Yu. A. Kopytenko

Research Field

The results of the study of the influence of the deep factor on the process of melting of the ice cover of the Arctic Ocean and the formation of dangerous natural phenomena are presented. The peculiarities of the structure of the earth’s crust contributing to the ice destruction are visualized based on the interpretation of anomalies of the magnetic field and gravity. Density and magnetic sections of the bottom structures are constructed taking into account seismic and seismological data. Two-dimensional density calculations of the Arctic crust density have been performed to detect fluid-saturated layers. Analysis of satellite observations of ice condition together with interpretation of gravity and magnetic data made it possible to identify natural phenomena of endogenous origin, caused by influence of thermo fluid flows of the earth’s crust. The study of annual and seasonal changes in the thickness of multiyear ice over the period 2007–2020 has shown that a decisive role in the thawing process is played by fluid-supplying channels of deep-seated fault zones. The role of an endogenous factor in the destruction of ice of different ages and in the emergence of dangerous phenomena in the areas of hydrate development has been revealed. This makes it possible to predict the localization of zones of variability in the thickness of multiyear ice, the nature of the destruction of its edges and reduce the risks of navigation.

Lead (geology)

10.31431/1816-5524-2020-4-48-49-63

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Citations (3)

Coastal Effect in the Horizontal Components of the Electric Field

Geomagnetism and Aeronomy (2023)

V. S. Ismagilov Yu. A. Kopytenko M. S. Petrishchev Pavel Sergushin A. V. Petlenko

10.1134/s0016793223600133

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Citations (0)

Application of Natural Electromagnetic Fields in the Search for Deep Polarized Objects

Doklady Earth Sciences (2019)

К. М. Ермохин Yu. A. Kopytenko M. S. Petrishchev А. Л. Собисевич Pavel Sergushin

Continuation

Basis (linear algebra)

Induced polarization

10.1134/s1028334x19030103

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Citations (0)

Gradients and phase velocities of ULF magnetic disturbances (F = 0.1 - 0.4 Hz) before and during strong earthquakes in 2003 year at Bosso Peninsula (Japan)

Yu. A. Kopytenko V. Ismaguilov Katsumi Hattori Masashi Hayakawa

Measurements of ULF EM variations (T = 1-1000 s) were carried out in Japan before and during a seismically active period in 2003. Three of the same type 3-component high-sensitivity torsion magnetometers, MVC-2DS, were located at Bosso peninsula at the vertices of a triangle at a distance 4-5 km from each other (a magnetic gradiometer). The magnetic gradiometer gives an opportunity to construct gradient and phase velocity vectors of the ULF magnetic disturbances. The gradient vectors are usually directed to the source of the magnetic disturbances. The phase velocity vectors usually have the opposite direction. Seismic activity was observed in this region during the whole year. We observed anomalous behavior of the gradients and phase velocities before strong earthquakes.

Peninsula

10.1109/aprasc.2004.1422552

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Gradients and phase velocities of ULF geomagnetic disturbances used to determine the source of an impending strong earthquake

Geomagnetism and Aeronomy (2006)

V. Ismaguilov Yu. A. Kopytenko Katsumi Hattori Masashi Hayakawa

Phase velocity

10.1134/s0016793206030157

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Citations (5)

Fine structure of Pi2-type geomagnetic pulsations