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/DE1/PWI/SFC_LFC/PT409M NASA DisplayData DE 1 Plasma Wave Instrument (PWI) Step Frequency and Low Frequency Correlator Spectrogram Plots Dynamics Explorer 1 PWI SFR/LFC Spectrogram Plots. DE-A PWI SFR/LFC Spectrogram Plots. 2025-12-04T13:27:55Z 2020-07-07T19:48:33Z Only known prior ReleaseDate of the metadata 2025-11-14T16:17:33Z 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 2025-12-04T13:27:55Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB This dataset contains dynamic spectrogram PNG plots of the DE-1/PWI Step Frequency Correlator and Low Frequency Correlator data. Each plot spans one orbital period (6 hours 49 minutes). There are three types of files in this dataset. Those derived from data using: 1) the spin-plane 200m electric antenna (Ex), 2) the spin-axis 8m electric antenna (Ez) and 3) the magnetic antennas (B-H) consisting of a 1.0m^2 loop antenna in the spin plane and a search coil on the spin axis. Each image consists of two panels. The title above each panel indicates the instrument, antenna and frequency range. Each panel is a plot of the power spectral density of received signal (color scale) as a function of operating frequency (in a logarithmic scale on the vertical axis) and time (horizontal axis). Beneath the time labels on the horizontal axis of the spectrograms are ephemeris data: position of the spacecraft in radial distance (Earth radii), McIlwain L-shell, magnetic local time, and geomagnetic latitude. Overlaid on each image are traces of the electron cyclotron frequencies. The file naming convention is: de1_pwi_0000_YYYYMMDD_HHMM_AAA.png where: 0000 - Replace with orbit number YYYYMMDD - Replace with date HHMM - Replace with start time AAA - Replace with antenna string Gurnett, Donald A. 2025-11-14T16:17:33Z Space Physics Data Facility; University of Iowa spase://SMWG/Person/Donald.A.Gurnett PrincipalInvestigator spase://SMWG/Person/Jolene.S.Pickett MetadataContact spase://SMWG/Person/Larry.J.Granroth MetadataContact spase://SMWG/Person/Chris.W.Piker MetadataContact DE-1 Plasma Wave Investigation http://www-pw.physics.uiowa.edu/de/home.html DE-1 PWI page maintained at the University of Iowa with descriptions of the instrument, an interactive spectrogram viewer for creating summary plots and access to pregenerated dynamic spectrograms. en Plasma Wave Instrument page at the NSSDC Master Catalog https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=1981-070A-02 en spase://NASA/NumericalData/DE1/PWI/SFC/PT0.25S DerivedFrom spase://NASA/NumericalData/DE1/PWI/LFC/PT0.25S DerivedFrom spase://NASA/NumericalData/DE1/Ephemeris/PT8S DerivedFrom spase://VWO/DisplayData/DynamicsExplorer1/PWI/SFC.LFC.PT409M spase://VSPO/DisplayData/DynamicsExplorer1/PWI/SFC_LFC/PT409M spase://VSPO/DisplayData/DE1/PWI/SFC_LFC/PT409M spase://SMWG/Repository/NASA/GSFC/SPDF Online Open 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 NASA Heliophysics data products DE-1/PWI SFC/LFC Browse Spectrogram Plots https://cdaweb.gsfc.nasa.gov/pub/pre_generated_plots/de/pwi/ Access to a directory tree (ordered by year) of PNG format plots for DE-1 PWI SFC/LFC combineddynamic spectrograms. The files include those derived from data received by the spin-plane electric (Ex) the spin-axis electric (Ez) and the magnetic (B-H) antennas. en PNG None spase://SMWG/Repository/UIowa/RadioPlasmaWaveGroup Online Open DE-1/PWI SFC/LFC Browse Spectrogram Plots http://www-pw.physics.uiowa.edu/de/data/lowrate/cdf/browse/ Access to a directory tree (ordered by the first three digits of orbit number) of PNG format plots for DE-1 PWI SFC/LFC combineddynamic spectrograms. The files include those derived from data received by the spin-plane electric (Ex) the spin-axis electric (Ez) and the magnetic (B-H) antennas. en PNG None spase://SMWG/Instrument/DynamicsExplorer1/PWI Waves.Passive 1981-09-16T05:20:00Z 1984-06-28T23:20:00Z PT409M 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 SFC/LFC Electric Power Spectral Density V^2*m^-2*Hz^-1 PlasmaWaves Magnitude Pseudo ACElectricField RadioFrequency 1.78 409000 Hz SFC/LFC Magnetic Power Spectral Density nT^2 Hz^-1 PlasmaWaves Magnitude Pseudo ACMagneticField RadioFrequency 1.78 409000 Hz