Please cite this item as: Ferris, J. (2020). Processed line aeromagnetic data over the Black Coast (1996/97 season) (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/4fd848a4-5c86-4324-8574-1a33cacba10b Using the British Antarctic Survey's DeHavilland Dash-7, approximately 10,000 line-km of data were collected from the Black Coast and adjacent Weddell Sea embayment, which is situated ca. 600 km southeast of the airfield at Rothera Station . Flight lines were spaced at 10-km intervals with perpendicular tie lines spaced at 40 km. Where time and fuel allowed, selected areas were infilled at a 5-km line spacing. The marine part of the survey was flown at around less than 1000 m above sea level.We present here the processed line aeromagnetic data acquired using scintrex cesium magnetometers mounted on the BAS aerogeophysical equiped Dash-7. Data are provided as XYZ ASCII line data. No credit. completed Ferris, Julie 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 EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets 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 Aerogeophysics Aeromagnetics Antarctica theme Black Coast Antarctica place Geology Elevation 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: Ferris, J. (2020). Processed line aeromagnetic data over the Black Coast (1996/97 season) (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/4FD848A4-5C86-4324-8574-1A33CACBA10B 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. doi doi crossReference url url crossReference textTable eng utf8 geoscientificInformation -62.44115 -54.37236 -73.00124 -69.93392 1996-12-16 1997-01-08 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=4fd848a4-5c86-4324-8574-1a33cacba10b WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: Black coast aeromagnetic data presented in Ferris et al. (2002). The dataset available here includes channels from raw through to levelled products, although not all typical corrections have been applied to the Black Coast dataset. Channel naming follows SCAR/ADMAP2 data release protocols. Magnetic data channels and processing flow: MagR- Raw magnetic total field intensity data (nT). MagC- Compensated, or low pass filtered magnetic data. [nT]Adjustments to compensate for aircraft roll, pitch and yaw were applied (see Ferraccioli et al, 2007 for details). RefField- Geomagnetic reference field value for which the magnetic data has been compensated. IGRF model 2005 as implemented in Geosoft (nT). MagRTC- Compensated magnetic value adjusted for Tip tanks (where used) and geomagnetic reference field values. MagRTC= MagR- RefField. [nT] BCorr- Low pass filtered (60 minute) magnetic base station correction. [nT] MagBRTC- calculated as MagBRTC= MagRTC- Bcorr. [nT] ACorr- Additional correction applied to compensate for heading errors. MagF- Final mag value before levelling. MagL- Statistically levelled mag data. Basic channel description: Basic Channels 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 false origin: -66 Longitude of false origin: -70 Latitude of 1st standard parallel -76.4 Latitude of 2nd standard parallel -63.4 False easting 0 False northing 0 Positioning for the Black Coast survey used dual-frequency, Trimble 4000SSE GPS receivers, one in the aircraft linked to a TECOM antenna, the other as a base station at Rothera Research Base (Ferris et al., 2002). Positions are calculated for the phase centre of the aircraft antenna. All positions (Lat, lon and height) are referred to the WGS1984 ellipsoid. Data quality: Survey flights were restricted to times when a minimum of five satellites could be recorded both on the aircraft and at the ground station. The relative Dilution of Precision (RDOP) never rose above 5.0. Post-flight continuous kinematic differential GPS processing was carried out using Trimble GPSurvey software. RMS errors were ca. 0.08 m and the absolute positional accuracy is thought to be better than 5 m. Caesium-vapour magnetometers have a sensitivity of 0.005 nT, but the Dash-7 serves a dominantly logistic role, and so, it cannot provide the same data quality as a dedicated aeromagnetic survey plane. As a result, fourth digital differences (a commonly used figure of merit) for a typical uncompensated flight line are within 1.5 nT and this value drops to below 1 nT after compensation. No values are given for MagC, TCorr, MagRTC, BCorr, MagBRTC and SCorr. These channels are included for compatibility with ADMAP2 convention. asNeeded completed