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24-Sec (Protons) and 168-Sec (Electrons) Sol. Wind Mom. (8/78-2/80) and G-Z (9/85)


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

Time span: 1978-08-16 to 1985-09-12


This data set contains solar wind proton and electron moments (in separate files) for the interval 16 August 1978 through 26 February 1980, after which time the ion instrument failed to return useable data. The nominal time resolution is 24 seconds for the proton data and 168 seconds for the electron data. Each data record contains the date and time, the density (per cm**3), the bulk flow speed (km/s), the bulk flow azimuth (0 to +/-180 degrees; with zero degrees corresponding to anti-sunward flow and positive flow azimuths corresponding to flow towards dawn), and the maximum and minimum temperatures (Kelvins). Also included in this data set are the electron measurements (at 24 second time resolution) for the three day interval surrounding the comet Giacobini-Zinner encounter in September 1985, i.e., 10, 11, and 12 September, 1985. Each data record in these files contains the date and time, the core density, the maximum and minimum core temperatures, the halo density, the maximum and minimum halo temperatures, the total electron density, the bulk flow speed, the bulk flow azimuth, the maximum and minimum total temperatures, the electron heat flux (erg/cm**2-sec), and the electron heat flux azimuth (degrees; 0 and 360 degrees correspond to heat flux directed anti-sunward, 90 degrees corresponds to heat flux directed toward dawn). Since the core and halo parameters are derived from a straight numerical integration over the entire electron distribution, the total density does not necessarily equal the sum of the core and halo densities. Solar wind electron moment data (168-second resolution) are continued in data set 78-079A-01O; solar wind proton (bulk flow latitude only, at 5-minute time resolution) are in 78-079A-01P; Merged plasma and magnetic field data for the geotail phase of the mission are in data set 78-079A-01Q; comet Giacobini-Zinner encounter electron data are also archived separately in 78-079A-01R. Except for the merged plasma and magnetic field geotail data set, these data sets do not contain any spacecraft position information. Values of ISEE-3/ICE position in GSE coordinates are included with the magnetic field data from JPL (data sets 78-079A-02D and 78-079A-02O). Spacecraft trajectory information for the comet encounter, also provided by JPL, are archived separately as data set 78-079A-00E.


  • Space Physics: Heliospheric Studies


  • 78-079A-01N

Additional Information



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



NameRoleOriginal AffiliationE-mail
Dr. John T. GoslingData ProviderLos Alamos National
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