Physics
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.2224c&link_type=abstract
Journal of Geophysical Research, vol. 87, Apr. 1, 1982, p. 2224-2230.
Physics
89
Correlation, Interplanetary Magnetic Fields, Magnetic Measurement, Satellite Observation, Analysis Of Variance, Histograms, International Sun Earth Explorer 1, International Sun Earth Explorer 3
Scientific paper
Correlation variability between ISEE 1 and 3 IMF measurements is investigated, and factors governing the variability are discussed. About 200 two-hour periods when correlation was good, and 200 when correlation was poor, are examined, and both IMF variance and spacecraft separation distance in the plane perpendicular to the earth-sun line exert substantial control. The scale size of magnetic features is larger when variance is high, and abrupt changes in the correlation coefficient from poor to good or good to poor in adjacent two-hour intervals appear to be governed by the sense of change of IMF variance and vice versa. During periods of low variance, good correlations are most likely to occur when the distance between ISEE 1 and 3 perpendicular to the IMF is less than 20 earth radii.
Crooker Nancy U.
Russell Christopher T.
Siscoe George L.
Smith Edward. J.
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