395408f5-0f0e-43b3-83c8-dfa719a1bb87 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 2019-05-10 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 Global models of the VLF transmitter wave power in the inner radiation belt and slot region 2019-05-10 creation 2019-05-10 revision 2019-05-10 publication 2019-05-10 released 1.0 https://doi.org/10.5285/395408f5-0f0e-43b3-83c8-dfa719a1bb87 doi GB/NERC/BAS/PDC/01149 https://data.bas.ac.uk/ Please cite this item as: Meredith, N., Horne, R., Clilverd, M., & Ross, J. (2019). Global models of the VLF transmitter wave power in the inner radiation belt and slot region (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/395408f5-0f0e-43b3-83c8-dfa719a1bb87 Signals from manmade VLF transmitters, used for communications with submarines, can leak into space and contribute to the dynamics of energetic electrons in the inner radiation belt and slot region. We use ~5 years of plasma wave data from the Van Allen Probe A satellite to construct new models of the observed wave power from VLF transmitters both as a function of L* and MLT and geographic location. This work is reported in Meredith et al. (2019) and the data provided here enable reconstruction of all of the figures in the paper. No credit. completed Meredith, Nigel British Antarctic Survey, Natural Environment Research Council, UK Research & Innovation Researcher author Horne, Richard British Antarctic Survey, Natural Environment Research Council, UK Research & Innovation Researcher author Clilverd, Mark British Antarctic Survey, Natural Environment Research Council, UK Research & Innovation Researcher author Ross, Johnathan British Antarctic Survey, Natural Environment Research Council, UK Research & Innovation 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 > Sun-earth Interactions > Ionosphere/Magnetosphere Dynamics > Electric Fields/Electric Currents EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Dynamics > Plasma Waves EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Dynamics 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 VLF transmitters inner radiation belt plasma waves slot region theme Perigee of ~1.1RE; apogee of ~5.8RE; inclination of 10 degrees Van Allen Radiation Belts place Atmospheric conditions theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license This dataset is supplied under the Open Government Licence v3.0: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ url url crossReference doi doi crossReference url url largerWorkCitation textTable eng utf8 climatologyMeteorologyAtmosphere -180.0 180.0 -90.0 90.0 2012-10-26 2017-08-31 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 6815744 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=395408f5-0f0e-43b3-83c8-dfa719a1bb87 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: The data used in this study come from the NASA Van Allen Probe A. The wave data used in this study were downloaded from https://emfisis.physics.uiowa.edu/data/index and the magnetic ephemeris data were downloaded from https://www.rbsp-ect.lanl.gov/data_pub/rbspa/MagEphem/. The AE indices used in this study were downloaded from the NSSDC Omniweb. Full details of the subsequent analysis are given in Meredith et al. [2019]. Data collection: We use data from the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on board Van Allen Probe A. The wave electric field of the VLF transmitter signals is measured using the wave High Frequency Receiver (HFR). This instrument provides measurements of one component of the wave electric field in the plane perpendicular to the spin axis in 82 logarithmically spaced frequency bins in the frequency range 10 to 487 kHz every 6 s. For comparison with published wave magnetic field intensities and for use in diffusion calculations we also convert the wave electric field to the wave magnetic field. This requires knowledge of the electron gyrofrequency and the electron plasma frequency. The former is determined directly from the 1s fluxgate magnetometer measurements of the local magnetic field. The electron plasma frequency is derived from the HFR data and provided as a Level 4 data product. The data were subsequently analysed and processed as described in Meredith et al. [2019]. Data quality: The wave data have been calibrated and quality-controlled prior to release. asNeeded completed