搜索结果: 1-15 共查到“地球物理学 Diffusion”相关记录16条 . 查询时间(0.128 秒)
A meteoroid penetrating the Earth’s atmosphere leaves behind a trail
of dense plasma embedded in the lower E/upper D-region ionosphere. While
radar measurements of meteor trail evolution have been c...
Volatile diffusion in silicate melts and its effects on melt inclusions
diffusion silicate melts volatiles water carbon dioxide sulfur fluorine igneous processes chlorine melt inclusion
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2015/9/10
A compendium of diffusion measurements and their Arrhenius equations for water, carbon dioxide, sulfur, fluorine,
and chlorine in silicate melts similar in composition to natural igneous rocks is pre...
The characterization of diffusion tensor for mid-latitude ionospheric plasma
Ionosphere Diffusion tensor Electrical conductivity
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2015/8/17
In this study, the relationship between diffusion and the electrical conductivity tensor is investigated by using the real geometry of the Earth’s magnetic field in the Northern Hemisphere for mid-lat...
The dilatancy-diffusion hypothesis and earthquake predictability
dilatancy-diffusion hypothesis earthquake predictability
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2014/5/19
The dilatancy–diffusion hypothesis was one of the first attempts to predict the form of potential geophysical signals that may precede earthquakes, and hence provide a possible physical basis for eart...
Anomalous diffusion in geophysical and laboratory turbulence
Anomalous diffusion in geophysical laboratory turbulence
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2009/11/16
We present an overview and some new results on anomalous diffusion of passive scalar in turbulent flows (including those used by Richardson in his famous paper in 1926). The obtained results are based...
Cosmic ray momentum diffusion in the presence of nonlinear Alfvén waves
Cosmic ray momentum diffusion nonlinear Alfvén waves
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2009/11/16
The relation between the spatial diffusion coefficient along the magnetic field, kII, and the momentum diffusion coefficient, Dp, for relativistic cosmic ray particles is modelled using Monte Carlo si...
Energetic particle cross-field diffusion:Interaction with Magnetic Decreases (MDs)
Energetic particle cross-field diffusion Magnetic Decreases
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2009/11/13
Magnetic field Decreases (MDs) are detected in the heliospheric polar regions. The MDs have minimum spatial scales sizes of 25 proton thermal gyroradii, and are typically bounded by tangential or rota...
Diffusion model of interacting gravity waves on the surface of deep fluid
Diffusion model interacting gravity waves surface of deep fluid
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2009/11/13
A simple phenomenological model for nonlinear interactions of gravity waves on the surface of deep water is developed. The Snl nonlinear interaction term in the kinetic equation for wave action is rep...
Three-dimensional simulation of the electromagnetic ion/ion beam instability:cross field diffusion
Three-dimensional simulation electromagnetic ion/ion beam instability cross field diffusion
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2009/11/13
In a system with at least one ignorable spatial dimension charged particles moving in fluctuating fields are tied to the magnetic field lines. Thus, in one-and two-dimensional simulations cross-field ...
A basing of the diffusion approximation derivation for the four-wave kinetic integral and properties of the approximation
diffusion approximation derivation four-wave kinetic integral
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2009/11/12
A basing of the diffusion approximation derivation for the Hasselmann kinetic integral describing nonlinear interactions of gravity waves in deep water is discussed. It is shown that the diffusion app...
Two-dimensional MHD model of the reconnection diffusion region
Two-dimensional MHD model reconnection diffusion region
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2009/11/12
Magnetic reconnection is an important process providing a fast conversion of magnetic energy into thermal and kinetic plasma energy. In this concern, a key problem is that of the resistive diffusion r...
Turbulent thermal diffusion of aerosols in geophysics and in laboratory experiments
Turbulent thermal diffusion aerosols geophysics laboratory experiments
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2009/11/11
We discuss a new phenomenon of turbulent thermal diffusion associated with turbulent transport of aerosols in the atmosphere and in laboratory experiments. The essence of this phenomenon is the appear...
Second generation diffusion model of interacting gravity waves on the surface of deep fluid
Second generation diffusion model interacting gravity waves surface of deep fluid
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2009/11/11
We propose a second generation phenomenological model for nonlinear interaction of gravity waves on the surface of deep water. This model takes into account the effects of non-locality of the original...
Energetic particle parallel diffusion in a cascading wave turbulence in the foreshock region
Energetic particle parallel diffusion wave turbulence foreshock region
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2009/11/3
We study parallel (field-aligned) diffusion of energetic particles in the upstream of the bow shock with test particle simulations. We assume parallel shock geometry of the bow shock, and that MHD wav...
Projection of compact fractal sets:application to diffusion-limited and cluster-cluster aggregates
compact fractal sets diffusion-limited cluster-cluster aggregates
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2009/11/2
The need to assess the three-dimensional fractal dimension of fractal aggregates from the fractal dimension of two-dimensional projections is very frequent in geophysics, soil, and atmospheric science...