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Real-time simulation of the geoelectric field spatiotemporal evolution due to geomagnetic disturbances
  • Elena Marshalko,
  • Mikhail Kruglyakov,
  • Alexey Kuvshinov
Elena Marshalko
Finnish Meteorological Institute

Corresponding Author:[email protected]

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Mikhail Kruglyakov
University of Otago
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Alexey Kuvshinov
Institute of Geophysics, ETH Zurich
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We present a methodology that allows real-time simulation of the geoelectric field (GEF) spatiotemporal evolution in a given 3-D conductivity model of the Earth based on continuously augmented inducing source data. The presented concept is validated using Fennoscandia as a test region. The choice of Fennoscandia is motivated by several reasons. First, it is a high latitude region, where the GEF is expected to be particularly large. Second, there exists a 3-D ground electrical conductivity model of the region. Third, the regional magnetometer network, IMAGE, allows us to build a realistic model of the source for a given geomagnetic disturbance. Taking the 7-8 September 2017 geomagnetic storm as a space weather event, we show that real-time high-resolution 3-D modeling of the GEF is feasible and requires only a few tens of seconds.