3D Modeling of Geomagnetically Induced Currents in Sweden—Validation and Extreme Event Analysis
نویسندگان
چکیده
Rosenqvist and Hall (2019), https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018SW002084 developed a proof-of-concept modeling capability that incorporates detailed 3D structure of Earth's electrical conductivity in geomagnetically induced current estimation procedure (GIC-SMAP). The model was verified based on GIC measurements northern Sweden. study showed southern Sweden is exposed to stronger electric fields due combined effect low crustal the influence surrounding coast. This aims at further verifying this region. power line west coast are utilized. location transmission selected include effects ocean-land interface investigate importance using induction methods. used quantify hazard severe GICs particular by historic recordings strong geomagnetic disturbances. To worst-case scenario calculated from modeled magnetic disturbances Space Weather Modeling Framework estimates for an idealized extreme interplanetary coronal mass ejection. observed estimated GIC-SMAP good agreement. In contrast, 1D methods underestimate about 50%. studied exceed 100 A one 14 historical storm intervals. peak during sudden impulse phase “perfect” exceeds 300 but depends locality station as cloud hits Earth.
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ژورنال
عنوان ژورنال: Space Weather-the International Journal of Research and Applications
سال: 2022
ISSN: ['1542-7390']
DOI: https://doi.org/10.1029/2021sw002988