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

Open-File Report 2018-1043
By: , and 

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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

Additional publication details

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
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