Table of contents : Contents Verification Second-Order Sea Wave Models 1 Introduction 2 Second-Order Random Model 3 Comparison with Field Measurement Data 4 Conclusion References Internal Gravity Waves Fields Dynamics in Vertically Stratified Horizontally Inhomogeneous Medium References Far Internal Gravity Waves Fields Generated by a Sources Distributed on a Moving Plane References A Two-Story Tornado in a Lab 1 Introduction 2 Problem Formulation and Methods 3 Two-Story Tornado Discussion 4 Physical Mechanism of Double Vortex Breakdown 5 Conclusions References Conditions of the Effective Mixing in a T-Type Micromixer at Low Reynolds Numbers 1 Introduction 2 Experimental Setup and Measurement Technique 3 Results 4 Conclusion References The Problem of Exact Solutions Construction for Potential Steady Surface Waves in the Case of a Liquid of Finite Depth 1 Introduction 2 Problem Statement 3 Solution of the Problem References Anisotropic Permeability of Geomaterials: Lab Test and Borehole Environment Model 1 Introduction 2 Anisotropic Permeability by Lab Test Data and Inverse Problem Solution 2.1 Experimental Design 2.2 Model of the Percolation Experiment 2.3 Test Data Interpretation 3 Mass Transfer in Borehole Environment References Calculation of Dynamic and Energy Characteristics in the Region of Western Crimea Based on the Observational Data from Hydrological Surveys in 2007–2009 in the Numerical Model of the Black Sea Dynamics Using the Kalman Filter Algorithm 1 Methodology and Sources 2 Statement of the Problem and Parameters of the Numerical Experiments 3 Analysis of the Energy Characteristics of the Circulation in the Autumn Season of 2007 and in the Spring Season of 2009 4 Analysis of the Calculated Fields of Currents and the Terms of the Kinetic Energy Budget Equations in the Autumn Season of 2007 5 Analysis of Calculated Fields of Currents and Terms of the Kinetic Energy Budget Equations in the Spring Season of 2009 References One-Dimensional Coherent Convective Structures from Heat Sources 1 One-Dimensional Structures 2 The Solution to the Problem has the Form 3 Conclusions References Features of the Spread Oil Spill in Arctic Conditions References Study of Undercurrents in the Black Sea Northeastern Part by Using Numerical Simulation and Observation Data 1 Introduction 2 Numerical Model 3 Validation 4 Results 5 Conclusion References Modeling Group Structure of the Sea Surface Waves 1 Introduction 2 Characteristics the Group Structure of Waves 3 Modeling the Group Structure of Waves 4 Groupiness Factor and Skewness 5 Conclusion References Identification of the Time-Variable Power of a Point Pollution Source in the Azov Sea Based on the Variational Assimilation Algorithm 1 Introduction 2 Transport Model 3 Variational Identification Algorithm 4 Results of Numerical Experiments 5 Conclusions References Increase in Illumination of 253.7 nm in a Cylindrical PTFE Cavity 1 Introduction 2 Possibilities of Using a Diffuse Reflective Material 2.1 PTFE Peculiarities 2.2 Longitudinal Radiation Source in the Cylindrical Cavity 3 Attenuation of the Radiation Flux of 253.7 nm by PTFE Layers 4 PTFE Cylindrical Cavity 4.1 Experiment 4.2 Numerical Simulation 5 Illumination Increase 6 Conclusion References Determination of the Matter Fluxes on the Sea Bottom Using a Variational Assimilation Algorithm and Remote Sensing Data 1 Introduction 2 Transport Model 3 Variational Identification Algorithm 4 Results of Numerical Experiments 5 Conclusions References Determination of the Vertical Velocity in Hydrodynamic Model Using Nested Grids 1 Introduction 2 Method 3 Results of Numerical Experiments 4 Conclusions References Analysis of the Meteorological and Hydrophysical Factors of Massive Wash-Outs of Marine Litter to the Shore of Sambian Peninsula (The Baltic Sea) 1 Introduction 2 Data and Methods 2.1 Study Area 2.2 Meteorological and Hydrophysical Data 2.3 Data Analysis 3 Results and Discussion 3.1 Typical Example of the Development of the Situation 3.2 Generalization: A Characteristic Picture and Duration of the Formation of Conditions for a Wash-Out 3.3 Wave Situation During the Very Wash-Outs 3.4 The Discussion of the Results 4 Conclusion References The Shores of the Northern Pacific Contact Zones 1 Introduction 2 Overview of the Problem 3 Research Methodology 4 Results and Discussion References Formation of Temperature Anomalies in the Laptev Sea (2000–2020 Years) 1 Introduction 2 Marine Heat Waves in the Laptev Sea. Observation Data Analysis 3 Research Method 4 Numerical Simulation Results 5 Conclusions References On Possibility of Applying Aircaft Scanning Laser Locator for Solving Problems of Operational Oceanology 1 Introduction 2 Surface Waving Research Method 3 Technical Implementation of ASLL Model Aboard Aircraft 4 Results of Field Experimental Studies 5 Conclusions References The Methodology for Enhancement in Determining the Area of Total Underwork of the Rock Mass References Kinematic Model of the Development of the Bottom of the Powell Basin (Weddell Sea) 1 Introduction 2 The Analysis of the Current State of Geological and Geophysical Studies of the Powell Basin 3 Calculation Results 4 Calculation of Breakaway Parameters 5 Conclusions References Investigation of Influece of the Screw Propeller Working Towards the Flow on Parameters of Near Water Aerosol 1 Introduction 2 The Order of the Experiments 3 Experiment Results 4 Discussion of Results and Conclusions References Gold of Riftogenic Structures of the East Ural Uplift 1 Introduction 2 Research Methods 3 Conclusions References Aeolian Moropholitogenesis on the Shores of the Northern Pacific 1 Introduction 2 Research Methodology 3 Results and Discussion 4 Conclusions References Variants of Visualization of the Marine Forecast on the Examples of the Crimean Basin of the Black Sea 1 Introduction 2 Style of “Geographical Atlases” 3 Visualization with Using of TkrPlot 4 The Use of Satellite Maps for the Visualisation of Geophysical Parameters 5 Conclusion References Destruction of Rocky Coastes of Cold Seas 1 Introduction 2 Overview of the Problem 3 Methodology 4 Results and Discussion 5 Conclusions References Bottom Sediments of the Kazantip Nature Reserve Coastal Water Area (Azov Sea) as an Indicator of the Water Area Wellbeing 1 Introduction 2 Material and Methods 3 Results and Discussion 4 Conclusions References The Assessment of the Multifunctional Center Construction Impact on the Surrounding Buildings Within Megapolis Limits 1 Introduction References