Physics
Scientific paper
Nov 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jgr...10124985s&link_type=abstract
Journal of Geophysical Research, Volume 101, Issue A11, p. 24985-24990
Physics
5
Magnetospheric Physics: Magnetosphere-Inner, Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Magnetospheric Physics: Ring Current, Magnetospheric Physics: Solar Wind/Magnetosphere Interactions
Scientific paper
During away sectors of the interplanetary magnetic field (IMF) around autumnal equinox and toward IMF sectors around vernal equinox, Dst underwent an average 4.0 nT peak-to-peak diurnal oscillation during a 13-year analysis period. Such an oscillation is predicted by the Russell-McPherron effect. The same effect is also found in a case study showing Dst diurnally oscillating through a period of sustained, recurrent geomagnetic activity. The time of minimum Dst lags the time of maximum energy coupling as given by the Russell-McPherron effect by between 0.5 and 1.5 hours, which in the framework of the Russell-McPherron coupling model gives a measure of the energy flow time from the solar wind to the ring current. This lag seems to be significantly shorter than expected for the Russell-McPherron effect used as a driver to an energy input and decay model of ring current dynamics. The results suggest that a mechanism besides ring current decay might operate on the diurnal timescale, such as a flow of ring current energy into the ionosphere via the region 2 currents.
Crooker N. N.
Siscoe George
No associations
LandOfFree
Diurnal oscillation of Dst: A manifestation of the Russell-McPherron effect 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 Diurnal oscillation of Dst: A manifestation of the Russell-McPherron effect, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diurnal oscillation of Dst: A manifestation of the Russell-McPherron effect will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1149808