Solar wind variations and geomagnetic storms - A study of individual storms based on high time resolution ISEE 3 data

Details Solar wind variations and geomagnetic storms - A study of individual storms based on high time resolution ISEE 3 data Solar wind variations and geomagnetic storms - A study of individual storms based on high time resolution ISEE 3 data

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90..325a&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, Jan. 1, 1985, p. 325-340. Research sponsored by the U.S. Department o

Physics

40

Energy Transfer, Geomagnetic Tail, Magnetic Storms, Magnetospheric Instability, Solar Terrestrial Interactions, Solar Wind, Energy Dissipation, Transfer Functions

Scientific paper

Two independent methods are employed to determine the relationship between the parameter epsilon and total energy dissipation rate of the magnetosphere U sub T by selecting disturbed periods from the same data d set used by Baker et al. (1983). Specifically, four storms are examined in detail, since the accuracy of estimating U sub T is significantly improved during disturbed periods. The first method assumes that U sub T = M sub A exp.2- alpha(epsilon) where M sub A is the Alfven Mach number and alpha varies with time. The second method considers a linear, time-invariant dynamic system with epsilon as input and U sub T as output. This means that U sub T = W(asterisk)epsilon where asterisk is the convolution and W is a transfer function characteristic of the system. It is found that alpha values fluctuate mainly between 0 and -0.25. The transfer function analysis indicates that W often resembles a delta-function or a narrow rectangular impulse. Both results give the same implication (namely that U sub T is approximately equal to epsilon) and thus are consistent with the view that the magnetosphere is primarily a directly driven system during disturbed periods.

Affiliated with

Also associated with

No associations

Rating

Solar wind variations and geomagnetic storms - A study of individual storms based on high time resolution ISEE 3 data does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Solar wind variations and geomagnetic storms - A study of individual storms based on high time resolution ISEE 3 data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar wind variations and geomagnetic storms - A study of individual storms based on high time resolution ISEE 3 data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-926920