2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/DisplayData/POLAR/PWI/SFR/B/DS/P1D NASA DisplayData POLAR Plasma Wave Investigation (PWI)Sweep Frequency Receiver-B (SFR-B) Daily Dynamic Spectrograms 2025-12-04T13:28:01Z 2020-07-07T19:48:34Z Only known prior ReleaseDate of the metadata 2025-11-14T16:17:34Z Added PublicationInfo. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB 2025-12-04T13:28:01Z Added MetadataRightsList. Updated to 2.7.1. ZCB The Polar PWI Sweep Frequency Receiver-B (SFR-B) collected data from March 1996 to September 1997. The SFR-B used the magnetic loop antenna (mounted on a 6m boom and oriented parallel to the Eu antenna). The SFR-B receiver spanned the frequency range from 26 Hz to 808 kHz in 5 bands: 26-200 Hz, 0.2 - 1.6 kHz, 1.7 - 12.6 kHz, 13-100 kHz, 100-808 kHz. Each image is a daily plot of the power spectral density (nT^2 Hz^-1) of received signal (color scale) as a function of operating frequency (in a logarithmic scale on vertical axis) and time (horizontal axis). At the top of each plot is a title indicating the Instrument, Receiver and Antenna used followed by the time span for the spectrogram. Beneath the time labels on the horizontal axis are ephemeris data: position of the spacecraft in radial distance (Earth radii), geomagnetic latitude, magnetic local time, and McIlwain L-shell. Overlaid on each image is a trace of the electron gyrofrequency. Gurnett, Donald A. 2025-11-14T16:17:34Z University of Iowa spase://SMWG/Person/Donald.A.Gurnett PrincipalInvestigator spase://SMWG/Person/J.Douglas.Menietti GeneralContact Polar Plasma Wave Investigation (PWI) Data and User's Guides http://www-pw.physics.uiowa.edu/plasma-wave/istp/polar/data.html A Polar PWI page is maintained at the University of Iowa with descriptions of interpretation issues, user's guides, data availability tables, a form for creating summary plots and access to pregenerated dynamic spectrograms. en User's Guide to PWI Receiver Design Features and Modes http://www-pw.physics.uiowa.edu/plasma-wave/istp/polar/modes.html Descriptions of PWI receiver and antenna modes. en spase://VWO/DisplayData/POLAR/PWI/Polar_PWI_SFR_B_Daily_DS_GIF spase://VWO/DisplayData/POLAR/PWI/SFR.B.DS.P1D spase://VSPO/DisplayData/POLAR/PWI/SFR/B/DS/P1D spase://SMWG/Repository/UIowa/RadioPlasmaWaveGroup Online Open Sweep Frequency Receiver (SFR) Survery Spectrograms - SFR Magnetic Antenna (Receiver B) http://www-pw.physics.uiowa.edu/plasma-wave/istp/polar/sfr/magnetic/ Access to web pages listing GIF format plots for Polar PWI SFR-B dynamic spectrograms. en GIF None spase://SMWG/Instrument/POLAR/PWI Waves.Passive Spectrum MagneticField 1996-03-25T00:00:00Z 1997-09-16T17:00:00Z RadioFrequency P1D Earth.Magnetosphere Earth.NearSurface.Plasmasphere Earth.NearSurface.AuroralRegion Earth.NearSurface.PolarCap Heliosphere.Inner Dynamic Spectrogram Spectrogram AKR Auroral hiss Auroral Kilometric Radiation Banded emissions Broadband Electrostatic Noise BEN Chorus Continuum radiation Electromagnetic Ion Cyclotron waves EMIC Electron Cyclotron Harmonics Kilometric Continuum radiation Myriametric radiation Plasmaspheric Hiss Solar radio burst Terrestrial Kilometric Radiation TKR UHR Upper hybrid resonance Whistler mode Whistlers SFR-B Power Spectral Density See the web page on Polar PWI Interpretation Issues http://www-pw.physics.uiowa.edu/plasma-wave/istp/polar/interpretation.html nT^2 * Hz^-1 PlasmaWaves Magnitude Pseudo ACMagneticField RadioFrequency 26 808 kHz