{
  "Spase": {
    "xmlns": "http://www.spase-group.org/data/schema",
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xsi:schemaLocation": "http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_2_9.xsd",
    "Version": "2.2.9",
    "DisplayData": {
      "ResourceID": "spase://NASA/DisplayData/DE1/PWI/SFRA/PT2H",
      "ResourceHeader": {
        "ResourceName": "DE 1 Plasma Wave Instrument (PWI) Sweep Frequency Receiver-A 2 Hour Dynamic Spectrogram Plots",
        "AlternateName": [
          "Dynamics Explorer 1 PWI SFR-A 2 hour Dynamic Spectrogram Plots.",
          "DE-A PWI SFR-A 2 hour Dynamic Spectrogram Plots."
        ],
        "ReleaseDate": "2020-07-07T19:48:33Z",
        "Description": "This dataset contains two hour duration dynamic spectrogram GIF plots of the DE-1/PWI SFR-A (electric antenna). Each image is a plot of the power spectral density (V^2 m^-2 Hz^-1) of received signal (color scale) as a function of operating frequency (in a logarithmic scale on the vertical axis) and time (horizontal axis). At the top center of each plot is a title indicating the University of Iowa, the instrument, and the date. On the upper left is an indication of the receiver used, the upper right is the orbit number. Immediately below the title is a horizontal bar and the label \"WB\" on the extreme left indicating the time duration when wideband data were acquired. Beneath the time labels on the horizontal axis of the spectrogram 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, hydrogen and oxygen cyclotron frequencies. Running along the left edge of the plot next to the frequency scale is the date represented as two digit year, day of year, hour and minute of the start of the plot.",
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Donald.A.Gurnett",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/Ann.M.Persoon",
            "Role": "GeneralContact"
          }
        ],
        "InformationURL": [
          {
            "Name": "DE-1 Plasma Wave Investigation",
            "URL": "http://www-pw.physics.uiowa.edu/de/home.html",
            "Description": "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.",
            "Language": "en"
          },
          {
            "Name": "Plasma Wave Instrument page at the NSSDC Master Catalog",
            "URL": "https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=1981-070A-02",
            "Language": "en"
          }
        ],
        "PriorID": [
          "spase://VWO/DisplayData/DynamicsExplorer1/PWI/DE1_PWI_SFR_A_GIF",
          "spase://VWO/DisplayData/DynamicsExplorer1/PWI/SFR.A.PT2H",
          "spase://VSPO/DisplayData/DynamicsExplorer1/PWI/SFR/A/PT2H",
          "spase://VSPO/DisplayData/DE1/PWI/SFRA/PT2H"
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/UIowa/RadioPlasmaWaveGroup",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": {
          "Name": "SFR-A 2-hour spectrogram plots",
          "URL": "http://www-pw.physics.uiowa.edu/plasma-wave/de/sfr/gifs/a/",
          "Description": "Access to web pages listing GIF format plots for DE-1 PWI SFR-A dynamic spectrograms.",
          "Language": "en"
        },
        "Format": "GIF",
        "Encoding": "None"
      },
      "InstrumentID": "spase://SMWG/Instrument/DynamicsExplorer1/PWI",
      "MeasurementType": "Waves.Passive",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1981-09-16T05:20:00Z",
          "StopDate": "1984-06-28T23:20:00Z"
        }
      },
      "DisplayCadence": "PT2H",
      "ObservedRegion": [
        "Earth.Magnetosphere",
        "Earth.NearSurface.Plasmasphere",
        "Earth.NearSurface.AuroralRegion",
        "Earth.NearSurface.PolarCap",
        "Heliosphere.Inner"
      ],
      "Keyword": [
        "Dynamic Spectrogram",
        "Spectrogram",
        "AKR",
        "Auroral hiss",
        "Auroral Kilometric Radiation",
        "Banded emissions",
        "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"
      ],
      "Parameter": {
        "Name": "SFR-A Power Spectral Density",
        "Units": "V^2*m^-2*Hz^-1",
        "Wave": {
          "WaveType": "PlasmaWaves",
          "Qualifier": [
            "Magnitude",
            "Pseudo"
          ],
          "WaveQuantity": "ACElectricField",
          "FrequencyRange": {
            "SpectralRange": "RadioFrequency",
            "Low": "100",
            "High": "400000",
            "Units": "Hz"
          }
        }
      }
    }
  }
}