Shock overshoots revisited

Details Shock overshoots revisited Shock overshoots revisited

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....9213661m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Dec. 1, 1987, p. 13661-13665.

Physics

23

Bow Waves, Ion Cyclotron Radiation, Mach Number, Magnetometers, Shock Waves, Solar Wind, Collisionless Plasmas, High Resolution, International Sun Earth Explorers, Low Frequencies

Scientific paper

The ISEE 1 and 2 magnetometer and solar wind data for about 65 quasi-perpendicular bow shocks were used to investigate the role played by low-frequency turbulence in the determination of magnetic field overshoots in collisionless shock waves. Overshoots calculated from both high-resolution data and data averaged to eliminate the effects of turbulence exhibited similar behavior, but the overshoots calculated from the averaged data were generally lower by a factor of 2. Moreover, the size of overshoots calculated from the high-resolution data increased much more strongly with Mach number than that of overshoots calculated from averaged data. The difference between overshoots measured by the two sets of data was generally consistent with the presence of a component of overshoot magnitude due to low-frequecy turbulence.

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