Estimating geoelectric fields for geoelectric hazard assessment : an examination of data and models within complex physiographic zones
During magnetic storms, time-varying geomagnetic fields induce geoelectric fields at the surface that produce geomagnetically induced currents (GICs) within power transmission systems. These GICs can permanently damage these systems, thus motivating research to understand how geoelectric fields behave during storm events. Geomagnetic field data obtained through the INTERMAGNET program are convolved with EarthScope USArray magnetotelluric impedances and impedances collected by Helmholtz Centre for Ocean Research Kiel (GEOMAR), FU Berlin, and GFZ Potsdam to estimate geoelectric variations during ...
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