搜索结果: 1-15 共查到“地球物理学 fluctuations”相关记录15条 . 查询时间(0.171 秒)
Investigating the temporal fluctuations in geoelectrical and geochemical signals Jointly measured in a seismic area of Southern Apennine chain (Italy)
geoelectrical and geochemical signal scaling power spectral analysis
2015/9/28
We analyse geoelectrical and geochemical time series jointly measured by means of a multiparametric automatic station close to an anomalous fluid emission in Val d'Agri (Basilicata, Southern Italy). I...
Low-frequency (0.7-7.4 mHz) geomagnetic field fluctuations at high latitude:frequency dependence of the polarization pattern
Geomagnetic pulsation MHD waves and instabilities wave polarizations Antartica
2015/9/28
A statistical analysis of the polarization pattern of low-frequency geomagnetic field fluctuations (0.7-7.4 mHz) covering the entire 24-h interval was performed at the Antarctic station Terra Nova Bay...
Low frequency geomagnetic field fluctuations at cap and low latitude during October 29-31,2003
magnetospheric ULF waves sun-earth interaction polar cap
2015/9/2
On October-November 2003 complex interplanetary structures, originated by a series of solar eruptions, hit the Earth, triggering violent Sun-Earth connection events. In this paper we analyze the low f...
Order parameter fluctuations in natural time and b-value variation before large earthquakes
Order parameter fluctuations natural time b-value variation large earthquakes Geophysics
2012/5/29
Self-similarity may stem from two origins: the process' increments infinite variance and/or process' memory. The $b$-value of the Gutenberg-Richter law comes from the first origin. In the frame of nat...
A note on chaotic vs. stochastic behavior of the high-latitude ionospheric plasma density fluctuations
stochastic behavior high-latitude ionospheric plasma density fluctuations
2009/11/16
Four data sets of density fluctuations measured in-situ by the Dynamics Explorer (DE 2) were analyzed in an attempt to study chaotic nature of the high-latitude turbulence and, in this way to compleme...
Renormalization group method for Farley-Buneman fluctuations:basic results
Renormalization group method Farley-Buneman fluctuations basic results
2009/11/16
Sudan and Keskinen in [1979] derived a set of equations governing the nonlinear evolution of density fluctuations in a low-pressure weakly ionized plasma driven unstable by the E x B or gradient-drift...
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...
Intermittency,non-Gaussian statistics and fractal scaling of MHD fluctuations in the solar wind
Intermittency,non-Gaussian statistics fractal scaling MHD fluctuations solar wind
2009/11/13
This paper gives a review of some recent work on intermittency, non-Gaussian statistics, and fractal scaling of solar wind magnetohydrodynamic turbulence. Model calculations and theories are discussed...
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...
Scaling and singularity characteristics of solar wind and magnetospheric fluctuations
Scaling and singularity characteristics solar wind magnetospheric fluctuations
2009/11/12
Preliminary results are presented which suggest that scaling and singularity characteristics of solar wind and ground-based magnetic fluctuations appear to be a significant component in the solar wind...
Multifractal structure of the large-scale heliospheric magnetic field strength fluctuations near 85AU
Multifractal structure magnetic field strength fluctuations 85AU
2009/11/11
During 2002, the Voyager 1 spacecraft was in the heliosphere between 83.4 and 85.9AU (1AU is the mean distance from the Sun to Earth) at 34° N heliographic latitude. The magnetic field strength profil...
Statistical analysis of transfer of fluctuations in solar wind turbulence
Statistical analysis transfer fluctuations solar wind turbulence
2009/11/2
We present results of statistical analysis of the transfer of fluctuations in solar wind turbulence. We investigate the dynamics of the slow solar wind using an approach based on the Markov processes ...
Solar cycle dependence of scaling in solar wind fluctuations
Solar cycle dependence scaling solar wind fluctuations
2009/11/2
In this review we collate recent results for the statistical scaling properties of fluctuations in the solar wind with a view to synthesizing two descriptions: that of evolving MHD turbulence and that...
Deep bore well water level fluctuations in the Koyna region,India:the presence of a low order dynamical system in a seismically active environment
water level fluctuations low order dynamical system seismically active environment
2009/10/30
Water level fluctuations in deep bore wells in the vicinity of seismically active Koyna region in western India provides an opportunity to understand the causative mechanism underlying reservoir-trigg...
Application of Transfer Function and Conceptual Pulse Models to the Study of Groundwater Level Fluctuations
Application of Transfer Function and Conceptual Pulse Models to the Study of Groundwater Level Fluctuations
2009/6/15
Application of Transfer Function and Conceptual Pulse Models to the Study of Groundwater Level Fluctuations.