Details of the abstract

Title of paper Examination of geomagnetic data as precursors of the September 5, 2018 (MW = 6.6) and August 20, 2016 (MW = 6.0) earthquakes in Japan
List of authors Hamideh TAHERINIA, Shahrokh POURBEYRANVAND
Affiliation(s) International Institute of Earthquake Engineering and Seismology
Summary Earthquakes are one of the most devastating natural disasters, and their impact on human society, in terms of casualties and economic damage has been significant throughout history. Earthquake prediction can aid in preparing for this major event, and its purpose is to identify earthquake-prone areas and reduce their financial and human losses. Any parameter that changes before the earthquake in a way that one can predict the earthquake with a careful study of its variations is called a precursor. Recently, more attention has been paid to geophysical, geomagnetic, geoelectrical, and electromagnetic precursors. The term Tectonomagnetism has been used in this context which involves changes in the magnetic field associated with an earthquake. The effect of magnetic seismicity has been investigated by several researchers. This effect is quite evident from comparing simultaneous data of a geomagnetic network. In the present study, the geomagnetic data of three stations, obtained through INTERMAGNET, with a distance of less than 500 km to the September 5. 2018 and August 20, 2016, Japan earthquakes are investigated. The characteristic curves are obtained by, frequent over plotting of magnetic data per 24-hour time frames on each other, for three geomagnetic stations in Japan (MMB, KAK, KNY). All three components (Z, Y, X) or (Z, D, H) was processed in a period of one year. In order to increase the intensity and distinction of the anomalies observed before the earthquake in comparison with the original data, we tried to eliminate the effect of daily variation of the magnetic field on the geomagnetic records by this method.
Session Keyword 3.0 Exploration, Monitoring and Hazards
File upload 3.0_examination_of_geomagneti_taherinia.pdf
Back to list