Superposed epoch analysis of the ionospheric convection evolution during substorms: onset latitude dependence [PDF]
Annales Geophysicae, 2009 Using data from the Super Dual Auroral Radar Network (SuperDARN) we investigate the ionospheric convection response to magnetospheric substorms. Substorms were identified using the Far Ultraviolet (FUV) instrument on board the Imager for Magnetopause ...
A. Grocott +3 more
doaj +7 more sources
A superposed epoch analysis of auroral evolution during substorm growth, onset and recovery: open magnetic flux control of substorm intensity [PDF]
Annales Geophysicae, 2009 We perform two superposed epoch analyses of the auroral evolution during substorms using the FUV instrument on the Imager for Magnetopause-to-Aurora Global Explorer (IMAGE) spacecraft. The larger of the two studies includes nearly 2000 substorms.
S. E. Milan +8 more
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The influence of magnetospheric substorms on SuperDARN radar backscatter [PDF]
, 2008 The SuperDARN ionospheric radar network is a leading tool for investigating the near-Earth space environment. However, reductions in ionospheric backscatter have been reported during magnetospheric substorms.
Wild, James A., Grocott, A.
core +4 more sources
Superposed epoch analysis of the ionospheric convection evolution during substorms : IMF BY dependence [PDF]
, 2010 We present superposed epoch analyses of the average ionospheric convection response in the northern and southern hemispheres to magnetospheric substorms occurring under different orientations of the interplanetary magnetic field (IMF).
Wild, J.A. +5 more
core +5 more sources
A superposed epoch analysis of auroral evolution during substorms : local time of onset region [PDF]
, 2010 Previous workers have shown that the magnetic local time (MLT) of substorm onset depends on the prevailing east-west component of the interplanetary magnetic field (IMF). To investigate the influence of the onset MLT on the subsequent auroral response we
Hubert, B., Milan, S. E., Grocott, A.
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Substorms during the August 10-11 sawtooth event. [PDF]
, 2006 Sawtooth events have been identified at geosynchronous orbit as large-amplitude quasiperiodic (2–4 hour period) modulations of the energetic electron and ion fluxes.
Frank, L. A. +11 more
core +4 more sources
On the triggering of auroral substorms by northward turnings of the interplanetary magnetic field [PDF]
, 2009 Some studies over the last decade have indicated that the instability responsible for substorm expansion phase onset may require an external trigger such as a northward turning of the interplanetary magnetic field (IMF). Statisti- cal investigations have
Wild, J.A. +2 more
core +6 more sources
Observed Loss of Polar Mesospheric Ozone Following Substorm‐Driven Electron Precipitation
Geophysical Research Letters, 2023 Several drivers cause precipitation of energetic electrons into the atmosphere. While some of these drivers are accounted for in proxies of energetic electron precipitation (EEP) used in atmosphere and climate models, it is unclear to what extent the ...
Keeta Chapman‐Smith +4 more
doaj +1 more source
Statistical properties of substorms during different storm and solar cycle phases [PDF]
Annales Geophysicae, 2013 Substorm properties during different storm phases have been studied using an automated recognition of substorm and storm phases in the auroral electrojet (AL) and ring current (Dst) index data from 1995–2009.
N. Partamies +4 more
doaj +1 more source
Relationship Between Relativistic Electron Events Magnetic Storms, and Magnetic Substorms [PDF]
Journal of Astronomy and Space Sciences, 2003 This paper reports a statistical study on the relationship between relativistic electron events(REE), magnetic storms, and substorms. We have used magnetic storm events that occurred between 1996 and 1998, and have classified them into two groups, (i ...
Jung-A Hwang +3 more
doaj +1 more source