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31.
The general three-body problem with equal masses and zero initial velocities is considered. Zones in which the triple systems decay over short times T < 10T cr are distinguished in the domain of the initial conditions, where T cr is the mean crossing time for a component of the triple system. These zones form distinct families of structures. Properties of the trajectories of bodies within these structures are described. The structures often display a layered character, with each layer corresponding to triple systems in which a particular body departs during the decay. These layers alternate with zones in which the decay does not occur on such short time scales, and the bodies are flung outward without this leading to a departure, or undergo simple interactions. In the zones of rapid decay, the departure of one of the bodies occurs after one or a few triple encounters between the components. 相似文献
32.
33.
The relations between parameters of triple approaches and the lengths of subsequent ejections are analyzed for the general three-body problem with components of equal masses and zero initial velocities. A statistically significant correlation is shown to exist between the closeness of approaches and the lengths of subsequent ejections: closer approaches generally result in longer ejections. We have found several systems that evolve to a temporary quasi-stable chain-like configuration. 相似文献
34.
One- and two-dimensional sections of the region of initial conditions in the vicinity of a periodic Ducati orbit have been studied in detail in the plane equal-mass three-body problem. A continuous stability region generated by the periodic Ducati orbit has been revealed. In addition, a number of other stability regions that are probably related to stable hierarchical triple systems have been found. Several specific trajectories from the stability regions and in the boundary zones are analyzed. 相似文献
35.
Analysis of regions of stability in the vicinity of a new periodic S orbit in the three-body problem
The vicinity of a periodic S orbit in the three-body problem with bodies of equal mass is investigated. It is shown that there
exists a region of stable motions that preserve the form of the initial periodic orbit. Various sections describing this region
are considered. Some specific trajectories from the region of stability and near the boundary of this region are analyzed.
Several other regions of stability that are apparently associated with other periodic orbits have also been identified. 相似文献
36.
M. V. Martynova 《Water Resources》2009,36(6):683-688
Relationships between within-year variations in Fe(II)/Fe(III) ratio in silt pore solution were obtained. The samples to be examined were taken from silts of the channel zone of the Krasnovidovo Pool, the Mozhaisk Reservoir. Specific features of the within-year redistribution of Fe forms in the pore solution of the sediment column were identified. 相似文献
37.
M. V. Martynova 《Water Resources》2009,36(1):76-85
Annual variations in concentrations of Fe forms in the bottom water (0–70 cm from the bottom, by layers), pore water, and in solid phase of silts (25 cm, by layers) of the Krasnovidovo Pool channel area of the Mozhaisk Reservoir are studied. A drastic increase in the concentration and ratio of Fesusp/Fedis in the water layer 0–20 cm from the bottom is detected. Fe(II) dominates in dissolved and suspended forms. The concentrations of Fe(III) reaching 2–3 mg/l were for the fist time revealed in the pore water of silts (Eh ～ ?120 mV). The factors responsible for this phenomenon are discussed. Fe flux from sediments is tentatively assessed as 0.2–0.6 mg Fe m2/day. 相似文献
38.
This study is devoted to the influence that anomalous snow cover in the Siberian autumn has on the surface temperature in
the winter months using the intermediate complexity model of a climate system. The possible mechanisms of the effect that
a thermal forcing anomaly on surfaces attributed to the troposphere-stratosphere interaction has on the temperature regime
in winter are considered. 相似文献
39.
V. N. Krupchatnikov V. I. Kuzin E. N. Golubeva Yu. V. Martynova G. A. Platov A. I. Krylova 《Izvestiya Atmospheric and Oceanic Physics》2009,45(1):116-136
The dynamics of the climate and surface hydrology of northern Eurasia under the conditions of global climate changes is studied using coupled models of the atmospheric and oceanic general circulation. Feedbacks are assessed and analyzed for some parameters of the atmosphere and surface hydrology. The role of the biosphere (including the surface air layer, the vegetation layer, soil, and the hydrosphere) in the dynamics of the climate of the 21st century is studied. The features of the dynamics of the northern Atlantic seas during the periods corresponding to different phases of the North Atlantic Oscillation index are studied. 相似文献
40.
By the method of asymptotic multiscale expansions in the Boussinesq approximation, we study nonlinear effects observed in
the process of propagation of internal waves with regard for the turbulent viscosity and diffusion. We determine the decrement
of attenuation of waves and the boundary-layer solutions at the bottom and on the free surface. The wave-induced mean current
is found in the second order of smallness in the wave steepness. The coefficients of the nonlinear Schr?dinger equation are
obtained for the envelope of the wave packet. It is shown that a weakly nonlinear plane wave is stable under longitudinal
modulation in the long-wave limit. If the wavelength is smaller than a certain critical value, then the wave is unstable under
modulation. 相似文献