{
  "Spase": {
    "xmlns": "http://www.spase-group.org/data/schema",
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xsi:schemaLocation": "https://www.spase-group.org/data/schema https://www.spase-group.org/data/schema/spase-2.7.1.xsd",
    "Version": "2.7.1",
    "MetadataRightsList": {
      "Rights": {
        "SchemeURI": "https://spdx.org/licenses/",
        "RightsIdentifierScheme": "SPDX",
        "RightsIdentifier": "CC0-1.0",
        "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
        "RightsName": "Creative Commons Zero v1.0 Universal",
        "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions"
      }
    },
    "DisplayData": {
      "ResourceID": "spase://NASA/DisplayData/ISEE1/PWE/SA/PT12H",
      "NamingAuthority": "NASA",
      "ResourceType": "DisplayData",
      "ResourceHeader": {
        "ResourceName": "ISEE 1 Plasma Wave Instrument Spectrum Analyzer Spectrogram Plots",
        "AlternateName": "ISEE-1 PWI SA Spectrogram Plots.",
        "ReleaseDate": "2025-12-04T13:27:59Z",
        "RevisionHistory": {
          "RevisionEvent": [
            {
              "ReleaseDate": "2020-07-07T19:48:34Z",
              "Note": "Only known prior ReleaseDate of the metadata"
            },
            {
              "ReleaseDate": "2025-11-14T16:17:34Z",
              "Note": "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"
            },
            {
              "ReleaseDate": "2025-12-04T13:27:59Z",
              "Note": "Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB"
            }
          ]
        },
        "Description": "This dataset contains dynamic spectrogram PNG plots of the ISEE-1/PWI Spectrum Analyzer data. Each plot spans 12 hours. The dataset consists of files from 0-12UT and 12-24UT. These data were obtained from the Ev long wire antenna in the spin plane and the Bz search coil along the spin axis. Each image consists of two panels. The title above the upper panel is \"ISEE-1 PWI Spectrum Analyzer Ev Antenna and Bz Search Coil\" 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). The upper panel is a plot of Electric Spectral Density (SD) the lower plot is Magnetic SD. Beneath the time labels on the horizontal axis of the spectrograms are ephemeris data: position of the spacecraft in radial distance (Earth radii), geomagnetic latitude, magnetic local time, and McIlwain L-shell. Overlaid on the upper plot are traces of the electron cyclotron frequencies. At the bottom of the image is the date, day number and time range. Located in the same directory are the daily ISEE-1 PWI Sweep Frequency Receiver (SFR) spectrograms.",
        "PublicationInfo": {
          "Authors": "Gurnett, Donald A.",
          "PublicationDate": "2025-11-14T16:17:34Z",
          "PublishedBy": "Space Physics Data Facility; University of Iowa"
        },
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Donald.A.Gurnett",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/Jolene.S.Pickett",
            "Role": "MetadataContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Larry.J.Granroth",
            "Role": "MetadataContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Chris.W.Piker",
            "Role": "MetadataContact"
          }
        ],
        "InformationURL": {
          "Name": "The University of Iowa ISEE-1 PWI Page",
          "URL": "http://www-pw.physics.uiowa.edu/isee/",
          "Description": "\n            ",
          "Language": "en"
        },
        "Association": {
          "AssociationID": "spase://NASA/NumericalData/ISEE1/PWE/SA/PT1S",
          "AssociationType": "DerivedFrom"
        },
        "PriorID": [
          "spase://VWO/DisplayData/ISEE1/PWE/SA.PT12H",
          "spase://VSPO/DisplayData/ISEE1/PWE/SA/PT12H"
        ]
      },
      "AccessInformation": [
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "RightsList": {
            "Rights": {
              "SchemeURI": "https://spdx.org/licenses/",
              "RightsIdentifierScheme": "SPDX",
              "RightsIdentifier": "CC0-1.0",
              "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
              "RightsName": "Creative Commons Zero v1.0 Universal",
              "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
            }
          },
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://spdf.gsfc.nasa.gov/pub/pre_generated_plots/isee/isee1/",
            "Description": "Access to a directory tree (ordered by year) of PNG format plots for ISEE-1 SFR (daily) and SA (12 hour) dynamic spectrograms.",
            "Language": "en"
          },
          "Format": "PNG",
          "Encoding": "None"
        },
        {
          "RepositoryID": "spase://SMWG/Repository/UIowa/RadioPlasmaWaveGroup",
          "Availability": "Online",
          "AccessRights": "Open",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "http://www-pw.physics.uiowa.edu/plasma-wave/isee/data/ISEE1/cdf/browse/",
            "Description": "Access to a directory tree (ordered by the year/month/day) of PNG format plots for ISEE-1 SFR (daily) and SA (12 hour) dynamic spectrograms.",
            "Language": "en"
          },
          "Format": "PNG",
          "Encoding": "None"
        }
      ],
      "InstrumentID": "spase://SMWG/Instrument/ISEE1/PWE",
      "MeasurementType": "Waves.Passive",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1977-10-23T00:00:00Z",
          "StopDate": "1987-09-26T23:59:59Z"
        }
      },
      "DisplayCadence": "PT12H",
      "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",
        "Broadband Electrostatic Noise (BEN)",
        "Chorus",
        "Continuum radiation",
        "Electron Acoustic Waves",
        "Electron Foreshock Waves",
        "Electromagnetic Ion Cyclotron waves",
        "EMIC",
        "Electron Cyclotron Harmonics",
        "Equatorial Noise",
        "Ion Acoustic Waves",
        "Ion Foreshock Waves",
        "Kilometric Continuum radiation",
        "Lion Roard",
        "Myriametric radiation",
        "Plasmaspheric Hiss",
        "Solar radio burst",
        "Terrestrial Kilometric Radiation",
        "TKR",
        "UHR",
        "Upper hybrid resonance",
        "Whistler mode",
        "Whistlers"
      ],
      "Parameter": [
        {
          "Name": "SA Electric Power Spectral Density",
          "Units": "V^2*m^-2*Hz^-1",
          "Wave": {
            "WaveType": "PlasmaWaves",
            "Qualifier": [
              "Magnitude",
              "Pseudo"
            ],
            "WaveQuantity": "ACElectricField",
            "FrequencyRange": {
              "SpectralRange": "RadioFrequency",
              "Low": "5.62",
              "High": "311000",
              "Units": "Hz"
            }
          }
        },
        {
          "Name": "SA Magnetic Power Spectral Density",
          "Units": "nT^2 Hz^-1",
          "Wave": {
            "WaveType": "PlasmaWaves",
            "Qualifier": [
              "Magnitude",
              "Pseudo"
            ],
            "WaveQuantity": "ACMagneticField",
            "FrequencyRange": {
              "SpectralRange": "RadioFrequency",
              "Low": "5.62",
              "High": "10000",
              "Units": "Hz"
            }
          }
        }
      ]
    }
  }
}