Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Print: 0040-2508
ISSN Online: 1943-6009

Volumes:
Volume 78, 2019 Volume 77, 2018 Volume 76, 2017 Volume 75, 2016 Volume 74, 2015 Volume 73, 2014 Volume 72, 2013 Volume 71, 2012 Volume 70, 2011 Volume 69, 2010 Volume 68, 2009 Volume 67, 2008 Volume 66, 2007 Volume 65, 2006 Volume 64, 2005 Volume 63, 2005 Volume 62, 2004 Volume 61, 2004 Volume 60, 2003 Volume 59, 2003 Volume 58, 2002 Volume 57, 2002 Volume 56, 2001 Volume 55, 2001 Volume 54, 2000 Volume 53, 1999 Volume 52, 1998 Volume 51, 1997

Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v74.i11.60
pages 1025-1038

DISTURBANCES OF LOWER IONOSPHERE ABOVE CENTER OF EARTHQUAKE AND ANOMALY IN THE GLOBAL ELECTRO-MAGNETIC RESONANCE SIGNAL - PART 1: MODELS OF IONOSPHERE

A. P. Nickolaenko
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
Masashi Hayakawa
Hayakawa Institute of Seismo Electromagnetics Co. Ltd.(Hi-SEM), The University of Electro-Communications (UEC) Alliance Center #521, Advanced & Wireless and Communications Research Center, UEC, Chofu, Tokyo, 182-8585, Japan

ABSTRACT

We model an effect on the Schumann resonance signal recorded in Japan of the ionosphere non-uniformity centered above the earthquake at Taiwan. Changes in the resonance spectrum occur due to interference of the direct radio wave with one reflected from the ionosphere modification above the earthquake. The first part addresses the typical models of ELF radio propagation constant and connects this with the vertical profile of atmospheric conductivity. The profile with a knee is analyzed, which is widely used for modeling the Schumann resonance. The four models are included used in literature for obtaining the frequency dependence of complex propagation constant of ELF radio waves. It is assumed that the pre-seismic and seismic activity locally reduces the height of the lower-boundary of the ionosphere above the earthquake. The maximum reduction reaches 20 km, and the symmetric perturbation is described along the radius by the Gauss curve of the scale of 1000 km.


Articles with similar content:

ON THE "TREE" VERTICAL ELECTRIC ELF ANTENNA
Telecommunications and Radio Engineering, Vol.76, 2017, issue 2
A. P. Nickolaenko, E. A. Velichko
DISTURBANCES OF LOWER IONOSPHERE ABOVE THE CENTER OF EARTHQUAKE AND ANOMALY IN THE GLOBAL ELECTROMAGNETIC RESONANCE SIGNAL. PART 2. ANOMALIES IN THE POWER SPECTRA
Telecommunications and Radio Engineering, Vol.74, 2015, issue 12
A. P. Nickolaenko, Masashi Hayakawa
SHIFT OF ANTIPODE MAXIMUM OF ELECTRIC FIELD IN THE EARTH − IONOSPHERE CAVITY BY THE DAY − NIGHT NON-UNIFORMITY
Telecommunications and Radio Engineering, Vol.76, 2017, issue 15
Yu. P. Galuk, A. P. Nickolaenko, Masashi Hayakawa
VERTICAL PROFILE OF ATMOSPHERIC CONDUCTIVITY CORRESPONDING TO SCHUMANN RESONANCE PARAMETERS
Telecommunications and Radio Engineering, Vol.74, 2015, issue 16
Yu. P. Galuk, A. P. Nickolaenko, Masashi Hayakawa
DEVIATIONS OF SOURCE BEARING IN THE EARTH–IONOSPHERE CAVITY WITH THE DAY–NIGHT NON-UNIFORMITY
Telecommunications and Radio Engineering, Vol.77, 2018, issue 11
Yu. P. Galuk, A. P. Nickolaenko, Masashi Hayakawa