NASA Logo, National Aeronautics and Space Administration
NASA Space Science Data Coordinated Archive Header

2-Minute Proton and Alpha Solar Wind Moments Data


Availability: Archived at NSSDC, accessible from elsewhere

Time span: 1973-11-01 to 2001-10-01


This data set contains full resolution (126 sec) proton and alpha particle moments from the Los Alamos IMP 8 instrument, for times when IMP 8 was in the solar wind. Parameters included are proton density flow speed and azimuthal direction, and min and max temperatures; alpha particle parameters are given relative to protons: Abundance and temperature ratios, and relative flow speeds and directions. Alpha temperature anisotropy, and azimuthal angles of both proton and alpha pressure tensor symmetry axis are also given. The data, in ASCII, are accessible from

This data set is also accessible with graphical display and listing capability and with time and parameter subsetting capability at

Alternate Names

  • 2-Min Prot,Alpha Solar Wind Mmts


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


  • 73-078A-10F

Additional Information



Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Dr. John T. GoslingData ProviderLos Alamos National
Mr. Robert M. CandeyGeneral ContactNASA Goddard Space Flight
[] NASA Logo -