This issue’s articles are devoted to theoretical and experimental studies of extreme waves on the surface of a liquid, methods of their modeling, analysis of waveform and wave energy evolution; the evolution differential inclusion as a generalization of dynamic equations; the simulation results of numerical experiments; analysis of the simplest weakly nonlinear models of three-dimensional sea swell; the problem of rogue waves formation on the surface of deep water; analysis of rogue waves formation through an interaction of simultaneously moving swell waves; process of rogue waves formation in the condition of transformation of initially narrow wave spectrum.
This special historical issue consists of reports and statements of the Commemorative Meeting of scientists of the Russian Academy of Sciences, industrial organizations and the Navy veterans. Meeting was dedicated to the 70th anniversary of the Protection Service for ships of the Navy physical fields. The articles covering history of creation, modern state and prospects of development of tools and methods to protect ships; features of ensuring secrecy and protection of surface ships and submarines; contribution of industrial organizations and the Navy to solving above mentioned problems; problem of informational support of computer control systems by physical fields of submarines; problem of development of monitoring and forecasting system of the marine environment hydrophysical fields in the interests of secrecy and protection of the Navy ships.
This issue’s articles are devoted to the results of current research in the field of geophysical hydrodynamics, motion mechanics, underwater acoustics, marine optics; the assessment of sensitivity of the Pechora Sea` tidal dynamics towards various external parameters; numerical study of the ice keel motion in two-layer fluid comparing with the laboratory experiments results; methods for operational rogue waves forecasting; selection and assessment of characteristics of the White Sea internal waves obtained from application of wavelet analysis; the problem of high-speed penetration of a needle-shaped object in water and its interaction with metal barrier; optimization methods of parameters of the extended hydroacoustical shipboard antennas under conditions of uneven distribution of noise, filtering of echo tone and reverberation disturbance; details of the expedition which goal was to study spatiotemporal variability of the White Sea hydrophysical fields.
This issue’s articles are devoted to the theoretical and experimental research in ocean optics; new results in the field of remote sensing and underwater imaging; optical characteristics of water; light field and concentration of phytoplankton in sea and lake water; analysis of possibility of creating a radically new system of underwater imaging based on complex-modulated beam illumination; solution of the problem of spatio-temporal distortion of pulsed light beam propagating in water; new algorithm of atmospheric correction of data provided by MODIS satellite scanner; the underwater gliders – promising new technology of underwater exploration; the results of regional studies regarding correlation of optical inhomogeneities of atmosphere over the Black Sea; correlation between optical and hydrological parameters of the Barents and Kara Seas; models of optical characteristics of phytoplankton and dissolved organic matter in the Baltic Sea.