搜索结果: 1-15 共查到“地球物理学 the current”相关记录27条 . 查询时间(0.092 秒)
A method for f0F2 monitoring over Spain using the El Arenosillo digisonde current observations
Ionospheric F2 layer short-term prediction methods ionospheric mapping
2015/10/8
Ionosphere monitoring implies: observations, prediction and mapping of ionospheric parameters. A case with one available (El Arenosillo) ionosonde is considered. Some statistical methods for f0F2 shor...
Current knowledge on the Central America historical seismicity: an analysisof recent catalogues
historical earthquakes catalogues
2015/9/14
Historical seismicity studies in Central America have increased since 1980. Currently, there is a well-organized
regional digital catalogue database structured according to modern techniques. It cont...
CURRENT SITUATION OF THE EDUCATIONAL PROJECT ON DISASTER PREVENTION IN TAIWAN
disaster prevention education popularization e-learning
2014/5/9
The Taiwan government has invested much effort in developing and promoting disaster relief and prevention by following out many research projects after the 1999 Chichi earthquake. "Experiment and Deve...
Nonlinear quenching of current fluctuations in a self-exciting homopolar dynamo
Nonlinear quenching current fluctuations self-exciting homopolar dynamo
2009/11/13
In the interpretation of geomagnetic polarity reversals with their highly variable frequency over geological time it is necessary, as with other irregularly fluctuating geophysical phenomena, to consi...
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...
Double layers in the downward current region of the aurora
Double layers downward current region aurora
2009/11/11
Direct observations of magnetic-field-aligned (parallel) electric fields in the downward current region of the aurora provide decisive evidence of naturally occurring double layers. We report measurem...
Phase-space holes due to electron and ion beams accelerated by a current-driven potential ramp
Phase-space holes electron and ion beams current-driven potential ramp
2009/11/11
One-dimensional open-boundary simulations have been carried out in a current-carrying plasma seeded with a neutral density depression and with no initial electric field. These simulations show the dev...
Characteristics of quasi-static potential structures observed in the auroral return current region by Cluster
quasi-static potential structures auroral return current region Cluster
2009/11/11
Temporal and spatial characteristics of intense quasi-static electric fields and associated electric potential structures in the return current region are discussed using Cluster observations at geoce...
The nonlinear coupling of electromagnetic ion cyclotron and lower hybrid waves in the ring current region:the magnetic storm 1-7May 1998
nonlinear coupling electromagnetic ion cyclotron lower hybrid waves ring current region
2009/11/11
The excitation of lower hybrid waves (LHWs) is a widely discussed mechanism of interaction between plasma species in space, and is one of the unresolved questions of magnetospheric multi-ion plasmas. ...
Hysteresis-controlled instability waves in a scale-free driven current sheet model
Hysteresis-controlled instability waves scale-free driven current sheet model
2009/11/11
Magnetospheric dynamics is a complex multiscale process whose statistical features can be successfully reproduced using high-dimensional numerical transport models exhibiting the phenomenon of self-or...
Electrodynamics in a very thin current sheet leading to magnetic reconnection
thin current sheet magnetic reconnection
2009/11/9
We study the formation of a very thin current sheet (CS) and associated plasma electrodynamics using three-dimensional (3-D) particle-in-cell simulations with ion to electron mass ratio M/m=1836. The ...
Experimental study of nonlinear interaction of plasma flow with charged thin current sheets:2.Hall dynamics,mass and momentum transfer
nonlinear interaction plasma flow thin current sheets Hall dynamics mass and momentum transfer
2009/11/9
Proceeding with the analysis of Amata et al. (2005), we suggest that the general feature for the local transport at a thin magnetopause (MP) consists of the penetration of ions from the magnetosheath ...
Experimental study of nonlinear interaction of plasma flow with charged thin current sheets:1.Boundary structure and motion
nonlinear interaction plasma flow thin current sheets Boundary structure
2009/11/9
We study plasma transport at a thin magnetopause (MP), described hereafter as a thin current sheet (TCS), observed by Cluster at the southern cusp on 13 February 2001 around 20:01 UT. The Cluster obse...
The influence of convective current generator on the global current
convective current generator global current
2009/11/9
The mathematical generalization of classical model of the global circuit with taking into account the convective current generator, working in the planetary boundary layer was considered. Convective c...
ENSO dynamics in current climate models:an investigation using nonlinear dimensionality reduction
ENSO dynamics current climate models nonlinear dimensionality reduction
2009/10/30
Linear dimensionality reduction techniques, notably principal component analysis, are widely used in climate data analysis as a means to aid in the interpretation of datasets of high dimensionality. T...