Published in Izvestiya, Physics of the Solid Earth
AbstractCometary impacts on Earth, as comets themselves, especially aperiodic ones, have been much less studied compared to asteroids. Nevertheless, despite the rarity of such impacts, they occurred in the past and cannot be ruled out in the near future. Moreover, the impacts of interstellar and, in principle, even intergalactic objects with hyperb...
Published in Izvestiya, Physics of the Solid Earth
Abstract—The velocity structure of the lithosphere is studied beneath the Khibiny and Lovozero massifs in the northeastern part of the Baltic shield. The massifs belong to the world’s eight largest alkaline intrusions and are widely known for their unique mineralogy. The crustal and upper-mantle velocity structure beneath these two rock blocks is r...
Published in Izvestiya, Physics of the Solid Earth
Abstract—A comparative analysis is presented of the approaches and methods for estimating the energy of the sources of acoustic-gravity waves (AGW) in the Earth’s atmosphere from the records of these waves. A number of known relationships linking the parameters of the recorded infrasonic signals and the source energy are considered. A phenomenologi...
Published in Izvestiya, Physics of the Solid Earth
Abstract—Acoustic transmission data obtained in the laboratory experiment are used to identify stages of hydraulic fracture initiation, growth, and filling with a fracturing fluid. The laboratory setup allows for performing experiments with porous saturated samples made of artificial materials, with a diameter of 430 mm and height 70 mm. The model ...
Published in Izvestiya, Physics of the Solid Earth
Abstract—Deformation regimes of water-saturated reservoirs under dynamic impact are studied using groundwater-level monitoring by precision measurements. As a quasi-stationary factor responsible for background poroelastic groundwater-level fluctuations in the reservoir–well system, the Earth’s tides are considered. Hydrogeological responses to the ...
Published in Izvestiya, Physics of the Solid Earth
Abstract—Studying the spatiotemporal dynamics of the disturbances in the atmosphere, upper, and lower ionosphere requires integrated investigation of interrelated processes at different heights in the different solar-geophysical conditions. The radiophysical complex at the Geophysical observatory “Mikhnevo” of the Institute of Geosphere Dynamics of...
Published in Izvestiya, Physics of the Solid Earth
Abstract—The formation of impact craters on the Earth’s surface is accompanied by the effect of shock waves on rocks. The shock wave compression results in rocks heating up to the point of melting and evaporation during unloading. The direct mechanical action of shock compression and residual heating change the magnetic properties of rocks. Geophys...
Published in Izvestiya, Physics of the Solid Earth
Abstract—The spatial distribution of the triggered seismic events in mining conditions in the tectonically loaded rock masses is studied using the example of seismicity in the Khibiny Mountains. It is shown that the distribution of distances from the triggering to triggered events, on average, obeys the power-law with a parameter independent of the...
Published in Izvestiya, Physics of the Solid Earth
Abstract—In their paper published in Izvestiya, Physics of the Solid Earth, G.A. Sobolev et al. (2020) discussed the results of their study. Firstly, it is noted that the most important element of the magnetic storm affecting seismicity is the Pc5 geomagnetic pulsations. In the context of magnetohydrodynamics, Pc5 are interpreted as standing Alfvén...
Published in Izvestiya, Physics of the Solid Earth
An Erratum to this paper has been published: https://doi.org/10.1134/S106935132111001X
