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Svirkunov P.N.,Typhoon Research and Production Association | Kalashnik M.V.,National Research Nuclear University MEPhI
Physics-Uspekhi | Year: 2014

A general approach is proposed within which the phase structure of wave perturbations caused by a moving localized source can be described based on the wave dispersion law alone. Applying this approach, a simple analytical expres- sion for the phase surfaces is obtained. It is used to study the details of phase patterns of gravity-capillary waves, the struc- ture of wave trains in the ocean in the wake of a moving tropical hurricane, and the system of lee waves in Earth's atmosphere. © 2014 Uspekhi Fizicheskikh Nauk, Russian Academy of Sciences. Source


Kalashnik M.V.,Russian Academy of Sciences | Ingel L.K.,Typhoon Research and Production Association
Oceanology | Year: 2013

The process of the geostrophic adjustment in the stably stratified two-component medium is studied in the framework of a linear approximation. We demonstrate that, at the final stage of that process, a stationary trace is generated by the distribution of the temperature and salinity, whose horizontal inhomogeneities mutually compensate in the field of the density. The compensation level for the stationary thermohaline distributions forming during the geostrophic adjustment is estimated. The origination mechanism of compensated thermohaline inhomogeneities in hydrodynamically stable shear flows is examined. We show that, in such flows, the disturbances of the fields of buoyancy (density), pressure, and velocity damp with time, whereas the compensated disturbances of the fields of the temperature and salinity are carried off by the flow without damping. Based on the explicit solutions of the dynamic equations, it is shown that the evolution of the compensated distribution of the temperature and salinity in the shear flows usually results in the sharpening of the spatial gradients. This feature may be, among others, related to one of the factors of the origination of the fine structure of the ocean: the small-scale thermohaline inhomogeneities, which exist against the background of the smooth vertical distribution of the density. © 2013 Pleiades Publishing, Ltd. Source


Ya Shmerlin B.,Typhoon Research and Production Association | Kalashnik M.V.,National Research Nuclear University MEPhI
Physics-Uspekhi | Year: 2013

Convective motions in moist saturated air are accompanied by the release of latent heat of condensation. Taking this effect into account, we consider the problem of convective instability of a moist saturated air layer, generalizing the formulation of the classical Rayleigh problem. An analytic solution demonstrating the fundamental difference between moist convection and Rayleigh convection is obtained. Upon losing stability in the two-dimensional case, localized convective rolls or spatially periodic chains of rollers with localized areas of up-ward motion evolve. In the case of axial symmetry, the growth of localized convective vortices with circulation characteristic of tropical cyclones (hurricanes) is possible at the early stages of development and on the scale of tornados to tropical cyclones. ©2013 Uspekhi Fizicheskikh Nauk, Russian Academy of Sciences. Source


Karasevich Y.K.,Typhoon Research and Production Association | Kulagin A.Y.,Typhoon Research and Production Association | Skripkin A.M.,RAS Semenov Institute of Chemical Physics | Khatyushin P.A.,RAS Semenov Institute of Chemical Physics | Karpov Y.A.,Project Institute of Rare Metal Industry GIREDMET
Inorganic Materials | Year: 2010

The results of a study on the development of a method for coding explosives are presented. As coding additives (CAs), it is proposed to use aluminum alloy powders with dosed amounts of rare-earth coding elements (CEs). This choice is dictated by the fact that aluminum alloys are commonly used as efficient additives in explosive compositions, while rare-earth elements are used as additives in technological operations, but are absent in the composition of standard explosives. In this case, the key to information on a given explosive and its manufacturer is the ratio of CE concentrations determined when analyzing explosives, e.g., when investigating an act of terrorism. Examples of explosion product decoding using a LIES laser-spark express analyzer. © 2010 Pleiades Publishing, Ltd. Source


Merzlyakov E.G.,Typhoon Research and Production Association | Portnyagin Y.I.,Typhoon Research and Production Association | Solov'eva T.V.,Typhoon Research and Production Association | Pogoreltsev A.I.,Russian State Hydrometeorological University | Suvorova E.V.,Russian State Hydrometeorological University
Izvestiya - Atmospheric and Ocean Physics | Year: 2012

Based on empirical monthly data on the parameters of oscillations in the horizontal wind component of the diurnal migrating tide, we calculated the altitude-latitude distributions of the parameters of oscillations in the vertical wind component of the diurnal tide in the region of the mesosphere and lower thermosphere (80-100 km). The initial data were obtained from satellite observations of the mesosphere and lower thermosphere at altitudes from 90 to 120 km and from data of ground-based sounding of this region using the radio meteor method and the method of partial reflections in the altitude range from 80 to 100 km. We compare the resulting distributions with the results of numerical modeling for the migrating diurnal tide using a global circulation model for the middle and upper atmosphere. It is shown that, accurate to measurement errors, there is a good agreement between the distributions of parameters of the migrating diurnal tide obtained by the models. One specific feature of the empirical distributions of the amplitude of the vertical wind oscillations is that there are three regions of increased amplitude values-in the vicinity of the equator and at 30° N and 30° S latitudes-which were observed for all seasons. The maximum value of the amplitude of the vertical wind oscillations is approximately 0.1 m/s. The divergence of the Eliassen-Palm flux was estimated to be on the order of 10 m s -1 day -1. © 2012 Pleiades Publishing, Ltd. Source

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