{
  "HAPI": "3.2",
  "x_description": "BB is the spectrum of B produced using FFT in FAC system. Polarization and propagation parameters derived from singular value decomposition (SVD) method of the cross-spectral matrix (sm). The SVD  method is described in Santolik et al (2003). The parameters calculated from the three magnetic components are BB, KSVD, ELLSVD, PLANSVD, DOP and POLSVD. KSVD is polar and azimuthal angles of k in FAC system. DOP is the degree of polarization defined in Samson (1973). PV is the Poynting vector (magnitude, polar and azimuthal angles) in FAC coordinate system. ESUM is the sum of the two electric auto-power spectra in the spacecraft spin plain. BMAG is the magnitude of DC magnetic field measured by FGM. The parameters are derived from STAFF_SC and EFW calibrated waveforms in ISR2 coordinate system. The change of coordinate system has been done using FGM data (5Hz). This dataset was generated as part of the MAARBLE (Monitoring, Analyzing and Assessing Radiation Belt Energization and Loss) collaborative research project which has received funding from the European Community's Seventh Framework Programme (FP7-SPACE-2011-1) under grant agreement n. 284520.  The contacts for the MAARBLE project are Ioannis A. Daglis, National Observatory of Athens Yuri Khotyaintsev, Swedish Institute of Space Physics Ondrej Santolik, Institute of Atmospheric Physics of the Academy of Sciences of the Czech Republic Sebastien Bourdarie, ONERA Richard B. Horne, The British Antarctic Survey Ian R. Mann, The University of Alberta Drew Turner, UCLA",
  "cadence": "PT10.240000S",
  "parameters": [
    {
      "type": "isotime",
      "units": "UTC",
      "name": "Time",
      "description": "time tag",
      "label": "Universal Time",
      "length": 24,
      "fill": null
    },
    {
      "type": "double",
      "name": "BB_xxyyzz_fac",
      "description": "Power spectrum of the B-field in FAC CS",
      "label": "Magnetic Power Spectral Density",
      "units": "nT^2 Hz^-1",
      "fill": "-1.00E+31",
      "size": [
        11,
        3
      ]
    },
    {
      "type": "double",
      "name": "KSVD_fac",
      "description": "Direction of propagation in FAC system (SVD).",
      "label": "Direction of propagation",
      "units": "\"deg\", \"deg\"",
      "fill": "-1.00E+31",
      "size": [
        11,
        2
      ]
    },
    {
      "type": "double",
      "name": "ELLSVD",
      "description": "Ellipticity of the polarization (SVD).",
      "label": "Ellipticity of the polarization (SVD).",
      "units": "Unitless",
      "fill": "-1.00E+31",
      "bins": [
        {
          "name": "Frequency__C1_CP_AUX_MAARBLE_ULF_PC1",
          "centers": [
            1.0742,
            1.4649,
            1.8555,
            2.2461,
            2.6368,
            3.0274,
            3.418,
            3.8087,
            4.1993,
            4.59,
            4.9806
          ],
          "units": null
        }
      ],
      "size": [
        11
      ]
    },
    {
      "type": "double",
      "name": "PLANSVD",
      "description": "Planarity of the polarization (SVD).",
      "label": "Planarity of the polarization (SVD).",
      "units": "Unitless",
      "fill": "-1.00E+31",
      "bins": [
        {
          "name": "Frequency__C1_CP_AUX_MAARBLE_ULF_PC1",
          "centers": [
            1.0742,
            1.4649,
            1.8555,
            2.2461,
            2.6368,
            3.0274,
            3.418,
            3.8087,
            4.1993,
            4.59,
            4.9806
          ],
          "units": null
        }
      ],
      "size": [
        11
      ]
    },
    {
      "type": "double",
      "name": "POLSVD",
      "description": "Degree of polarization in the polarization plane (SVD).",
      "label": "Degree of polarization in the polarization plane (SVD).",
      "units": "Unitless",
      "fill": "-1.00E+31",
      "bins": [
        {
          "name": "Frequency__C1_CP_AUX_MAARBLE_ULF_PC1",
          "centers": [
            1.0742,
            1.4649,
            1.8555,
            2.2461,
            2.6368,
            3.0274,
            3.418,
            3.8087,
            4.1993,
            4.59,
            4.9806
          ],
          "units": null
        }
      ],
      "size": [
        11
      ]
    },
    {
      "type": "double",
      "name": "DOP",
      "description": "3D Degree of polarization.",
      "label": "3D Degree of polarization.",
      "units": "Unitless",
      "fill": "-1.00E+31",
      "bins": [
        {
          "name": "Frequency__C1_CP_AUX_MAARBLE_ULF_PC1",
          "centers": [
            1.0742,
            1.4649,
            1.8555,
            2.2461,
            2.6368,
            3.0274,
            3.418,
            3.8087,
            4.1993,
            4.59,
            4.9806
          ],
          "units": null
        }
      ],
      "size": [
        11
      ]
    },
    {
      "type": "double",
      "name": "BMAG",
      "description": "Magnitude of the DC B-field",
      "label": "DC Magnetic Field Magnutude",
      "units": "nT",
      "fill": "-1.00E+31"
    },
    {
      "type": "double",
      "name": "ESUM",
      "description": "Sum of the two electric auto-power spectra.",
      "label": "Sum of the two electric auto-power spectra.",
      "units": "mV^2 m^-2 Hz^-1",
      "fill": "-1.00E+31",
      "bins": [
        {
          "name": "Frequency__C1_CP_AUX_MAARBLE_ULF_PC1",
          "centers": [
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            1.8555,
            2.2461,
            2.6368,
            3.0274,
            3.418,
            3.8087,
            4.1993,
            4.59,
            4.9806
          ],
          "units": null
        }
      ],
      "size": [
        11
      ]
    },
    {
      "type": "double",
      "name": "PV_fac",
      "description": "Poynting vector in FAC system.",
      "label": "Poynting vector",
      "units": "\"W m^-2 Hz^-2\", \"deg\", \"deg\"",
      "fill": "-1.00E+31",
      "size": [
        11,
        3
      ]
    }
  ],
  "startDate": "2001-02-02T03:00Z",
  "stopDate": "2011-12-30T15:00Z",
  "x_tap_url": "https://csa.esac.esa.int/csa-sl-tap/data?retrieval_type=HEADER&DATASET_ID=C1_CP_AUX_MAARBLE_ULF_PC1&FORCEPACK=false",
  "sampleStartDate": "2011-12-30T12:00Z",
  "sampleStopDate": "2011-12-30T15:00Z",
  "x_tap_data_url": "https://csa.esac.esa.int/csa-sl-tap/data?RETRIEVAL_TYPE=product&RETRIEVAL_ACCESS=streamed&DATASET_ID=C1_CP_AUX_MAARBLE_ULF_PC1&START_DATE=2011-12-30T12:00:00.000Z&END_DATE=2011-12-30T15:00:00.000Z",
  "status": {
    "code": 1200,
    "message": "OK"
  },
  "x_LastUpdate": "2026-04-12T15:12:50Z"
}