Methodology for time-domain estimation of storm time geoelectric fields using the 3-D magnetotelluric response tensors

Space Weather
By: , and 

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Abstract

Geoelectric fields at the Earth's surface caused by magnetic storms constitute a hazard to the operation of electric power grids and related infrastructure. The ability to estimate these geoelectric fields in close to real time and provide local predictions would better equip the industry to mitigate negative impacts on their operations. Here we report progress toward this goal: development of robust algorithms that convolve a magnetic storm time series with a frequency domain impedance for a realistic three-dimensional (3-D) Earth, to estimate the local, storm time geoelectric field. Both frequency domain and time domain approaches are presented and validated against storm time geoelectric field data measured in Japan. The methods are then compared in the context of a real-time application.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Methodology for time-domain estimation of storm time geoelectric fields using the 3-D magnetotelluric response tensors
Series title Space Weather
DOI 10.1002/2017SW001594
Volume 15
Issue 7
Year Published 2017
Language English
Publisher AGU
Contributing office(s) Geologic Hazards Science Center
Description 21 p.
First page 874
Last page 894