{
  "Spase": {
    "xmlns": "http://www.spase-group.org/data/schema",
    "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"
      }
    },
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/Iridium/Birkeland/PT900.00S",
      "NamingAuthority": "NASA",
      "ResourceType": "NumericalData",
      "ResourceHeader": {
        "ResourceName": "Iridium magnetic field digital indices",
        "ReleaseDate": "2025-12-04T13:29:37Z",
        "RevisionHistory": {
          "RevisionEvent": [
            {
              "ReleaseDate": "2020-07-07T21:14:44Z",
              "Note": "Only known prior ReleaseDate of the metadata"
            },
            {
              "ReleaseDate": "2025-12-04T13:29:37Z",
              "Note": "Added MetadataRightsList. Added ResourceType and NamingAuthority. Updated to 2.7.1. ZCB"
            }
          ]
        },
        "Description": "Various summaries of Birkeland current system magnetic field data from ~70 Iridium spacecraft; cf. Anderson et al, JGR, 107, SMP-11, 2002.",
        "Contact": {
          "PersonID": "spase://SMWG/Person/Brian.J.Anderson",
          "Role": "GeneralContact"
        },
        "PriorID": [
          "spase://VSPO/NumericalData/P_IRIDIUM_HDR_DIGITAL",
          "spase://VSPO/NumericalData/Iridium/Birkeland/PT900.00S"
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/JHU_APL",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": {
          "Name": "AMPERE interface at JHU_APL",
          "URL": "http://ampere.jhuapl.edu/",
          "Description": "As of 9/5,2012, it was expected that Iridium data would be accessible from this site in \"a month or so.\""
        },
        "Format": "Text"
      },
      "ProviderProcessingLevel": "CALIBRATED",
      "MeasurementType": [
        "MagneticField",
        "ActivityIndex"
      ],
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1999-02-18T00:00:00",
          "RelativeStopDate": "-P21D",
          "Note": "Data are current to within a few weeks"
        },
        "Cadence": "PT900.00S"
      },
      "ObservedRegion": "Earth.NearSurface"
    }
  }
}