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<p><span style="font-size: x-small; font-family: arial,helvetica,sans-serif;">Anomalous behavior of Very Low Frequency signals during the earthquake events</span></p>

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Title Statement <p><span style="font-size: x-small; font-family: arial,helvetica,sans-serif;">Anomalous behavior of Very Low Frequency signals during the earthquake events</span></p>
 
Added Entry - Uncontrolled Name Latha, Tirumala Raju Madhavi; Department of Physics, Anil Neerukonda Institute of Technology and Sciences, Visakhapatnam, A.P.
Naidu, Pyla Peddi; Department of Physics, Andhra University, Visakhapatnam, A.P
Rao, Dasu Nagarjuna Madhusudhana Rao; Department of Physics, G.V.P. College of Engineering for Women, Visakhapatnam
Devi, Malladi Indira; Department of Physics, Andhra University, Visakhapatnam, A.P
 
Uncontrolled Index Term Radio wave propagation: VLF propagation studies
Earth-ionosphere wave guide, VLF waves, D-region, Earthquakes
 
Summary, etc. <p>The Very Low Frequency (VLF) radio waves in the frequency range 3-30 kHz propagating in the earth ionosphere waveguide have their entire propagation path lying in the D-region. Since the phase velocity and height of reflection of these waves are very much sensitive to the D- region conductivity, these waves are used to study the D-region. In recent times, the amplitude and phase of these VLF waves have been studied for signatures of earthquakes occurring near their propagation path. In the present paper, the amplitude of the VLF waves transmitted from GQD (UK), GBZ (UK ) and TBB (Turkey) received in South France have been studied for fluctuations in morning and evening terminator timings during the earthquake events. For the event of Oct 12<sup>th</sup>, 2013(magnitude=6.6), it is observed that there are predominant fluctuations in the morning terminator timings in the pre-earthquake period.  The VLF day is observed to be long on the earthquake day of 12<sup>th</sup> Oct 2013.</p>
 
Publication, Distribution, Etc. Indian Journal of Radio & Space Physics (IJRSP)
2017-01-05 08:45:27
 
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http://op.niscair.res.in/index.php/IJRSP/article/view/6432
 
Data Source Entry Indian Journal of Radio & Space Physics (IJRSP); ##issue.vol## 43, ##issue.no## 6 (2014): Indian Journal of Radio & Space Physics
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJRSP/article/download/6432/16830
 
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