搜索结果: 1-13 共查到“地球物理学 disturbances”相关记录13条 . 查询时间(0.037 秒)
Low-latitude ionospheric disturbances associated with earthquakes
Ionosphre equatorial anomaly low latitudes earthquakes
2015/9/28
Topside electron density measured on satellite board was analyzed. It was shown that before the two considered earthquakes with their epicenters located at low and equatorial latitudes the stable modi...
Disturbances in LF radio-signals as seismic precursors
radio signals seismicity precursors
2015/9/28
Low Frequency (LF) radio signals lie in the band 30-300 kHz. Monitoring equipment able to measure the electric strength of such signals, at field sites with very low noise levels, were designed and as...
Climatology of ionosphericF-region disturbances
ionosphere F2-layer critical frequency ionospheric disturbances
2015/9/14
After more than 60 years of research, ionospheric disturbances are today a most challenging topic of upper atmospheric
physics. Although the understanding of the thermosphere-ionosphere system has in...
Slip weakening, strain and short-termpreseismic disturbances
slip weakening accelerated creep short-term earthquake precursor strain spatialtemporalscale mosaic pattern teleseismic effects
2015/9/14
The problem of short-term earthquake precursors is discussed. In contrast to the increasing number of reports on short-lived precursors of various types, direct strain measurements cannot detect clear...
A dynamic system to forecast ionospheric storm disturbances based on solar wind conditions
inospheric forecasting ionospheric modelling ionospheric storms
2015/9/10
For the reliable performance of technologically advanced radio communications systems under geomagnetically
disturbed conditions, the forecast and modelling of the ionospheric response during storms ...
Anomaly disturbances of the magnetic fields before the strong earthquake in Japan on March 11, 2011
Magnetic field ULF magnetic field 2011 Japan earthquake
2015/8/24
One of the strongest earthquakes, with magnitude M 8.9, occurred at the sea bottom near to the east coast of Japan on March 11, 2011. This study is devoted to the investigation of anomaly disturbances...
Large ionospheric disturbances during a minor geomagnetic storm on June 23,2000
Ionospheric storm Minor geomagnetic disturbance Energy transfer
2015/8/24
We investigate the variations in the ionosphere during a small geomagnetic storm on June 23, 2000, using the total electron content of the Jet Propulsion Laboratory global positioning system, and the ...
Description of ionospheric disturbances observed by Vertical Ionospheric Sounding at 3 MHz
Fading fluctuation Ionospheric irregularities Multipath fading Ionograms
2015/8/17
High Frequency radio waves reflected by the ionosphere can provide a relevant amount of information within the composite received signal. The ionosphere is indeed a frequency dispersive, bi-refractive...
Searching for seismo-ionospheric earthquakes precursors: Total Electron Content disturbances before 2005-2006 seismic events
seismo-ionoispheric earthquake precursors total electron content of ionosphere lithosphere-atmosphere-ionosphere coupling
2012/5/17
During earthquakes preparation periods significant disturbances in the ionospheric plasma density are often observed. These anomalies are caused by lithosphere-atmosphere-ionosphere interaction, parti...
On the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundary
oblique disturbances supersonic shear flow instability geomagnetic tail boundary
2009/11/12
A study is made of the influence of the longitudinal magnetic field and density inhomogeneity on the supersonic shear flow instability at the magnetospheric tail boundary. It is shown that the most un...
Schlieren visualisation and measurement of axisymmetric disturbances
Schlieren visualisation axisymmetric disturbances
2009/11/12
Synthetic schlieren is a new technique that allows one easily and inexpensively to visualise density variations, such as those caused by internal waves propagating in a density stratified fluid. In th...
Nonlinear instability of baroclinic atmosphere with reference to planetary scale disturbances
Nonlinear instability baroclinic atmosphere planetary scale disturbances
2009/11/11
In this paper we investigate the stability of zonal flow in a baroclinic atmosphere with respect to finite-amplitude planetary-scale disturbances by applying Arnold's method. Specifically, we examine ...
Tracking heliospheric disturbances by interplanetary scintillation
heliospheric disturbances interplanetary scintillation
2009/11/9
Coronal mass ejections are known as a solar cause of significant geospace disturbances, and a fuller elucidation of their physical properties and propagation dynamics is needed for space weather predi...