Ulysses URAP WFA Average B-Field at 10 Minutes Data Description Ulysses URAP - Unified Radio and Plasma Wave Experiment Bundle PDS3 DATA_SET_ID = ULY-J-URAP-4-SUMM-WFA-AVG-B-10MIN-V1.0 ORIGINAL DATA_SET_NAME = ULY JUP URAP WAVEFORM ANALYZER AVERAGE B-FIELD 10 MIN START_TIME = 1991-11-26T00:00:00.000 STOP_TIME = 1992-06-07T23:50:00.000 PDS3 DATA_SET_RELEASE_DATE = 1998-05-01 PRODUCER_FULL_NAME = ROGER HESS Collection Overview =================== A UDS data files Eight files are provided that conform to the UDS conventions regarding the naming of files and the format of the data. The eight files are divided into 4 pairs of files with each pair consisting of a file containing data averaged over a 10 minute period and a file containing the maximum data value during the same 10 minute period. The 4 pairs of file contain data for the RAR, the PFR, WFA - magnetic field, and WFA - magnetic field. A.4 Waveform Analyzer Magnetic Field The names of the files are (following the PDS convention): Tyyddd.TAB -> Averaged data Tyyddd.TAB -> Peak data yy: Last two digits of year. ddd: Day of year (1..366). The files are Ascii and contain one line for each time period (even if there are no valid data for a time period) so they contain 144 lines each. The format of the data is indicated by the following Fortran read statement (which can be used to read the files): DIMENSION F(22) READ(1,100) TIME,IPFRMODE,IANTENNA,IBPS,F 100 FORMAT(A24,1X,A2,A1,A1,22(1X,1PE9.2)) The variables are defined as follows TIME: Spacecraft event time in the format yyyy-mm-ddThh:mm:ss.sssZ. ANTENNA: Antenna used for low band (0.22 to 5.33 Hz). The high band (9.8 Hz and above) is always By. 1: By 2: Bz 3: Antenna switched during the averaging interval. 4: Antenna unknown. PFRMODE: Indicates the scan mode of the PFR instrument. 1: Fast scan mode. 2: Slow scan mode. 3: Fixed-frequency mode. 4: The mode switched during the averaging interval. 5: The mode could not be determined. BPS: Telemetry bit rate: 1: 128 bps. 2: 256 bps. 3: 512 bps. 4: 1024 bps. 5: Bit rate changed during averaging period. 6: Bit rate unknown. F: Contains the data for By or Bz (average values) of the 22 frequency channels. The frequencies are: F(1): 0.22 Hz F(2): 0.33 Hz F(3): 0.44 Hz F(4): 0.66 Hz F(5): 0.88 Hz F(6): 1.33 Hz F(7): 1.77 Hz F(8): 2.66 Hz F(9): 3.55 Hz F(10): 5.33 Hz F(11): 9.00 Hz F(12): 14.00 Hz F(13): 19.00 Hz F(14): 28.00 Hz F(15): 37.00 Hz F(16): 56.00 Hz F(17): 75.00 Hz F(18): 112.00 Hz F(19): 149.00 Hz F(20): 224.00 Hz F(21): 299.00 Hz F(22): 448.00 Hz These data are magnetic field intensities detected by the Waveform Analyzer (WFA) on the URAP instrument. Units: 10**-15 Tesla/Hz**0.5 Time resolution: 10 minutes Fill value for bad or missing data is -9.99e+10 References: =========== Barrow, C.H., and A. Lecacheux, Radio Emission from Jupiter Observed by Ulysses Before and After Encounter, Astron. Astrophys, 271, 335-343, 1993. Canu, P., N. Cornilleau-Werhlin, C. de Villedary, P.J. Kellogg, C.C. Harvey, and R.J. MacDowall, Observation of Electron Plasma Waves Upstream of Jupiter's Bow Shock by the URAP Experiment on board the Ulysses Spacecraft, in Proc. of the 2nd European Workshop on Collisionless Shocks, Issy-les-Moulineaux, France, 30 Sept-2 Oct 1992. (https://doi:10.1016/0032-0633(93)90088-J) Canu, P., N. Cornilleau-Werhlin, C. de Villedary, P.J. Kellogg, C.C. Harvey, and R.J. MacDowall, Observations of Electron Plasma Waves Upstream of the Jovian Bow Shock, Plan. Space Sci., 41, 811-822, 1993. (https://doi:10.1016/0032-0633(93)90088-J) Desch, M.D., Jupiter Radio Bursts and Particle Acceleration, Ap. J. Supp., 90 541-546, 1994. 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