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

Understanding the deep underground structureof the Mount Karabetov mud volcano

The success of recently developed geological and geophysical methods and technologies for monitoring of mud volcanoes in the Kerch-Taman region is eventually based on the fundamental scientific results accumulated at the turn of the century under the overall leadership of the Academician E.F. Shnyukov. The results of geological and geophysical studies of the Mount Karabetov mud volcano (Taman Peninsula) featuring the passive seismoacoustic sounding method are presented. New data on the spatial configuration of subvertical fluid-saturated structures associated with the volcano's feeding system were obtained. Subsequent common interpretation of the geophysical data and the results of the structural-geomorphologic observations allowed one to formulate a consistent hypothesis on the possible deep mechanism of mud volcanic activity responsible for the mostly paroxysmal nature of eruptions of the Mount Karabetov

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