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On the feasibility of real-time mapping of the geoelectric field across North America

Open-File Report 2018-1043
By: , , , , , and 
https://doi.org/10.3133/ofr20181043

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Abstract

A review is given of the present feasibility for accurately mapping geoelectric fields across North America in near-realtime by modeling geomagnetic monitoring and magnetotelluric survey data. Should this capability be successfully developed, it could inform utility companies of magnetic-storm interference on electric-power-grid systems. That real-time mapping of geoelectric fields is a challenge is reflective of (1) the spatiotemporal complexity of geomagnetic variation, especially during magnetic storms, (2) the sparse distribution of ground-based geomagnetic monitoring stations that report data in realtime, (3) the spatial complexity of three-dimensional solid-Earth impedance, and (4) the geographically incomplete state of continental-scale magnetotelluric surveys.

Suggested Citation

Love, J.J., Rigler, E.J., Kelbert, Anna, Finn, C.A., Bedrosian, P.A., and Balch, C.C., 2018, On the feasibility of real-time mapping of the geoelectric field across North America: U.S. Geological Survey Open-File Report 2018-1043, 16 p., https://doi.org/10.3133/ofr20181043.

ISSN: 2331-1258 (online)

Table of Contents

  • Acknowledgments
  • Abstract
  • Introduction
  • Length and Time Scales
  • Motivation for Parameterized Induction
  • Geomagnetic Monitoring
  • Geomagnetic Variation
  • Mapping Geomagnetic Variation
  • Solid Earth Electrical Conductivity and Diffusion
  • Magnetotelluric Surveys
  • Impedance and Models of Earth Conductivity
  • Calculation of Geoelectric Fields from Earth Impedance
  • Realistic 3D Versus Simplistic 1D Models of Earth Conductivity
  • Interpolation and Validation of Geoelectric Field Estimates
  • Implementation
  • Applications
  • Gap Summary
  • References Cited
Publication type Report
Publication Subtype USGS Numbered Series
Title On the feasibility of real-time mapping of the geoelectric field across North America
Series title Open-File Report
Series number 2018-1043
DOI 10.3133/ofr20181043
Publication Date June 08, 2018
Year Published 2018
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Geologic Hazards Science Center
Description v, 16 p.
Online Only (Y/N) Y
Additional publication details