Zobrazeno 1 - 10
of 13
pro vyhledávání: '"D. G. Ryvkin"'
Publikováno v:
Climate of the Past, Vol 3, Iss 3, Pp 559-568 (2007)
We analyze 48 geothermal estimates of Pleistocene/Holocene warming amplitudes from various locations in Greenland, Europe, Arctic regions of Western Siberia, and Yakutia. The spatial distribution of these estimates exhibits two remarkable features. (
Externí odkaz:
https://doaj.org/article/e8736a30ce7b4898b88ba9118e21ed5a
Publikováno v:
Journal of Volcanology and Seismology. 16:377-384
Autor:
V. T. Belikov, D. G. Ryvkin
Publikováno v:
Physical Mesomechanics. 25:97-102
Publikováno v:
Izvestiya, Physics of the Solid Earth. 56:425-436
Laboratory experiments on monitoring the acoustic emission signals and time variations of volumetric activity of radon during uniaxial loading of a granite sample up to its fracture have been carried out. Based on the results of the experiments, the
Autor:
V. T. Belikov, D. G. Ryvkin
Publikováno v:
Journal of Applied Mechanics and Technical Physics. 60:578-585
A model of disk-like cracks based on amplitude-frequency spectra of acoustic emission, detected in the fracture of a concrete sample, is used to restore their size distribution function, as well as corresponding distributions of porosity and specific
Autor:
D. G. Ryvkin, V. T. Belikov
Publikováno v:
Physical Mesomechanics. 21:508-514
A system of equations for studying the fracture of solids has been formulated using a physico-mathematical model that describes the heat and mass transfer in heterogeneous media. The derived relations are used to analyze the energy balance equation a
Autor:
V. T. Belikov, D. G. Ryvkin
Publikováno v:
Acoustical Physics. 61:572-579
A quantitative physical model is proposed to describe acoustic emission processes. A technique is developed to reconstruct the structural characteristics of a material from its amplitude-frequency spectrum. Based on the obtained results, the experime
Publikováno v:
Russian Geology and Geophysics. 55:1219-1222
Experimental and theoretical research into the processes of radon emanation during failure of rocks has been carried out. We propose a physical model for the mechanisms of origin of anomalies of radon volume activity. Based on the obtained experiment
Autor:
V. T. Belikov, D. G. Ryvkin
Publikováno v:
Russian Journal of Nondestructive Testing. 47:343-351
Experimental data on radon concentration variations were quantitatively interpreted on the basis of a proposed quantitative model that describes the process of the formation of high-amplitude radon anomalies. As a result, relative time variations in
Autor:
V. T. Belikov, D. G. Ryvkin
Publikováno v:
Russian Journal of Nondestructive Testing. 46:729-734
The inverse problem of reconstructing the crack-size distribution function from the amplitude-frequency acoustic emission spectrum is considered. It is shown that this problem can be solved with the use of the models proposed in this work for the dep