2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalData/IMP8/MAG/PT15.36S NASA NumericalData IMP 8 MAG 15.36s Magnetic Field Measurements https://doi.org/10.48322/pxb6-h511 2025-12-04T13:29:35Z 2021-04-27T15:38:11 Only known prior ReleaseDate of the metadata 2023-07-30T12:34:56.789 Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727 2025-10-09T12:34:56.789 Revised ObservedRegions. JMW 2025-10-02T15:12:00Z Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. 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 updated value in Version tag. ZCB 2025-12-04T13:29:35Z Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB IMP 8 magnetic field measurements from tri-axis magnetometer. Time resolution is 15.36 second. Data are based on a 2010 data reprocessing by the PI team. Parameter details below are based on the version of the data in CDAWeb. User will acknowledge the IMP-8 magnetometer team, and the data access path used, in any publication resulting from the use of these data. Szabo, Adam 2023-01-01T00:00:00 Space Physics Data Facility spase://SMWG/Person/Adam.Szabo PrincipalInvestigator spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact IMP-8 Magnetometer Experiment Home Page https://wind.nasa.gov/imp8/ A web site hosting instrument information and providing access to the data spase://VMO/NumericalData/IMP8/MAG/PT15.36S spase://VSPO/NumericalData/IMP8/MAG/PT15.36S spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/imp/imp8/mag/ An ftp repository hosting 15s magnetic field data from IMP-8. HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/mag/ In CDF via HTTP from SPDF CDF spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=I8_15SEC_MAG&index=sp_phys I8_15SEC_MAG Subset, plot and list data via CDAWeb FTPBrowser https://omniweb.gsfc.nasa.gov/ftpbrowser/imp_mag15s.html Subset, plot and list data via FTPBrowser Text spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products CDAWeb HAPI Server https://cdaweb.gsfc.nasa.gov/hapi I8_15SEC_MAG Web Service to this product using the HAPI interface. CSV IMP8 MAG15 Level 2 3 spase://SMWG/Instrument/IMP8/MAG MagneticField 1973-10-30T15:00:32Z 2000-06-10T15:09:18.720Z Instrument stopped working on 2000-06-10. PT15.36S Heliosphere.NearEarth Earth.Magnetosheath Earth.Magnetosphere.Magnetotail The time resolution (cadence) is not constant. The time tag corresponds to the last 1.28s measurement in the 15.36s average. Since the data is on average 70% complete, this is quite often different from 15.36 seconds from the previous time tag. On average, however, it should be about 15.36 seconds. Magnetic field Epoch Epoch Epoch of the data point (last data in the 15.36-second average) PT15.36S Milliseconds 01-Jan-1973 00:00:00.000 31-Dec-2000 00:00:00.000 -1.0e+31 Temporal Number of Sequences N_Sequences The number of vectors used in the data average is 4 times this value. PT15.36S 0 999 -2147483648 Other Spacecraft Position GSE SC_Pos_GSE Spacecraft position in GSE coordinates PT15.36S Re 6.378e6>m Cartesian GSE 3 Xgse Component.I 1 Ygse Component.J 2 Zgse Component.K 3 -50.0 50.0 -1.0e+31 Positional Spacecraft Position GSM SC_Pos_GSM Spacecraft position in GSM coordinates PT15.36S Re 6.378e6>m Cartesian GSM 3 Xgsm Component.I 1 Ygsm Component.J 2 Zgsm Component.K 3 -50.0 50.0 -1.0e+31 Positional B magnitude F1_Average_B_15s Magnitude of the magnetic field PT15.36S nT 1e-9>T 0.0 100.0 -1.0e+31 Average Magnitude Magnetic B vector GSE B_Vector_GSE Magnetic field vector in GSE coordinates PT15.36S nT 1e-9>T Cartesian GSE 3 Bx GSE Component.I 1 By GSE Component.J 2 Bz GSE Component.K 3 -100.0 100.0 -1.0e+31 Vector Average Magnetic B vector GSM B_Vector_GSM Magnetic field vector in GSM coordinates PT15.36S nT 1e-9>T Cartesian GSM 3 Bx GSM Component.I 1 By GSM Component.J 2 Bz GSM Component.K 3 -100.0 100.0 -1.0e+31 Vector Average Magnetic B Diagonal Variances B_jj_Variances Matrix containing magnetic field variances; diagonal elements Bxx, Byy, Bzz in GSE coordinates PT15.36S nT^2 1e-18>T^2 Cartesian GSE 3 Bxx GSE 1 Byy GSE 2 Bzz GSE 3 0.0 5000.0 -1.0e+31 Variance Magnetic B off-diagonal variances B_jk_Variances Matrix containing magnetic field variances; off-diagonal elements Byx, Bzx, Bzy in GSE coordinates PT15.36S nT^2 1e-18>T^2 Cartesian GSE 3 Byx GSE 1 Bzx GSE 2 Bzy GSE Component.K 3 -5000.0 5000.0 -1.0e+31 Variance Magnetic