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The Global Distribution of Stormtime Geomagnetic Hazards
  • Jesse Woodroffe
Jesse Woodroffe
National Aeronautics and Space Administration

Corresponding Author:jesse.woodroffe@gmail.com

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In this study, we present results from an investigation of the spatial variability of geomagnetic disturbances (GMDs) occurring during large (minimum Dst ≤ −100 nT) geomagnetic storms. Expanding on a previous study, we quantify the equatorward expansion of extreme GMDs as a function of KP and a new Dst-derived range index, the Disturbance Threshold Indicator (Dti). We then assess the largest GMDs as a function of MLT and MLAT during these storms for different levels of geomagnetic activity and empirically identify intrinsic patterns and systematic variations.