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Kaluga, Russia

Getmanov V.G.,Russian Academy of Sciences | Gvishiani A.D.,Russian Academy of Sciences | Kamaev D.A.,NPO Taifun | Kornilov A.S.,National Research Nuclear University MEPhI
Izvestiya, Physics of the Solid Earth | Year: 2016

The problem of the algorithmic recognition of anomalous time intervals in the time series of the sea-level observations conducted by the Russian Tsunami Warning Survey (RTWS) is considered. The normal and anomalous sea-level observations are described. The polyharmonic models describing the sea-level fluctuations on the short time intervals are constructed, and sea-level forecasting based on these models is suggested. The algorithm for the recognition of anomalous time intervals is developed and its work is tested on the real RTWS data. © 2016, Pleiades Publishing, Ltd. Source


Ingel' L.K.,NPO Taifun
Izvestiya - Atmospheric and Ocean Physics | Year: 2011

A nonlinear analytical model of the near-water air layer is considered. In the model, the effect of spray droplets on turbulent exchange is taken into account through their effect on density stratification. To close the system of equations, a semiempirical turbulence theory in the Kolmogorov-Monin form is used. Unlike previous publications, we use an alternative closure scheme that seems more appropriate. A version is also proposed for generalizing the model to the case where heavy admixture particles (spray droplets) make a dominant contribution to the average density of a medium. This model allows a general analytical solution that, in principle, describes non-linear effects such as a decrease in the effective friction and "self-closure" of the heavy admixture in the near-surface layer because of turbulence suppression due to the strengthening of stratification stability. As the current data show, however, the intensity of spray production is probably insufficient to explain the recently discovered phenomenon of the aerodynamic-drag decrease (saturation) in storm winds. © 2011 Pleiades Publishing, Ltd. Source


Yaroshevich M.I.,NPO Taifun
Izvestiya, Physics of the Solid Earth | Year: 2011

A possible influence of tropical cyclones on seismic activity in the cyclonic zone of the northwestern Pacific is considered. There is no direct and sufficiently reliable method for calculating the degree of impact of tropical cyclones on the Earth's crust. Therefore, a sort of inverse problem is solved in the investigation: a possible qualitative influence of tropical cyclones on seismic activity is estimated from its intra-annual dynamics. It is established that for territories of the cyclonic zone, the intra-annual dynamics of cyclonic and seismic activities are similar. Low monthly mean values of the cyclonic and seismic energies are attained in July-October, whereas in the continental territories under consideration (Central Asia), the seismic activity is higher in January-March. The results obtained suggest that cyclones can affect the seismic regime in the cyclonic zone of the northwestern Pacific. © 2011 Pleiades Publishing, Ltd. Source


Yaroshevich M.I.,NPO Taifun
Izvestiya - Atmospheric and Ocean Physics | Year: 2011

A chronological series of tropical cyclones is a flow of cyclonic activity where the bursts and calms of cyclonic activity alternate. Some interrelations between the stages of cyclonic activity have been studied. We derive the dependence that the length of the time interval between two consecutive of bursts of cyclonic activity have on a number of parameters of the first burst and the calm between the bursts. We find that one can estimate the intensity of the subsequent burst on the basis of the intensity of the previous burst. We derive a regression between the value of burst energy at a given time and the value of energy in the same burst for 1-3 days. © 2011 Pleiades Publishing, Ltd. Source


Ingel L.K.,NPO Taifun
Izvestiya - Atmospheric and Ocean Physics | Year: 2014

Attention is focused on a positive feedback that may play a significant role in intense vortices, such as tornadoes and, probably, tropical cyclones: rotation suppresses turbulence which, in turn, may intensify rotation. Some simple models illustrate this phenomenon. © 2014 Pleiades Publishing, Ltd. Source

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