Chapter 1: Determination of cavities under the concrete slab anchoring the upper slopes of the Novosibirsk hydroe-lectric power station using standing waves .- Chapter 2: Acoustic measurements on synthetic fractured samples made using FDM 3D printing technology.- Chapter 3: Variational identification of the transport model parameters in the Azov Sea based on remote sensing data.- Chapter 4: Detached flows at rock salt exposition to aqueous solution.- Chapter 5: Innovative technologies for construction of horizontal and double-deck underground tanks in rock salt.- Chapter 6: Coastal geology and geomorphology of the Kasatka Bay (Iturup Island, South Kuril Islands, SE Russia).- Chapter 7: The movement of the particles around cylindrical particle in a shear flow.- Chapter 8: Internal Gravity Waves Fields Dynamics in Vertically Stratified Horizontally Inhomogeneous Medium.