Impact Angle Control of Local Intense dB/dt Variations During Shock‐Induced Substorms

  title={Impact Angle Control of Local Intense dB/dt Variations During Shock‐Induced Substorms},
  author={Denny M. Oliveira and James M. Weygand and Eftyhia Zesta and Chigomezyo M. Ngwira and Michael D. Hartinger and Zhonghua Xu and Barbara L. Giles and Daniel J. Gershman and Marcos V. D. Silveira and V{\'i}tor M. Souza},
  journal={Space Weather},
The impact of interplanetary shocks on the magnetosphere can trigger magnetic substorms that intensify auroral electrojet currents. These currents enhance ground magnetic field perturbations (dB/dt), which in turn generate geomagnetically induced currents (GICs) that can be detrimental to power transmission infrastructure. We perform a comparative study of dB/dt variations in response to two similarly strong shocks, but with one being nearly frontal and the other highly inclined. Multi… 
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