Multi-Site Transfer Function Approach for Real-Time Modeling of the Ground Electric Field Induced by Laterally-Nonuniform Ionospheric Source

We propose a novel approach to model the ground electric field (GEF) induced by laterally-nonuniform ionospheric sources in real time. The approach exploits the multi-site transfer function concept, continuous magnetic field measurements at multiple sites in the region of interest, and spatial modes...

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Bibliographic Details
Published in:Space Weather
Main Authors: Kruglyakov, Mikhail, Marshalko, Elena, Kuvshinov, Alexey, Smirnov, Maxim, Viljanen, Ari
Format: Article in Journal/Newspaper
Language:English
Published: Luleå tekniska universitet, Geovetenskap och miljöteknik 2023
Subjects:
Geophysics
Geofysik
New Zealand
Fennoscandia
Online Access:http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-102306
https://doi.org/10.1029/2023SW003621
Description
Summary:We propose a novel approach to model the ground electric field (GEF) induced by laterally-nonuniform ionospheric sources in real time. The approach exploits the multi-site transfer function concept, continuous magnetic field measurements at multiple sites in the region of interest, and spatial modes describing the ionospheric source. We compared the modeled GEFs with those measured at two locations in Fennoscandia and observed good agreement between modeled and measured GEF. Besides, we compared GEF-based geomagnetically induced current (GIC) with that measured at the Mantsala natural gas pipeline recording point and again observed remarkable agreement between modeled and measured GIC. Validerad;2023;Nivå 2;2023-11-15 (joosat); Funder: New Zealand Ministry of Business, Innovation, Employment (UOOX2002); ESA and EO Science for Society (4000109587); Academy of Finland (339329); License fulltext: CC BY

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