The application of dimensional analysis to the problem of solar wind-magnetosphere energy coupling

Details The application of dimensional analysis to the problem of solar wind-magnetosphere energy coupling The application of dimensional analysis to the problem of solar wind-magnetosphere energy coupling

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.217..157b&link_type=abstract

In ESA Achievements of the Intern. Magnetospheric Study (IMS) p 157-160 (SEE N85-24544 14-46)

Physics

1

Coupling Coefficients, Dimensional Analysis, Earth Magnetosphere, Solar Terrestrial Interactions, Solar Wind, International Magnetospheric Study, International Sun Earth Explorer 3, Interplanetary Magnetic Fields, Interplanetary Medium, Magnetohydrodynamics

Scientific paper

The constraints imposed by dimensional analysis are used to find how the solar wind-magnetosphere energy transfer rate depends upon interplanetary parameters. The analyses assume that only magnetohydrodynamic processes are important in controlling the rate of energy transfer. The study utilizes ISEE-3 solar wind observations, the AE index, and UT from three 10-day intervals during the International Magnetospheric Study. Simple linear regression and histogram techniques are used to find the value of the magnetohydrodynamic coupling exponent, alpha, which is consistent with observations of magnetospheric response. Once alpha is estimated, the form of the solar wind energy transfer rate is obtained by substitution into an equation of the interplanetary variables whose exponents depend upon alpha.

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