ELF radar system proposed for localized D-region ionospheric anomalies

Jamesina J. Simpson*, Allen Taflove

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

This letter proposes a novel extremely low frequency (ELF) radar for localized D-region (altitude < 95 km) ionospheric anomalies that have been generated by natural geophysical processes. The proposed system would use the former U.S. Navy Wisconsin Transmitting Facility as a distant well-characterized impulsive ELF source. Sample calculations that demonstrate how passive vertical E-field detectors could characterize ionospheric conductivity depressions of variable diameter located above Los Angeles are provided. These calculations have been obtained using our recently developed three-dimensional whole-Earth electromagnetic wave propagation model based upon the rigorous finite-difference time-domain solution of Maxwell's equations. A key potential application of the proposed ELF radar system is the detection of hypothesized ionospheric earthquake precursors.

Original languageEnglish (US)
Article number1715304
Pages (from-to)500-503
Number of pages4
JournalIEEE Geoscience and Remote Sensing Letters
Volume3
Issue number4
DOIs
StatePublished - Oct 2006

Funding

Manuscript received March 17, 2006; revised April 19, 2006. This work was supported by the Pittsburgh Supercomputing Center under Grant EAR050012P. The authors are with the Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL 60208 USA (e-mail: [email protected]). Digital Object Identifier 10.1109/LGRS.2006.878443

Keywords

  • Earthquakes
  • Extremely low frequency (ELF)
  • Finite difference time domain (FDTD)
  • Ionospheric disturbances
  • Radar
  • Remote sensing

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Electrical and Electronic Engineering

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