搜索结果: 1-15 共查到“空间物理学 Magnetic”相关记录29条 . 查询时间(0.184 秒)
Magnetic tornado is stirring up the haze at Jupiter's poles
Magnetic tornado Magnetically Hydrocarbon
2024/12/11
Dark ovals in Jupiter's polar haze, visible only at UV wavelengths, were first noticed 25 years ago, then ignored. A new study shows that these dark UV ovals are common, appearing at the south pole in...
Magnetic and solar effects on ionospheric absorption at high latitude
ionospheric absorption solar protons emissions
2015/9/25
Some periods of intense solar events and of strong magnetic storms have been selected and their effects on the ionospheric D region have been investigated on the basis of ionospheric absorption data d...
GPS detection of the instantaneous response of the global ionosphere to strong magnetic storms with sudden commencement
Magnetic field strenght ionospheric disturbances
2015/9/25
Using a new technology for global GPS detection of ionospheric disturbances, GLOBDET, it has been established that a drastic increase in the time derivative of the magnetic field strength during magne...
High resolution magnetic anomaly map of Tenerife, Canary Islands
magnetic anomalies Tenerife Teide aeromagnetism potential fields
2015/9/2
This study presents magnetic anomaly data from a new high-resolution, low-altitude helicopter-borne magnetic survey
recently collected on and offshore Tenerife in the Canary Archipelago. The Italian ...
Electrostatic Structures in Space Plasmas: Stability of Two-dimensional Magnetic Bernstein-Greene-Kruskal Modes
Electrostatic structures, BGK modes, Solitons, Plasma kinetic equations
2011/9/5
Electrostatic structures have been observed in many regions of space plasmas, including the solar wind, the magnetosphere, the auroral acceleration region, and in association with shocks, turbulence, ...
Energetic particle cross-field diffusion:Interaction with Magnetic Decreases (MDs)
Energetic particle cross-field diffusion Magnetic Decreases
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...
Magnetic holes in the solar wind between 0.3 AU and 17 AU
Magnetic holes solar wind 0.3 AU 17 AU
2009/11/13
Magnetic holes (MHs) are depressions of the magnetic field magnitude. Turner et al. (1977) identified the first MHs in the solar wind and determined an occurrence rate of 1.5 MHs/d. Winterhalter et al...
Numerical simulation of ion dynamics in the magnetotail magnetic turbulence:On collisionless conductivity
Numerical simulation ion dynamics magnetotail magnetic turbulence collisionless conductivity
2009/11/13
The ion dynamics in the distant Earth's magnetotail is studied in the case that a cross tail electric field and reconnection parity magnetic turbulence are present in the neutral sheet. A test particl...
A study of magnetic fluctuations and their anomalous scaling in the solar wind:the Ulysses fast-latitude scan
magnetic fluctuations anomalous scaling solar wind Ulysses fast-latitude scan
2009/11/12
The solar wind is a highly turbulent and intermittent medium at frequencies between 10-4 and 10-1 Hz. Power spectra are used to look at fluctuations in the components of the magnetic field at high fre...
A theory of the Earth's magnetic field and of sunspots,based on a self-excited dynamo incorporating the Hall effect
Earth's magnetic field self-excited dynamo Hall effect
2009/11/12
A new viewpoint on the generation and maintenance of the Earth's magnetic field is put forward, which integrates self-exciting dynamo theory with the possibility of energy coupling along orthogonal ax...
A Monte Carlo simulation of magnetic field line tracing in the solar wind
Monte Carlo simulation magnetic field line solar wind
2009/11/12
It is well known that the structure of magnetic field lines in solar wind can be influenced by the presence of the magnetohydrodynamic turbulence. We have developed a Monte Carlo simulation which trac...
Calculation of the parameter deflection in a new theory of the Earth’s magnetic field
parameter deflection new theory Earth’s magnetic field
2009/11/12
In a recent paper on the theory of the Earth's magnetic field and key features of Sunspot activity (de Paor, 2001), a central role in the calculation of secular variations of the geomagnetic field was...
Effects of MHD slow shocks propagating along magnetic flux tubes in a dipole magnetic field
MHD slow shocks magnetic flux tubes dipole magnetic field
2009/11/12
Variations of the plasma pressure in a magnetic flux tube can produce MHD waves evolving into shocks. In the case of a low plasma beta, plasma pressure pulses in the magnetic flux tube generate MHD sl...
Evolution of magnetic helicity under kinetic magnetic reconnection:Part II B≠0 reconnection
magnetic helicity kinetic magnetic reconnection B≠0 reconnection
2009/11/12
We investigate the evolution of magnetic helicity under kinetic magnetic reconnection in thin current sheets. We use Harris sheet equilibria and superimpose an external magnetic guide field. Consequen...
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...