Substorm probabilities are best predicted from solar wind speed
نویسندگان
چکیده
منابع مشابه
Statistical study of the substorm onset: its dependence on solar wind parameters and solar illumination
Based on 1829 well-defined substorm onsets in the Northern Hemisphere, observed during a 2-year period by the FUV Imager on board the IMAGE spacecraft, a statistical study is performed. From the combination of solar wind parameter observations by ACE and magnetic field observations by the low altitude satellite CHAMP, the location of auroral breakups in response to solar illumination and solar ...
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During substorm growth phases, magnetic reconnection at the magnetopause extracts ∼1015 J from the solar wind which is then stored in the magnetotail lobes. Plasma sheet pressure increases to balance magnetic flux density increases in the lobes. Here we examine plasma sheet pressure, density, and temperature during substorm growth phases using 9 years of Cluster data (>316,000 data points). We ...
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[1] Global auroral images are used to investigate how specific types of solar wind change relate to the resulting type of auroral-region disturbance, with the goal of determining fundamental response types. For not strongly southward IMF conditions (Bz ^ 5 nT), we find that IMF changes that are expected to reduce the convection electric field after^30 min of negative IMF Bz cause typical substo...
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[1] The relation between substorm occurrences, energetic particle injections, and HighIntensity Long-Duration Continuous AE Activity (HILDCAA) events has been an issue. To understand their relationship, we use global auroral images from the Wideband Imaging Camera (WIC) on the Imager for Magnetopause-to-Aurora Global Exploration (IMAGE) spacecraft to investigate auroral activity near the times ...
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ژورنال
عنوان ژورنال: Journal of Atmospheric and Solar-Terrestrial Physics
سال: 2016
ISSN: 1364-6826
DOI: 10.1016/j.jastp.2016.04.019