Patterns in the daily periodicity of low magnitude seismicity in Kamchatka

Pleiades Publishing Ltd - Tập 5 - Trang 129-143 - 2011
V. A. Gavrilov1, V. I. Zhuravlev2, Yu. V. Morozova1
1Institute of Volcanology and Seismology, Far East Division, Russian Academy of Sciences, Petropavlovsk-Kamchatskii, Russia
2Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia

Tóm tắt

A daily periodicity in small (K ≤ 8. 0) Kamchatka earthquakes has been detected, with the maximum occurring during the nighttime. The effect was not observed throughout the area of study, but only in several zones. We show that the results are not affected by human and weather factors. A hypothesis is put forward to explain the physical causes of the effect, viz., that the daily periodicity of small earthquakes could be due to natural VLF electromagnetic radiation acting on the geologic medium. It is pointed out that the effect is related to the previously identified effect of natural electromagnetic radiation modulating the intensity of geoacoustic emission from rocks.

Tài liệu tham khảo

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