{
  "Spase": {
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xmlns": "http://www.spase-group.org/data/schema",
    "xsi:schemaLocation": "https://www.spase-group.org/data/schema https://www.spase-group.org/data/schema/spase-2.7.0.xsd",
    "Version": "2.7.0",
    "NumericalData": {
      "ResourceID": "spase://GBO/NumericalData/SECS/Magnetometer/EICS/PT10S",
      "NamingAuthority": "GBO",
      "ResourceType": "NumericalData",
      "ResourceHeader": {
        "ResourceName": "Spherical Elementary Currents Systems (SECS) technique North American Equivalent Ionospheric Currents (EICs) derived at 10 sec Resolution in Geographic Coordinates",
        "AlternateName": "North American EIC data",
        "DOI": "https://doi.org/10.21978/p8d62b",
        "ReleaseDate": "2025-11-24T11:14:45Z",
        "RevisionHistory": {
          "RevisionEvent": [
            {
              "ReleaseDate": "2021-05-31T12:34:56.789",
              "Note": "Updated to SPASE Version 2.3.2 if needed, Applied quality conntrol for DOI usage, LFB"
            },
            {
              "ReleaseDate": "2024-06-13T00:00:00.000",
              "Note": "Updated to SPASE Version 2.6.0. Heavily revised the metadata in almost everyway. JMW"
            },
            {
              "ReleaseDate": "2025-08-05T13:12:18Z",
              "Note": "Added ObservedRegion(s). 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 value in Version tag. ZCB"
            },
            {
              "ReleaseDate": "2025-11-24T11:14:45Z",
              "Note": "Fixed HTML character codes. Added ResourceType and NamingAuthority. ZCB"
            }
          ]
        },
        "Description": "The Equivalent Ionospheric Currents (EICs) data set contains horizontal ionospheric current data (Jx and Jy) derived using the SECS technique [Amm and Viljanen, Earth Planets Space, v. 51 pp. 431-440, 1999]. Positive Jx points to the geographic north pole. Positive Jy points to geographic east. The location of these currents is in geographic coordinates at 10s resolution. The distribution of these currents is not the same as the spherical elementary current amplitudes. The UT and date are obtained from the file name. For more information see Weygand et al. J. Geophys. Res. 116, A03305, doi:10.1029/2010JA016177, 2011.",
        "Acknowledgement": "Dr. O. Amm; Dr. J.M. Weygand; Prof. V. Angelopoulos, Athabasca University THEMIS UCLA Magnetometer Network (AUTUMN), Natural Resources Canada (NRCan), Canadian Array for Realtime Investigations of Magnetic Activity (CARISMA), Technical University of Denmark (DTU), Falcon, Geophysical Institute Magnetometer Array (GIMA), MagStar, Magnetometer Array for Cusp and Cleft Studies (MACCS), Mid‐continent MAgnetoseismic Chain (McMAC), Solar Terrestrial Energy Program (STEP), THEMIS, United States Geological Survey (USGS)",
        "PublicationInfo": {
          "Authors": "Weygand, James M.",
          "PublicationDate": "2009-01-01T00:00:00",
          "PublishedBy": "University of California, Los Angeles"
        },
        "Funding": [
          {
            "Agency": "NASA",
            "Project": "NASA Themis/Midex",
            "AwardNumber": "NAS5-02099"
          },
          {
            "Agency": "NASA",
            "Project": "The Dynamics of Earth’s Magnetosphere in the Presence of Flow Shear",
            "AwardNumber": "80NSSC18K0570"
          },
          {
            "Agency": "NASA",
            "Project": "Investigation of the Role of Force Balance in Magnetosphere-Ionosphere Coupling",
            "AwardNumber": "80NSSC18K1220"
          },
          {
            "Agency": "NASA",
            "Project": "Data Services Upgrade: Spherical Elementary Currents Systems Archive for Magnetosphere-Ionosphere Coupling over North America",
            "AwardNumber": "NNX14AJ77G"
          },
          {
            "Agency": "NASA",
            "Project": "Data Services Upgrade: Expansion of the Spherical Elementary Currents Systems Dataset for Magnetosphere-Ionosphere Coupling",
            "AwardNumber": "NNX16AD63G"
          },
          {
            "Agency": "NASA",
            "Project": "A Proposal for HPDE Community Data and Simulation Metadata and Standards Services",
            "AwardNumber": "80GSFC17C0018"
          },
          {
            "Agency": "NASA",
            "Project": "Quantifying the response of ionospheric currents to substorm-time and non-substorm fast flows",
            "AwardNumber": "80NSSC18K1227"
          },
          {
            "Agency": "NASA",
            "Project": "Enhancing Geomagnetically Induced Current Understanding and Prediction over Continental United States",
            "AwardNumber": "80NSSC20K1364"
          },
          {
            "Agency": "NSF-NERC",
            "Project": "Collaborative Research - Conjugate Experiment to Investigate the Sources of High-Latitude Magnetic Perturbations in the Coupled Solar Wind-Magnetosphere-Ionosphere-Ground System",
            "AwardNumber": "2027190"
          },
          {
            "Agency": "NASA",
            "Project": "Assessing Interplanetary Shock-Induced dB/dt Variations Controlled by Impact Angles",
            "AwardNumber": "80NSSC22K0756"
          },
          {
            "Agency": "NASA",
            "Project": "Extreme High-Latitude Geomagnetic Variations and their Drivers",
            "AwardNumber": "80NSSC24K0259"
          }
        ],
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/James.M.Weygand",
            "Role": "ProjectScientist"
          },
          {
            "PersonID": "spase://SMWG/Person/Olaf.Amm",
            "Role": "Scientist"
          },
          {
            "PersonID": "spase://SMWG/Person/James.M.Weygand",
            "Role": "MetadataContact"
          }
        ],
        "InformationURL": [
          {
            "Name": "Journal of Earth, Planets, and Space article on the SECS technique",
            "URL": "https://doi.org/10.1029/2009JA014832",
            "Description": "Research Article on the SECS technique."
