This book corresponds to the fourth volume of the series focused on Processes in GeoMedia and their research on the dynamic of natural systems - geosphere, hydrosphere, atmosphere, and their interactions-, the human contribution to naturally occurring processes are among the most urgent and essential scientific problems. The widespread introduction of computer technology has allowed calculating complex phenomena, previously unavailable for analysis. The creation and improvement of a new generation of geophysical instruments, remote observing systems based on the ship, aircraft, and satellite allow obtaining a large amount of data to reflect the broad picture of the processes objectively. The articles included in this book also reflect a critical position in laboratory modeling of research in geo-environments and testing.

Determination of cavities under the concrete slab anchoring the upper slopes of the Novosibirsk hydroe-lectric power station using standing waves.- Acoustic measurements on synthetic fractured samples made using FDM 3D printing technology.- Variational identification of the transport model parameters in the Azov Sea based on remote sensing data.- Separated flows under hydrodynamic action of a solution on rock salt.- Innovative technologies for the construction of horizontal and two-tiered underground reservoirs in rock salt.-  Coastal geology and geomorphology of the Kasatka Bay (Iturup Island, South Kuril Islands, SE Russia).- The movement of the particles around cylindrical particle in a shear flow.- Metastable instability of Marangoni convection.- Impact of warm winters on the White Sea: in silico experiment.

Tatiana Olegovna Chaplina, Ph.D., graduated from the Faculty of Physics at Lomonosov Moscow State University. She currently works at the Institute of Mechanics Problems at the Russian Academy of Sciences and Moscow State University's Department of Geophysics. She is the author of more than 250 works, holds three patents, and is the Quaternion Publishing House Director.