Please use this identifier to cite or link to this item:
Title: Investigation of Ionospheric Anomalies in Relation to Earthquakes during High and Low Solar Activity Periods in Years 2002 and 2021
Authors: Köz, İrem
Doğanalp, Serkan
Keywords: Generation
Issue Date: 2023
Publisher: Maik Nauka/Interperiodica/Springer
Abstract: The interaction between lithosphere and atmosphere allows us to recognize the effects of tectonic activity on the ionosphere layer. This indicates that TEC (Total Electron Content) anomalies in the ionosphere can be a precursor to earthquakes. Within the scope of this study, ionosphere changes in pre- and post- earthquake time series of two earthquakes with magnitudes of 7.9 Mw at solar maximum times which is in solar cycle 23, 2002 and 8.2 Mw at solar minimum times which is in solar cycle 25, 2021 were investigated. TEC changes in ionosphere were calculated using GPS (Global Positioning System) data of IGS (International GNSS Service) stations located within and outside the earthquake preparation area. Anomaly values in TEC changes were computed by applying the moving median method based on the interquartile range to time series. To determine whether the anomalies were caused by space weather conditions, the indices of solar activity (F10.7), geomagnetic storm (Kp), geomagnetic field (B) and disturbance storm time (Dst) were evaluated, and correlation coefficients (?) between them and TEC anomalies were calculated. As a result of the study, it was observed that TEC values and anomalies in the earthquake which occurred during the solar maximum time were quite higher than those in the earthquake which took place during the solar minimum time. TEC anomalies which happened independently of space weather conditions prior to earthquakes were accepted as earthquake precursors.
ISSN: 0016-7932
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

Files in This Item:
File SizeFormat 
  Until 2030-01-01
1.96 MBAdobe PDFView/Open    Request a copy
Show full item record

CORE Recommender

Page view(s)

checked on Dec 4, 2023

Google ScholarTM



Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.