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Survey Plots of Selected Particle Data on Microfilm


Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1977-11-01 to 1979-01-19


This data set consists of survey plots on microfilm submitted by the experimenter. The survey plots combine three different plots of selected ISEE 1 and ISEE 2 particle data. All are plotted on a time scale of 24 h per frame. Radial distance at integral earth radii is indicated on the time scale. The scale below the time axis on the "PROTON SURVEY PLOT" is as yet unused. The ISEE 1 sensor rotates through 160 deg with respect to the spin axis. This rotation is synchronized to the spin period, and requires 12 spins for a complete swing and 12 more to return. Thus, each spin at a 24-spin cycle corresponds to a particular angle between the sensor and the spin vector. The points on the "PROTON AND ELECTRON SURVEY PLOTS" for ISEE 1 (second and fourth trace from the bottom) represent counts per second, averaged over all sectors of spins 4, 7, 16, and 19 in the 24-spin cycle (numbered 0 to 23). Only one point in four is plotted, so points are about 5 min apart in time. For ISEE 2, counts are averaged over all measurements in four spins for low bit rate, six spins for high bit rate. In all cases, counts are summed across the entire energy band shown. The Y scale is logarithmic. The "SPIN-ALIGNED FLUX" contains ISEE 1 data only. Ion and electron counts per second are spin averaged and summed over spins 0 and 23, then 11 and 12. These count rates indicate the particle count in the two directions (10 deg and 170 deg) most nearly parallel to the satellite spin axis. The "MAGNETIC FIELD PLOT" displays the B-field magnitude and its vector components in nT (gammas) for each satellite. Note the linear scale for values > or = 10 nT, logarithmic above 10 nT. Only every second point is plotted, so points are approximately 2.5 min apart.

Alternate Names

  • Particle Data Survey Plots, Mfilm


  • Space Physics: Magnetospheric Studies
  • Space Physics: Heliospheric Studies


  • 77-102A-09E

Additional Information



Questions and comments about this data collection can be directed to: Dr. H. Kent Hills



NameRoleOriginal AffiliationE-mail
Dr. Donald J. WilliamsGeneral ContactNOAA Environmental Research
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