Physics
Scientific paper
Nov 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3621101f&link_type=abstract
Geophysical Research Letters, Volume 36, Issue 21, CiteID L21101
Physics
6
Magnetospheric Physics: Substorms, Magnetospheric Physics: Solar Wind/Magnetosphere Interactions, Magnetospheric Physics: Numerical Modeling
Scientific paper
Superposed epoch analyses have shown that, on average, the interplanetary magnetic field (IMF) turns northward close to substorm onset. This has been commonly accepted as evidence for the substorm onset being triggered by a rapid northward turning of the IMF. Here we show that the tendency arises in any superposed epoch analysis of the IMF in which event onset is biased to occur for southward IMF, irrespective of a coincident rapid northward turning of the IMF. The overall IMF variation found in the largest superposed epoch analysis of this kind is also well reproduced using a Minimal Substorm Model in which substorm onsets are determined without the requirement of a northward IMF turning trigger. We discuss the explanation underlying these results and conclude that there is no conclusive evidence in favour of the hypothesis that substorm onsets are triggered by a rapid northward turning of the IMF.
Freeman Mervyn. P.
Morley Steven K.
No associations
LandOfFree
No evidence for externally triggered substorms based on superposed epoch analysis of IMF Bz 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 No evidence for externally triggered substorms based on superposed epoch analysis of IMF Bz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and No evidence for externally triggered substorms based on superposed epoch analysis of IMF Bz will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1264625