搜索结果: 1-15 共查到“地球物理学 solitary waves”相关记录20条 . 查询时间(0.062 秒)
A centre manifold approach to solitary waves in a sheared,stably stratified fluid layer
centre manifold approach solitary waves stratified fluid layer
2009/11/16
The centre manifold approach is used to derive an approximate equation for nonlinear waves propagating in a sheared, stably stratified fluid layer. The evolution equation matches limiting forms derive...
Advection of pollutants by internal solitary waves in oceanic and atmospheric stable stratifications
internal solitary waves oceanic and atmospheric stable stratifications
2009/11/13
When a pollutant is released into the ocean or atmosphere under turbulent conditions, even a steady release is captured by large eddies resulting in localized patches of high concentration of the poll...
Interaction dynamics of electrostatic solitary waves
Interaction dynamics electrostatic solitary waves
2009/11/13
Interaction of nonlinear electrostatic pulses associated with electron phase density holes moving in a collisionless plasma is studied. An elementary event of the interaction is analyzed on the basis ...
Characteristics of electrostatic solitary waves observed in the plasma sheet boundary:Statistical analyses
electrostatic solitary waves plasma sheet boundary Statistical analyses
2009/11/13
We present the characteristics of the Electrostatic Solitary Waves (ESW) observed by the Geotail spacecraft in the plasma sheet boundary layer based on the statistical analyses. We also discuss the re...
Generation of second mode solitary waves by the interaction of a first mode soliton with a sill
second mode solitary waves first mode soliton sill
2009/11/12
Results of an experimental and theoretical study of the interaction of a first mode internal solitary wave with a localised bottom topography (sill) are presented. Laboratory experiments have been per...
This paper presents new results for 1D BGK electron solitary wave (phase-space electron hole) solutions and, based on the new results, extends the solutions to include the 3D electrical interaction (E...
Modeling stretched solitary waves along magnetic field lines
stretched solitary waves magnetic field lines
2009/11/12
A model is presented for a new type of fast solitary waves which is observed in downward current regions of the auroral zone. The three-dimensional, coherent structures are electrostatic, have a posit...
Large amplitude solitary waves in and near the Earth’s magnetosphere,magnetopause and bow shock:Polar and Cluster observations
Large amplitude solitary waves Earth’s magnetosphere magnetopause bow shock
2009/11/11
Solitary waves with large electric fields (up to 100's of mV/m) have been observed throughout the magnetosphere and in the bow shock. We discuss observations by Polar at high altitudes ( ~ 4-8 RE ), d...
Trans-sonic cusped shaped,periodic waves and solitary waves of the electrostatic ion-cyclotron type
Trans-sonic cusped shaped periodic waves solitary waves electrostatic ion-cyclotron type
2009/11/11
By adopting an essentially fluid dynamic viewpoint we derive the wave structure equation for stationary, fully nonlinear, electrostatic, ion-cyclotron waves. The existence of two fundamental constants...
On the three-dimensional configuration of electrostatic solitary waves
three-dimensional configuration electrostatic solitary waves
2009/11/11
The simplest models of the electrostatic solitary waves observed by the Geotail spacecraft in the magnetosphere are developed proceeding from the concept of electron phase space holes. The technique t...
Electron acoustic solitary waves with non-thermal distribution of electrons
Electron acoustic solitary waves non-thermal distribution of electrons
2009/11/11
Electron-acoustic solitary waves are studied in an unmagnetized plasma consisting of non-thermally distributed electrons, fluid cold electrons and ions. The Sagdeev pseudo-potential technique is used ...
Anomalous width variation of rarefactive ion acoustic solitary waves in the context of auroral plasmas
rarefactive ion acoustic solitary waves context of auroral plasmas
2009/11/11
The presence of dynamic, large amplitude solitary waves in the auroral regions of space is well known. Since their velocities are of the order of the ion acoustic speed, they may well be considered as...
Solitary waves observed in the auroral zone:the Cluster multi-spacecraft perspective
Solitary waves auroral zone Cluster multi-spacecraft perspective
2009/11/11
We report on recent measurements of solitary waves made by the Wideband Plasma Wave Receiver located on each of the four Cluster spacecraft at 4.5-6.5RE (well above the auroral acceleration region) as...
On the nonexistence of large amplitude stationary solitary waves in symmetric unmagnetized pair plasmas
large amplitude stationary solitary waves symmetric unmagnetized pair plasmas
2009/11/11
Waves in pair plasmas have a fundamentally different dispersion due to the equal charge-to-mass ratios between negative and positive charges. In view of possible applications e.g. to electron-positron...
On the generation of solitary waves observed by Cluster in the near-Earth magnetosheath
solitary waves near-Earth magnetosheath
2009/11/9
Through case studies involving Cluster waveform observations, solitary waves in the form of bipolar and tripolar pulses have recently been found to be quite abundant in the near-Earth dayside magnetos...