NDLI: An interplanetary magnetic field ensemble at 1 au

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An interplanetary magnetic field ensemble at 1 au

Content Provider	NASA Technical Reports Server (NTRS)
Author	King, J. H. Goldstein, M. L. Matthaeus, W. H.
Copyright Year	1985
Description	A method for calculation ensemble averages from magnetic field data is described. A data set comprising approximately 16 months of nearly continuous ISEE-3 magnetic field data is used in this study. Individual subintervals of this data, ranging from 15 hours to 15.6 days comprise the ensemble. The sole condition for including each subinterval in the averages is the degree to which it represents a weakly time-stationary process. Averages obtained by this method are appropriate for a turbulence description of the interplanetary medium. The ensemble average correlation length obtained from all subintervals is found to be 4.9 x 10 to the 11th cm. The average value of the variances of the magnetic field components are in the approximate ratio 8:9:10, where the third component is the local mean field direction. The correlation lengths and variances are found to have a systematic variation with subinterval duration, reflecting the important role of low-frequency fluctuations in the interplanetary medium.
File Size	20010016
Page Count	49
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19850019472
Archival Resource Key	ark:/13960/t57d7rp63
Language	English
Publisher Date	1985-04-01
Access Restriction	Open
Subject Keyword	Astrophysics Interplanetary Medium Correlation Magnetohydrodynamic Turbulence Variability Magnetohydrodynamic Flow Solar Wind International Sun Earth Explorers Interplanetary Magnetic Fields Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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