{ "HAPI": "3.2", "x_description": "Polarization and propagation parameters derived from singular value decomposition (SVD) method of the cross-spectral matrix (sm) using the PRASSADCO program with 4s (or 1s) time resolution at 27 (or 18) logarithmically distributed frequencies between either 8 (or 64) Hz to 4 kHz. The SVD method is described in Santolik et al (2003). The parameters calculated from the three magnetic components are THSVD, PHSVD, ELLSVD,POLSVD and BSUM. BSUM is the sum of the three magnetic auto-power spectra. When BSUM is inferior to 1.0E-09 nT^2/Hz, the calculation of the other magnetic dependant parameters is meaningless. The theta and phi variables are respectively the wave vector polar and azimuthal angles in MFA coordinate system. PVSIGN is the direction of the Poynting vector component parallel to the magnetic field. It is given only when E component is valid. Positive (negative) values correspond to a parallel (anti-parallel) Z-component of the Poynting vector. ESUM is the the sum of auto-power spectra of the two electric antennae. The calculation of PVSIGN is meaningless when BSUM is inferior to 1.0E-09 nT^2/Hz, and ESUM to 3.0E-09mv^2m^-2/Hz. The change of coordinate system has been done using FGM 5VPS data.", "cadence": "PT4.000000S", "parameters": [ { "type": "isotime", "units": "UTC", "name": "Time", "description": "Interval time tag", "label": "UT Time", "length": 24, "fill": null }, { "type": "double", "name": "Duration", "description": "Half-interval duration", "label": "Half-interval duration", "units": "s", "fill": "9.999" }, { "type": "string", "name": "Status", "description": "STAFF-SA Status", "label": "STAFF-SA Status", "units": null, "length": 9, "fill": "ZZZZZZZZZ" }, { "type": "double", "name": "THSVD_mfa", "description": "Polar Angle of the direction of propagation in MFA coordinate system (SVD).", "label": "Polar Angle (SVD) in MFA coordinate system", "units": "deg", "fill": "-999.", "bins": [ { "name": "Frequency__C4_CP_STA_PPP", "centers": [ 8.7692, 11.0485, 13.9203, 17.5385, 22.0971, 27.8406, 35.0769, 44.1942, 55.6812, 70.1539, 88.3883, 111.3623, 140.3078, 176.7767, 222.7247, 280.6155, 353.5534, 445.4493, 561.231, 707.1068, 890.8987, 1122.462, 1414.2135, 1781.7975, 2244.9243, 2828.427, 3563.5945 ], "units": null } ], "size": [ 27 ] }, { "type": "double", "name": "PHSVD_mfa", "description": "Azymuthal angle of the direction of propagation in MFA coordinate system (SVD).", "label": "Azymuthal Angle (SVD) in MFA coordinate system", "units": "deg", "fill": "-999.", "bins": [ { "name": "Frequency__C4_CP_STA_PPP", "centers": [ 8.7692, 11.0485, 13.9203, 17.5385, 22.0971, 27.8406, 35.0769, 44.1942, 55.6812, 70.1539, 88.3883, 111.3623, 140.3078, 176.7767, 222.7247, 280.6155, 353.5534, 445.4493, 561.231, 707.1068, 890.8987, 1122.462, 1414.2135, 1781.7975, 2244.9243, 2828.427, 3563.5945 ], "units": null } ], "size": [ 27 ] }, { "type": "double", "name": "ELLSVD", "description": "Ellipticity of the polarization (SVD).", "label": "Ellipticity of the polarization (SVD).", "units": "Unitless", "fill": "-9.9", "bins": [ { "name": "Frequency__C4_CP_STA_PPP", "centers": [ 8.7692, 11.0485, 13.9203, 17.5385, 22.0971, 27.8406, 35.0769, 44.1942, 55.6812, 70.1539, 88.3883, 111.3623, 140.3078, 176.7767, 222.7247, 280.6155, 353.5534, 445.4493, 561.231, 707.1068, 890.8987, 1122.462, 1414.2135, 1781.7975, 2244.9243, 2828.427, 3563.5945 ], "units": null } ], "size": [ 27 ] }, { "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": "-9.9", "bins": [ { "name": "Frequency__C4_CP_STA_PPP", "centers": [ 8.7692, 11.0485, 13.9203, 17.5385, 22.0971, 27.8406, 35.0769, 44.1942, 55.6812, 70.1539, 88.3883, 111.3623, 140.3078, 176.7767, 222.7247, 280.6155, 353.5534, 445.4493, 561.231, 707.1068, 890.8987, 1122.462, 1414.2135, 1781.7975, 2244.9243, 2828.427, 3563.5945 ], "units": null } ], "size": [ 27 ] }, { "type": "double", "name": "BSUM", "description": "Sum of the three magnetic auto-power spectra.", "label": "Sum of the three magnetic auto-power spectra.", "units": "nT^2 Hz^-1", "fill": "-1.00E+31", "bins": [ { "name": "Frequency__C4_CP_STA_PPP", "centers": [ 8.7692, 11.0485, 13.9203, 17.5385, 22.0971, 27.8406, 35.0769, 44.1942, 55.6812, 70.1539, 88.3883, 111.3623, 140.3078, 176.7767, 222.7247, 280.6155, 353.5534, 445.4493, 561.231, 707.1068, 890.8987, 1122.462, 1414.2135, 1781.7975, 2244.9243, 2828.427, 3563.5945 ], "units": null } ], "size": [ 27 ] }, { "type": "double", "name": "PVSIGN", "description": "Parallel component of the Poynting vector normalized by its standard deviation.", "label": "Normalized Z-component of the Poynting vector", "units": "Unitless", "fill": "-1.00E+31", "bins": [ { "name": "Frequency__C4_CP_STA_PPP", "centers": [ 8.7692, 11.0485, 13.9203, 17.5385, 22.0971, 27.8406, 35.0769, 44.1942, 55.6812, 70.1539, 88.3883, 111.3623, 140.3078, 176.7767, 222.7247, 280.6155, 353.5534, 445.4493, 561.231, 707.1068, 890.8987, 1122.462, 1414.2135, 1781.7975, 2244.9243, 2828.427, 3563.5945 ], "units": null 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