搜索结果: 1-15 共查到“地球物理学 Ion”相关记录26条 . 查询时间(0.021 秒)
Ion thermal effects on E-region instabilities: 2D kinetic simulations
E-region electrojet Ionospheric irregularities Plasma instabilities
2017/3/22
Radars frequently receive strong returns from naturally occurring plasma density irregularities centered around
100 km altitude in the atmosphere. These E-region ionospheric irregularities occur when...
Statistical analysis of automatically detected ion density variations recorded by DEMETER and their relation to seismic activity
Satellite Earthquake interactions and probability
2015/8/24
Many examples of ionospheric perturbations observed during large seismic events were recorded by the low-altitude satellite DEMETER. However, there are also ionospheric variations without seismic acti...
Ion microprobe Al–Mg dating of single plagioclase grains in an Efremovka chondrule
Al–Mg dating chondrule ion microprobe Efremovka
2017/4/11
We report here technical details of 26Al–26Mg dating of single plagioclase grains located in a chondrule of the Efremovka
CV3 chondrite using a high spatial resolution secondary ion mass spectrometer...
Very Large Array Observations of Disturbed Ion Flow from the Plasmasphere to the Nighttime Ionosphere
Array Observations of Disturbed Ion Nighttime Ionosphere Space Physics
2012/5/29
We present the results of a multi-scale analysis of TEC fluctuations using a roughly five-hour observation of the bright radio source Virgo A with the Very Large Array (VLA) at 74 MHz in its B configu...
Mixing effects in zircon U–Pb ion microprobe dating: An example from a quartzofeldspathic dyke in the Yeongdeok pluton, southeastern Korea
SHRIMP zircon dating mixing dyke
2017/4/11
A swarm of quartzofeldspathic dykes extensively intruded the Permian–Triassic Yeongdeok pluton and xenoliths therein
in southeastern Korea. Zircons from the dyke intruding a diorite xenolith yield se...
Dissipation and wave-ion interaction in the solar wind:Links between fluid and kinetic theory
wave-ion interaction solar wind Links between fluid and kinetic theory
2009/11/13
In this paper we establish links between turbulence dissipation and wave-particle interactions in the solar corona and wind. Based on quasilinear theory, a set of anisotropic, multi-component fluid eq...
On a nonlinear state of the electromagnetic ion/ion cyclotron instability
nonlinear state electromagnetic ion/ion cyclotron instability
2009/11/13
We have investigated the nonlinear properties of the electromagnetic ion/ion cyclotron instability (EMIIC) by means of hybrid simulations (macroparticle ions, massless electron fluid). The instability...
Three-dimensional simulation of the electromagnetic ion/ion beam instability:cross field diffusion
Three-dimensional simulation electromagnetic ion/ion beam instability cross field diffusion
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 ...
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...
Thin and superthin ion current sheets.Quasi-adiabatic and nonadiabatic models
Thin and superthin ion current sheets Quasi-adiabatic and nonadiabatic models
2009/11/13
Thin anisotropic current sheets (CSs) are phenomena of the general occurrence in the magnetospheric tail. We develop an analytical theory of the self-consistent thin CSs. General solitions of the Grad...
Nonlinear waves and solitons propagating perpendicular to the magnetic field in bi-ion plasma with finite plasma pressure
Nonlinear waves solitons propagating perpendicular magnetic field bi-ion plasma plasma pressure
2009/11/12
We investigate the nature of nonlinear waves propagating transverse to the magnetic field in a bi-ion plasma including plasma pressure. By using the conservation laws derived from the multi-ion fluid ...
Spiky parallel electrostatic ion cyclotron and ion acoustic waves
Spiky parallel electrostatic ion cyclotron ion acoustic waves
2009/11/12
One of the interesting observations from the FAST satellite is the detection of strong spiky waveforms in the parallel electric field in association with ion cyclotron oscillations in the perpendicula...
Resonant-to-nonresonant transition in electrostatic ion-cyclotron wave phase velocity
Resonant-to-nonresonant transition electrostatic ion-cyclotron wave phase velocity
2009/11/11
Because of the implications for plasmas in the laboratory and in space, attention has been drawn to inhomogeneous energy-density driven (IEDD) waves that are sustained by velocity-shear-induced inhomo...
Solitons and oscillitons in multi-ion space plasmas
Solitons oscillitons multi-ion space plasmas
2009/11/11
It is well known that additional low-frequency waves arise when a second ion population is added to a plasma normally consisting of protons and electrons. Here, we investigate stationary structures st...
On ion-cyclotron-resonance heating of the corona and solar wind
ion-cyclotron-resonance heating corona solar wind
2009/11/11
This paper concisely summarizes and critically reviews recent work by the authors on models of the heating of the solar corona by resonance of ions with high-frequency waves (up to the proton cyclotro...