Open AccessEffectiveness Criteria for Methods of Identifying Ionospheric Earthquake Precursors by Parameters of a Sporadic E Layer and Regular F2 Layer
Author(s) -
L. P. Korsunova,
V. V. Hegai
Publication year - 2015
Publication title -
journal of astronomy and space sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.273
H-Index - 11
eISSN - 2093-5587
pISSN - 2093-1409
DOI - 10.5140/jass.2015.32.2.137
Subject(s) - ionosphere , epicenter , depth sounding , sporadic e propagation , geology , magnitude (astronomy) , seismology , crust , blanketing , geodesy , geophysics , physics , stars , oceanography , astronomy
The results of the study of ionospheric variations in the summer months of 1998-2002 at an ionospheric station of vertical\udsounding "Petropavlovsk-Kamchatsky" are presented. Anomalous variations of virtual sporadic-E height (h'Es), Es\udblanketing frequency (fbEs), and the critical frequency of the ionospheric F2 layer (foF2) (which can be attributed to the\udpossible earthquake precursors) are selected. The high efficiency of the selection of ionospheric earthquake precursors\udbased on the several parameters of Es and F2 layers is shown. The empirical dependence, which reflects the connection\udbetween the lead-time of the earthquake moment, the distance to the epicenter from the observation point, and the\udmagnitude of the earthquake are obtained. This empirical dependence is consistent with the results of the detection of\udearthquake precursors by measuring the physical parameters of the Earth's crust in the same region