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

Guglielmi, A. V.

doi:10.3367/ufnr.0185.201504f.0415

Cited by 11 publications

(4 citation statements)

References 49 publications

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“…Another type of deviations from the Omori law (1) arises due to the phenomenon of round-the-world seismic echo. We will not dwell on this, referring the interested reader to the papers [5,6].…”

Section: Discussionmentioning

confidence: 99%

Interpretation of the Omori law

Guglielmi

2016

Izv., Phys. Solid Earth

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Section: Discussionmentioning

confidence: 99%

Interpretation of the Omori law

Guglielmi

2016

Izv., Phys. Solid Earth

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“…This means that a pre-seismic phenomenon existed for the time variations of displacements and azimuth even during a few hours immediately before the 2011 Tohoku EQ. Guglielmi et al (2013) have recently studied the foreshocks of strong EQs in light of catastrophe theory. Their analysis indicates a sharp increase of foreshock activity three hours before the main shock, including our 2011 Tohoku EQ, which is consistent with our GPS results.…”

Section: Pre-seismic Movements Of the 2011 Tohoku Eqmentioning

confidence: 99%

On the precursors to the 2011 Tohoku earthquake: crustal movements and electromagnetic signatures

Kamiyama

Sugito

Kuse

et al. 2014

Geomatics, Natural Hazards and Risk

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We compare the precursory behaviour of crustal movements with electromagnetic signatures for the 2011 off the Pacific Coast of Tohoku earthquake. First, we present the Global Positioning System (GPS) data on the co-seismic variations and pre-seismic precursors (medium-term, short-term and imminent precursors). Then, we will review recently published results on electromagnetic precursors, including mainly short-term subionospheric very low frequency (VLF)6 LF propagation anomaly, ultralow frequency (ULF) magnetic field depression and ULF6 extremely low frequency (ELF) atmospheric radiation. Finally, we examine the relationship between the crustal movements and electromagnetic phenomena. We conclude that at least short-term electromagnetic precursors are closely correlated in time with the corresponding crustal movements. This seems to provide evidence on the link between lithospheric and electromagnetic processes. Some discussions will be given on the possible mechanism of this link.

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“…The possibility of the impact of surface and bulk seismic waves on stresses in the lithosphere is not excluded. It occurs near earthquakes and initiates the occurrence of a seismic hazard Z ′′ propagation chain reaction [33][34][35].…”

Section: Methods Of Research the Clustering Of Seismic Activity Localmentioning

confidence: 99%

Hierarchical Clustering of Seismic Activity Local Territories Globe

Tiutiunyk

Kalugin

Pysklakova

et al. 2019

EUREKA: Physics and Engineering

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In article, the interrelation between energy parameters of Globe moving in a system Sun-Earth-Moon has been established. It includes features of a seasonal energy condition of an internal core of Earth and the key energy parameters of tectonic activity of seismically dangerous local territories of the planet. These parameters have been systematized by means of a clustering method hierarchical. The mechanism of energy influence of core Earth fluctuations on variations of axial rotation speed of the Globe and level of seismic activity has been grounded. The phenomenon of a periodic oscillation of planet condition seismic and effect of asymmetric distribution of the emergency situations (ES) of tectonic origin on the Earth's surface has been established. For the first time, ranging of the seismically fissile local territories of the Globe in the parameters determining the level of seismic activity and ranges of magnitudes was carried out. Based on these results the effect of division of the seismically fissile local territories into three main clusters that characterized by rather high, average and low degrees of seismic activity was established. Join of the ranged seismically fissile local territories of the Globe permit to establish zones with various degree of seismic activity along the section of various geophysical plates. The results received in article are a basis for further carrying out complex assessment of interrelations between key parameters of moving Globe in a system Sun-Earth-Moon and key parameters of tectonic danger of the seismically fissile local territories of Earth. It is base for further increase in effectiveness of monitoring of origin tectonic emergency by development of neural network prognostic models.

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

Cited by 11 publications

References 49 publications

Interpretation of the Omori law

Interpretation of the Omori law

On the precursors to the 2011 Tohoku earthquake: crustal movements and electromagnetic signatures

Hierarchical Clustering of Seismic Activity Local Territories Globe

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