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381.
Oceanology - The kinetic energy of six jets of the Antarctic Circumpolar Current (ACC) and of the cyclonic and anticyclonic mesoscale eddies generated by these jets is studied in application to the... 相似文献
382.
Alexandrov G. A. Ginzburg A. S. Golitsyn G. S. 《Izvestiya Atmospheric and Oceanic Physics》2019,55(5):407-411
Izvestiya, Atmospheric and Oceanic Physics - The natural variability of regional climatic conditions poses certain difficulties in detecting global climate change at a local scale. The question... 相似文献
383.
Multiple magnetic clouds in interplanetary space 总被引:7,自引:0,他引:7
An interplanetary magnetic cloud (MC) is usually considered the byproduct of a coronal mass ejection (CME). Due to the frequent occurrence of CMEs, multiple magnetic clouds (multi-MCs), in which one MC catches up with another, should be a relatively common phenomenon. A simple flux rope model is used to get the primary magnetic field features of multi-MCs. Results indicate that the magnetic field configuration of multi-MCs mainly depends on the magnetic field characteristics of each member of multi-MCs. It may be entirely different in another situation. Moreover, we fit the data from the Wind spacecraft by using this model. Comparing the model with the observations, we verify the existence of multi-MCs, and propose some suggestions for further work. 相似文献
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We present a new system of equations designed to study global-scale dynamics in the stably-stratified portion of the solar
tachocline. This system is derived from the 3D equations of magnetohydrodynamics in a rotating spherical shell under the assumption
that the shell is thin and stably-stratified (subadiabatic). The resulting thin-shell model can be regarded as a magnetic
generalization of the hydrostatic primitive equations often used in meteorology. It is simpler in form than the more general anelastic or Boussinesq equations, making it more
amenable to analysis and interpretation and more computationally efficient. However, the thin-shell system is still three-dimensional
and as such represents an important extension to previous 2D and shallow-water approaches. In this paper we derive the governing
equations for our thin-shell model and discuss its underlying assumptions, its context relative to other models, and its application
to the solar tachocline. We also demonstrate that the dissipationless thin-shell system conserves energy, angular momentum
and magnetic helicity. 相似文献
387.
388.
The fundamental solution for a periodic point force in the interior of a three-dimensional, homogeneous, isotropic, elastic half-space is derived. The method of synthesis and superposition is employed to obtain the solution in the Laplace transform as well as the frequency domain. These correspond to the dynamic equivalent of Mindlin's static half-space point force solutions. It is reduced, for certain limiting conditions, to the dynamic equivalent of Boussinesq's and Cerruti's problems of a normal and tangential periodic point force respectively, on the boundary of a half-space. Also, static solutions of Mindlin, Boussinesq and Cerruti are recovered for small frequency parameters. Finally, results are presented and compared with other available solutions. 相似文献
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