{
  "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"
      }
    },
    "Catalog": {
      "ResourceID": "spase://NASA/Catalog/IMP8/MAG/Multisource",
      "NamingAuthority": "NASA",
      "ResourceType": "Catalog",
      "ResourceHeader": {
        "ResourceName": "Multi-spacecraft bow shock crossing list",
        "DOI": "https://doi.org/10.48322/j75x-q816",
        "ReleaseDate": "2026-02-02T13:10:22Z",
        "RevisionHistory": {
          "RevisionEvent": [
            {
              "ReleaseDate": "2023-05-11T12:34:56.789",
              "Note": "Updated to SPASE Version 2.5.0 if needed, fix broken URL, Added DOI information, JMW"
            },
            {
              "ReleaseDate": "2023-09-27T12:34:56.789",
              "Note": "Updated Authors. JMW"
            },
            {
              "ReleaseDate": "2026-02-02T13:10:22Z",
              "Note": "Added MetadataRightsList and RightsList(s). Added ResourceType and NamingAuthority. Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB"
            }
          ]
        },
        "Description": "Lists of bow shock crossings observed by the IMP 8, \nGeotail, Magion-4 and Cluster/Rumba spacecraft.  For each crossing, time\nand spacecraft location are given, plus GSE and GSM components of upstream\nmagnetic field and solar wind velocity, upstream solar wind ion density\nand temperature, and multiple upstream derived parameters (sonic,\nAlfvenic and magnetosonic speeds and Mach numbers, plasma beta and flow\npressure, IMF clock and cone angles).  In addition, for IMP 8 only,\nseveral additional parameters are given, including downstream density,\nshock strength, and various flags related to data quality, etc.).\nTime coverage for the various spacecraft is non-uniform; IMP 8\ncoverage is complete from 1973 launch until the June 10, 2000, failure\nof the magnetometer.  Annual, spacecraft-specific files of crossings\nare ftp accessible as indicated below.  Further, the data are accessible\nvia a value-added interface with the ability to subset by parameter, to\nfilter by numeric ranges of any of the parameters, and to generate\nscatter plots of any one parameter against any other parameter.  The\ndata are extensively documented at the value-added interface and\nreferences therein.",
        "PublicationInfo": {
          "Authors": "J.H. King",
          "PublicationDate": "2022-01-01T00:00:00",
          "PublishedBy": "OMNIWeb plus, NASA Space Physics Data Facility"
        },
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Joseph.H.King",
            "Role": "GeneralContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Natalia.E.Papitashvili",
            "Role": "GeneralContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Jan.Merka",
            "Role": "GeneralContact"
          },
          {
            "PersonID": "spase://SMWG/Person/John.D.Richardson",
            "Role": "GeneralContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Ramona.L.Kessel",
            "Role": "GeneralContact"
          }
        ],
        "PriorID": [
          "spase://VSPO/Catalog/BS_Multisource",
          "spase://VSPO/Catalog/IMP8/MAG/Multisource"
        ]
      },
      "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": "SPDF bow shock crossing interface",
            "URL": "https://omniweb.gsfc.nasa.gov/ftpbrowser/bowshock.html",
            "Description": "Bow shock crossing data and documentation. Interface\nsupports subsetting, filtering by numeric ranges of any parameters,\nand 2-parameter scatter plots."
          },
          {
            "Name": "FTPS from SPDF (not with most browsers)",
            "URL": "https://spdf.gsfc.nasa.gov/pub/data/aaa_special-purpose-datasets/aaa_boundary_crossings/bowshock_crossings/",
            "Description": "Spacecraft-specific annual files of bow shock crossings"
          },
          {
            "Name": "HTTPS from SPDF",
            "URL": "https://spdf.gsfc.nasa.gov/pub/data/aaa_special-purpose-datasets/aaa_boundary_crossings/bowshock_crossings/",
            "Description": "In CDF via HTTP from SPDF"
          }
        ],
        "Format": "Text"
      },
      "InstrumentID": [
        "spase://SMWG/Instrument/IMP8/MAG",
        "spase://SMWG/Instrument/IMP8/PLS",
        "spase://SMWG/Instrument/Magion-4/MAG",
        "spase://SMWG/Instrument/Magion-4/VDPS",
        "spase://SMWG/Instrument/Geotail/MGF",
        "spase://SMWG/Instrument/Geotail/CPI",
        "spase://SMWG/Instrument/Cluster-Rumba/FGM",
        "spase://SMWG/Instrument/Cluster-Rumba/CIS"
      ],
      "PhenomenonType": "BowShockCrossing",
      "TimeSpan": {
        "StartDate": "1973-10-31T00:00:00Z",
        "StopDate": "2002-05-20T00:00:00Z",
        "Note": "As of 2012/01/16, time spans for individual spacecraft are\n          IMP 8:    1973-10-31 - 2000-06-09\n          Geotail:  1995-01-01 - 1997-11-02 \n          Magion-4: 1996-02-01 - 1997-07-31\n          Cluster:  2001-02-02 - 2002-05-20\n"
      }
    }
  }
}