The Los Alamos Synchonous Orbit Data Set

  1. C.T. Russell and
  2. David J. Southwood
  1. D.N. Baker,
  2. P.R. Higbie,
  3. R.D. Belian,
  4. E.W. Hones Jr. and
  5. R.W. Klebesadel

Published Online: 21 MAR 2013

DOI: 10.1029/SP020p0082

The IMS Source Book: Guide to the International Magnetospheric Study Data Analysis

The IMS Source Book: Guide to the International Magnetospheric Study Data Analysis

How to Cite

Baker, D.N., Higbie, P.R., Belian, R.D., Hones, E.W. and Klebesadel, R.W. (1982) The Los Alamos Synchonous Orbit Data Set, in The IMS Source Book: Guide to the International Magnetospheric Study Data Analysis (eds C.T. Russell and D. J. Southwood), American Geophysical Union, Washington, D.C.. doi: 10.1029/SP020p0082

Author Information

  1. Los Alamos National Laboratory, Los Alamos, NM 87545

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1982

ISBN Information

Print ISBN: 9780875902289

Online ISBN: 9781118664940



  • Charged particle analyzer (CPA);
  • Energetic proton measurement;
  • Geostationary orbit;
  • International Magnetospheric Study (IMS);
  • Los Alamos Synchronous Orbit Data Set;
  • Spacecraft and data processing;
  • Synchronous orbit;
  • Synoptic data set (SDS)


Energetic electron (30–15000 keV) and proton (145 keV–150 MeV) measurements made by Los Alamos National Laboratory sensors at geostationary orbit (6.6 RE) are summarized. The instrumentation employed and the satellite positions are described. The spacecraft have been variously located, but in their present configuration the Los Alamos satellites designated 1976–059, 1977–007, and 1979–053 are located, respectively, at ∼70°W, ∼70°E, and ∼135°W longitude. Several examples of the high temporal and full three-dimensional spatial measurement capabilities of these instruments are illustrated by examples from the published literature. Discussion is also given for the Los Alamos Synoptic Data Set (SDS) which gives a broad overview of the Los Alamos geostationary orbit measurements. The SDS data are plotted in terms of daily average spectra, 3-hour local time averages, and in a variety of statistical formats. The data summarize conditions from mid-1976 through 1978 (S/C 1976–059) and from early 1977 through 1978 (S/C 1977–007). The SDS compilations presented correspond to measurements at 35°W, 7O°W, and 135°W geographic longitude and thus are indicative of conditions at 9°, 11°, and 4.8° geomagnetic latitude, respectively. The bulk of the SDS report presents data plots which are organized according to Carrington solar rotations and, as such, the data are readily comparable to solar rotation-dependent interplanetary conditions. Potential applications of the Synoptic Data Set (presently available to all interested users) are discussed.