搜索结果: 1-15 共查到“地球物理学 STATISTICAL”相关记录20条 . 查询时间(0.156 秒)
Statistical properties of the deviations of f 0 F 2 from monthly medians
deviations solar cycle
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2015/9/25
The deviations of hourly f 0 F 2 from monthly medians for 20 stations in Europe during the period 1958-1998 are studied. Spectral analysis is used to show that, both for original data (for each hour) ...
A statistical study of aftershock sequences
Statistics aftershocks crustal activity earthquake magnitude
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2015/8/28
A comprehensive statistical study of the phenomenology of aftershock sequences is made in this paper. The spatial distribution of aftershocks indicates that they are mainly crustal events; however, de...
Statistical analysis of automatically detected ion density variations recorded by DEMETER and their relation to seismic activity
Satellite Earthquake interactions and probability
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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...
A simple statistical procedure for the analysis of radon anomalies associated with seismic activity
Radon emissions Seismic precursors Seismic activity
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2015/8/18
This study presents an analysis of data from various radon anomalies that were compiled by Toutain and Baubron [1999], to investigate their relationships with the earthquake parameters of magnitude an...
GIS and statistical analysis for landslide susceptibility mapping in the Daunia area, Italy
GIS statistical analysis landslide susceptibility mapping Daunia area Italy
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2010/10/21
This study focuses on landslide susceptibility mapping in the Daunia area (Apulian Apennines, Italy) and achieves this by using a multivariate statistical method and data processing in a Geographical ...
Statistical properties of galaxy distributions
Statistical properties galaxy distributions
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2009/11/16
The recent availability of complete three dimensional samples of galaxies and clusters permits a direct study of their spatial properties. We present a brief review of galaxy correlations based on the...
Characteristics of electrostatic solitary waves observed in the plasma sheet boundary:Statistical analyses
electrostatic solitary waves plasma sheet boundary Statistical analyses
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2009/11/13
We present the characteristics of the Electrostatic Solitary Waves (ESW) observed by the Geotail spacecraft in the plasma sheet boundary layer based on the statistical analyses. We also discuss the re...
Statistical distribution of elapsed times and distances of seismic events:the case of the Southern Spain seismic catalogue
Statistical distribution elapsed times distances of seismic events seismic catalogue
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2009/11/9
Several empiric cumulative distributions of elapsed times and distances between seismic events occurred in the Southern Iberian Peninsula from 1985 to 2000 (data extracted from the seismic catalogue o...
Statistical characteristics of surrogate data based on geophysical measurements
Statistical characteristics surrogate data geophysical measurements
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2009/11/9
In this study, the statistical properties of a range of measurements are compared with those of their surrogate time series. Seven different records are studied, amongst others, historical time series...
Statistical analysis of Stromboli VLP tremor in the band [0.1–0.5] Hz:some consequences for vibrating structures
Statistical analysis Stromboli VLP tremor band [0.1–0.5] Hz vibrating structures
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2009/11/9
We analyze time series of Strombolian volcanic tremor, focusing our attention on the frequency band [0.1–0.5] Hz (very long period (VLP) tremor). Although this frequency band is largely affected by no...
On statistical equilibrium in helical fluid flows
statistical equilibrium helical fluid flows
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2009/11/9
The statistical mechanics of 3-D helical flows is re-examined for a continuum truncated at a top wavenumber. Based on the principle of equipartition of the flow enstrophy between helical modes, the em...
Statistical analysis of transfer of fluctuations in solar wind turbulence
Statistical analysis transfer fluctuations solar wind turbulence
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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 ...
Statistical properties of earthquakes clustering
Statistical properties earthquakes clustering
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2009/10/30
Often in nature the temporal distribution of inhomogeneous stochastic point processes can be modeled as a realization of renewal Poisson processes with a variable rate. Here we investigate one of the ...
The effect of third-order nonlinearity on statistical properties of random directional waves in finite depth
third-order nonlinearity statistical properties random directional waves finite depth
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2009/10/30
It is well established that third-order nonlinearity produces a strong deviation from Gaussian statistics in water of infinite depth, provided the wave field is long crested, narrow banded and suffici...
Statistical Earthquake Frequency Analysis for Western Anatolia
extreme value distribution Western Anatolia zonation seismic assessment earthquake
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2009/7/7
In order to apply a statistical earthquake frequency analysis to western Anatolia, the area has been restricted within coordinates 36.50º-40º North and 26.00º-30.00º East. Data use...