Abstract
The aim of this paper is to examine the anomalous variations of the critical frequency (foF2), total electron content (TEC), and foEs parameters before earthquake occurred on 1 April 2014 near Iquique Chile (M = 8.2) and event on 25 October 2013 in Japan (M = 7.1). Using the bound method we analyzed the variations of foF2, TEC, foEs and NmF2 parameters. The anomalous variations in foF2, TEC, foEs and NmF2 parameters observed 1 day, 15 days, 4 days and 1 day prior to Chile event and anomalous variations in foF2, TEC and foEs observed 3 days, 3 days and 2 days prior to earthquake event of Japan. This is the e-book version of the article, published in Russian Journal of Earth Sciences (doi:10.2205/2016ES000564). It is generated from the original source file using LaTeX’s ebook.cls class.
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