MUD VOLCANO SHUGO, DEPTH STRUCTURE AND MECHANISMS OF ACTIVITY

Most mud volcanoes are located along large tectonic zones within the Alpine and Central Asian folded regions, the Pacific mobile belt and rift regions of the Atlantic and Indian oceans. One of the basic conditions for the functioning of the mobile crust of mud volcanic processes in the earth's crust is the location and creasing into folds of the complex of sedimentary formations. It is these geological conditions that determine the activity of many mud volcanoes within the Kerch-Taman mud volcanic province, including the mud volcano Shugo. Long-term studies of the phenomenon of mud volcanism, carried out under the guidance and with the direct participation of Academician Ye.F. Shnyukov created the fundamental foundations of a geological and geophysical approach to a deeper understanding of the conditions of formation and mechanisms of activity of the volcanoes of the Kerch and Taman Peninsulas. This work is devoted to the results of seismological and geoacoustic studies of the Shugo volcano, expanding our ideas about the features of the deep structure of the studied object and contributing to the further development of the ideas of the outstanding scientist, academician of the National Academy of Sciences of Ukraine Ye.F. Shnyukov

ERUPTION OF THE VOLCANO KILAUEA. SEISMICAGRAVITY PROCESSES AND GRAVITOMAGNETIC DISTURBANCES, FIXED AT THE VOLCANO ACTIVATION STAGE

An analysis is made of the developing eruption of the shield Kilauea volcano, which significantly influenced the natural environment of the Hawaiian archipelago. The main attention in the article is focused on seismic gravity processes caused by the transformation of large-scale rock formations in the structures of the Hawaiian plume that formed the archipelago. The intensification of seismic gravity processes in the area of volcanic construction contributed to the development of focal formations and, as a result, gave rise to disturbances in variations of the Earth's magnetic field. The seismic gravity process and gravitomagnetic disturbances were successfully recorded by the hardware complexes of the North Caucasus Geophysical Observatory of the IPE RAS at the stage of preparing a strong earthquake, the source of which was formed in the Kilauea volcanic structure. It was experimentally found that before the earthquake in the bowels of the volcanic structure of the erupting Kilauea volcano, separate large-scale geological structures began to form, responsible for the development of seismic gravity processes and gravitomagnetic disturbances, which preceded the main shock. The recorded instrumental prognostic effects appeared here several hours before the main blow. An analysis of the experimental data obtained by the hardware complexes of the North Caucasus Geophysical Observatory of the IPE RAS and the published representative scientific material reflecting the geodynamic processes in the area of the Kilauea volcanic structure allows us to make reasonable conclusions that the study of a separate class of seismic gravity processes today becomes a determining problem in geophysics, volcanology and geoecology. Observed processes and disturbances can be classified as short-term harbingers of a developing environmental disaster in the Hawaii archipelago

Förstärkning av energi och Q-faktor hos en ickelinjär resonator genom ökning av dess förluster

A phenomenon that is paradoxical at first sight is studied: an appropriately-organized energy outflow from a resonator cavity results not in the attenuation of nonlinear vibrations but in their noticeable enhancement. An increase in the resonator Q-factor and in the energy accumulated in it is well pronounced when the frequencies of the higher harmonics generated in a nonlinear medium are close to the natural frequencies of the resonator. An important example of a nonlinear system with the necessary properties is an acoustic resonator with selective losses.Det paradoxala beteendet att en resonators enegriinnehåll och Q-faktor kan öka när dess dämpning ökar beskrivs

Ickelinjärt pulssvar från ett skikt vid undersökning av små inhomogeniteter

Giant nonlinear respons are observed at acoustic irradiation of microscopic gas bubbles in liquids, cracks and fluid-filled pores in solids; and compressed contact of rough surfaces, and is used in diagnostics of materials of industrial and geological structures. Reconstruction of characteristics of a scattering inhomogeneity requires an analyses of complicated inverse problems. The problem of plane-wave incidence upon a layer is simple and serves a model for more complicated inhomogeneities; its response enables us to reconstruct the spectral composition and field structure of other nonlinear scatterers.Små materiella störningar i material ger stora ickelinjära effekter. Artikeln beskriver reflektion och transmission från ett allmänt ickelinjärt skikt för en akustisk puls

Ickelinjärt pulssvar från ett skikt vid undersökning av små inhomogeniteter

Giant nonlinear respons are observed at acoustic irradiation of microscopic gas bubbles in liquids, cracks and fluid-filled pores in solids; and compressed contact of rough surfaces, and is used in diagnostics of materials of industrial and geological structures. Reconstruction of characteristics of a scattering inhomogeneity requires an analyses of complicated inverse problems. The problem of plane-wave incidence upon a layer is simple and serves a model for more complicated inhomogeneities; its response enables us to reconstruct the spectral composition and field structure of other nonlinear scatterers.Små materiella störningar i material ger stora ickelinjära effekter. Artikeln beskriver reflektion och transmission från ett allmänt ickelinjärt skikt för en akustisk puls

Nonlinear response of a layer to pulse action in diagnostics of small inhomogenities

Giant nonlinear respons are observed at acoustic irradiation of microscopic gas bubbles in liquids, cracks and fluid-filled pores in solids; and compressed contact of rough surfaces, and is used in diagnostics of materials of industrial and geological structures. Reconstruction of characteristics of a scattering inhomogeneity requires an analyses of complicated inverse problems. The problem of plane-wave incidence upon a layer is simple and serves a model for more complicated inhomogeneities; its response enables us to reconstruct the spectral composition and field structure of other nonlinear scatterers