On the difference in the rise times of the two SES electric field components

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概要

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• The study of low frequency signal transmission in conductive media, reveals that the electric and magnetic fields follow diffusion type equations. In a previous paper (Varotsos et al.1)) experimental evidence was forwarded that for epicentral distances of the order of 100 km, the SES electric field variations precede those of the magnetic ones by a time of the order of 1sec. In the present paper, we present evidence that this peculiarity still pertains (but to a smaller extent), when studying the differences in the components of the electric field. This cannot be probably observed in the scale of laboratory measurements, lying usually within the error bars of the current experimental facilities. A tentative theoretical justification, termed as τ-approximation, is presented which accounts for the measurements of electric field components. The present findings can provide a unique tool for the discrimination between remote and nearby sources by using data from electric measurements alone. (Communicated by Seiya UYEDA, M.J.A.)

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著者

• Varotsos Panayiotis

  Solid Earth Physics Institute University Of Athens

• SKORDAS Efthimios

  Solid Earth Physics Institute, University of Athens

• SARLIS Nicholas

  Solid State Section, Physics Department, University of Athens

• VAROTSOS Panayiotis

  Solid State Section, Physics Department, University of Athens

• SKORDAS Efthimios

  Solid Earth Physics Institute, Physics Department, University of Athens

• SARLIS Nicholas

  Solid State Section and Solid Earth Physics Institute, Physics Department, University of Athens

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