          },
          {
            "Name": "Journal of Geophysical Research article on the SECS technique as Applied to North America",
            "URL": "https://doi.org/10.1029/2010JA016177",
            "Description": "Research Article on the SECS technique applied to North America and Greenland."
          },
          {
            "Name": "SECS technique as Applied to North America",
            "URL": "https://sites.epss.ucla.edu/jweygand/eics_na_greenland-html-preview-equivalent-ionospheric-currents-over-north-america-and-greenland/",
            "Description": "Homepage with contact, \"Rules of the Road,\" and acknowledgement information on the SECS technique applied to North America and Greenland."
          }
        ],
        "PriorID": "spase://VMO/NumericalData/SECS/Magnetometer/EICS/PT10S"
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/SECS",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": {
          "Name": "Virtual Magnetospheric Observatory",
          "URL": "http://vmo.igpp.ucla.edu/data1/SECS/",
          "Description": "Equivalent ionsheric current data produced over North America and Greenland"
        },
        "Format": "Text",
        "Acknowledgement": "Dr. O. Amm; Dr. J.M. Weygand; Prof. V. Angelopoulos, AUTUMN, NRCan, CARISMA, DTU, Falcon, GIMA, MACCS, MagStar, McMAC, STEP, THEMIS, USGS"
      },
      "ProcessingLevel": "Calibrated",
      "ProviderResourceName": "THEMIS",
      "ProviderProcessingLevel": "Numerical Data",
      "InstrumentID": "spase://SMWG/Instrument/SECS/Magnetometer",
      "MeasurementType": "MagneticField",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2007-01-01T00:00:00",
          "StopDate": "2011-01-31T23:59:59",
          "Note": "Time format in data files is: day, month, year hour, min, seconds. Ex: '01-Jan-1981 00:00:00.000.' Data are not complete from 2007 to 2011. Availables months include: 2007/06, 2007/11-2008/03, 2008/10-2009/03, 2009/10-2010/01, and 2011/01"
        },
        "Cadence": "PT10S"
      },
      "ObservedRegion": [
        "Earth.Surface",
        "Earth.NearSurface.Ionosphere"
      ],
      "Keyword": [
        "10 sec",
        "ground magnetometer data",
        "equivalent ionospheric currents",
        "spherical elementary current systms"
      ],
      "Parameter": [
        {
          "Name": "Geographic Location of Equivalent Ionospheric Current",
          "ParameterKey": "geo_loc",
          "Description": "These data are the geographic location in units of degrees of the derived equivalent ionospheric current at 10 s resolution. The Altitude of the current vector is 100 km above the surface of the Earth.",
          "Caveats": "The date and time are obtained from the file name.",
          "Units": "degrees",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Spherical",
            "CoordinateSystemName": "GEO"
          },
          "Structure": {
            "Size": "2",
            "Description": "Geographic Latitude and Longitude of the derived equivalent ionospheric current value.",
            "Element": [
              {
                "Name": "Geographic Latitude",
                "Qualifier": "DirectionAngle.ElevationAngle",
                "Index": "1",
                "Units": "degrees",
                "ValidMin": "0",
                "ValidMax": "90"
              },
              {
                "Name": "Geographic Longitude",
                "Qualifier": "DirectionAngle.AzimuthAngle",
                "Index": "2",
                "Units": "degrees",
                "ValidMin": "0",
                "ValidMax": "360"
              }
            ]
          },
          "Support": {
            "Qualifier": "Vector",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Equivalent Ionospheric Currents (Jx and Jy)",
          "ParameterKey": "Jx_Jy",
          "Description": "These data are the Equivalent Ionospheric Currents (only the currents horizontal to the surface of the Earth: Jx and Jy) in units of mA/m at 10 s resolution. The Altitude of the current vector is 100 km above the surface of the Earth.",
          "Caveats": "The date and time are obtained from the file name. These are not the Hall currents, but a combination of the Hall and Pederson currents.",
          "Units": "mA/m",
          "CoordinateSystem": {
            "CoordinateRepresentation": "Spherical",
            "CoordinateSystemName": "GEO"
          },
          "Structure": {
            "Size": "2",
            "Description": "Jx of the derived equivalent ionospheric current value. Positive Jx points to the geographic north pole. Positive Jy points to geographic east.",
            "Element": [
              {
                "Name": "Jx",
                "Qualifier": "Component.I",
                "Index": "1",
                "Units": "mA/m",
                "ValidMin": "-1e8",
                "ValidMax": "1e8"
              },
              {
                "Name": "Jy",
                "Qualifier": "Component.J",
                "Index": "2",
                "Units": "mA/m",
                "ValidMin": "-1e8",
                "ValidMax": "1e8"
              }
            ]
          },
          "Support": {
            "Qualifier": "Vector",
            "SupportQuantity": "Other"
          }
        }
      ]
    }
  }
}