On the near-hourly hidden periodicity of earthquakes

Guglielmi, A. V.; Зотов, О. Д.

doi:10.1134/s1069351313010047

Cited by 14 publications

(5 citation statements)

References 5 publications

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“…It was noticed that the time delay of the strongest aftershock (with the magnitude M = 7.2) is approximately equal to the travel time of the surface wave around the world (it is about 3 h). This suggested that the round-trip seismic echo of the mainshock could have been the trigger that initiated this strong aftershock [Guglielmi et al, 2013]. Physically, everything here is quite transparent (Fig.…”

Section: Round-the-world Seismic Echo As a Trigger Of Mainshockmentioning

confidence: 85%

“…Following Guglielmi et al (2013), we consider the endogenous and exogenous triggers in the frame of the fold catastrophe according to Thom's list of elementary catastrophes [Thom, 1976], or A 2 catastrophe according to Arnold's list [Arnold, 1992]. The potential function is…”

Section: Endogenous and Exogenous Triggersmentioning

confidence: 99%

“…The long-term study revealed signs of the strictly periodic permanent influence of the technosphere on the seismic activity [Zotov, 2007;. The modulation of seismicity under the action of spheroidal oscillations of the Earth is also strictly periodic Guglielmi et al, 2013].…”

Section: The Foreshock As a Trigger Of Some Aftershockmentioning

confidence: 99%

“…Apparently, the echo delay time varies within 2.5 -3 h depending on the frequency and type of the seismic waves which are forming the echo. It was noted that the echo of the mainshock leads to an activation of aftershocks [Guglielmi et al, 2013]. The effect is manifested in 2.5 -3 h after the mainshock.…”

Section: The Foreshock As a Trigger Of Some Aftershockmentioning

confidence: 99%

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Foreshocks and aftershocks of strong earthquakes in the light of catastrophe theory

Guglielmi¹

2015

Успехи физических наук

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It is useful to consider the earthquakes in terms of catastrophe theory. In the paper, we illustrate this statement by analysis foreshocks preceding the strong earthquakes. We focused on the so-called catastrophe flags, and on the triggers that cause the critical transitions. The analysis shows a sharp increase of foreshock activity 3 h before the mainshock. This result is reminiscent of the well-known activation of the ULF magnetic precursors of earthquakes. Furthermore, we found that the characteristic frequency of foreshock sequence decreases a few hours before the mainshock, which is consistent with a prediction of the catastrophe theory. Finally, the analysis testifies that the strong foreshocks seems may be triggers of mainshocks. The idea is that the surface waves propagating outwards from the foreshock return back to the vicinity of the epicenter after having made a complete revolution around the Earth and induce there the mainshock.

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Section: Round-the-world Seismic Echo As a Trigger Of Mainshockmentioning

confidence: 85%

Section: Endogenous and Exogenous Triggersmentioning

confidence: 99%

Section: The Foreshock As a Trigger Of Some Aftershockmentioning

confidence: 99%

Section: The Foreshock As a Trigger Of Some Aftershockmentioning

confidence: 99%

See 2 more Smart Citations

Foreshocks and aftershocks of strong earthquakes in the light of catastrophe theory

Guglielmi¹

2015

Успехи физических наук

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“…In the lower frequency range of periods (from 15 min to several days), the researchers focus their main attention on studying the physics of origin, development and transformation of oscillations and waves, caused by: 1) Eigen oscillations of the Earth (Bullen, 1975;Park et al, 2008;Sobolev, 2013); 2) tidal processes of the atmosphere, hydrosphere and lithosphere; 3) eigen oscillations of certain bays, gulfs, seas and oceans (Dolgikh et al, 2011); 4) largescale atmospheric processes (Shved et al, 2013) and anthropogenic processes (Guglielmi and Zotov, 2013) It was shown in (Shved et al, 2013) that many oscillations, recorded by vertical seismometers, gravimeters, strainmeters, and tiltmeters are caused by the above motions-atmospheric thermal tide harmonics, eigen oscillations of the atmosphere, Madden-Julian oscillation in the atmosphere-ocean system, atmospheric planetary Rossby waves.…”

Section: Introductionmentioning

confidence: 99%

Inter-geosphere interaction in the infrasonic range

Dolgikh,

Budrin,

Dolgikh

et al. 2023

Front. Earth Sci.

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On the basis of experimental data from laser strainmeters, a laser nanobarograph, and a laser meter of hydrosphere pressure variations, we studied inter-geosphere interaction in microseismic range (2–20 s) and in minute range (4–17 min). We established general patterns of transformation of the Earth’s crust upper layer oscillations into atmospheric oscillations, and atmospheric oscillations—into oscillations of the Earth’s crust upper layer in the specified ranges. Besides, we show that transformation coefficient has seasonal dependence, associated with different elastic characteristics of the Earth’s crust upper layer in winter and summer due to negative winter temperatures and high positive summer temperatures, and also different moisture saturation of the soils.

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Structure of the Aftershock Sequences

Žalohar¹

2018

Developments in Structural Geology and Tectonics

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On the near-hourly hidden periodicity of earthquakes

Cited by 14 publications

References 5 publications

Foreshocks and aftershocks of strong earthquakes in the light of catastrophe theory

Foreshocks and aftershocks of strong earthquakes in the light of catastrophe theory

Inter-geosphere interaction in the infrasonic range

Structure of the Aftershock Sequences

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