Physics
Scientific paper
Nov 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jgra..10911102h&link_type=abstract
Journal of Geophysical Research, Volume 109, Issue A11, CiteID A11102
Physics
7
Interplanetary Physics: Discontinuities, Interplanetary Physics: Interplanetary Magnetic Fields, Interplanetary Physics: Instruments And Techniques, Magnetospheric Physics: Magnetopause, Cusp, And Boundary Layers
Scientific paper
The minimum variance method (MVA) has been used for over 3 decades to analyze directional discontinuities in solar wind magnetic field data. We recount how MVA was formulated and show that it does not do what many expect. We demonstrate a robust alternative for distinguishing tangential discontinuities from rotational discontinuities (RDs). We also stress that averaging magnetic field data to time resolutions of a minute or more (common with National Space Science Data Center data sets) obliterates RDs.
Cloutier Paul A.
Espley Jared R.
Hausman B. A.
Michel Curtis F.
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