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The separation of the geomagnetic field originated in the core, in the asthenosphere, and in the crust
dynamo spatial spectrum white spectrum Lowes’ law Nevanlinna’ s law Hamilton’ s principle geomagnetic anomalies inner core outer core asthenosphere
2015/10/8
The separation of the field produced by different internal sources can be accomplished by means of the so-called spatial spectrum of the geomagnetic field of internal origin. It is shown how such a ra...
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...
Local time behaviour of low frequency geomagnetic field fluctuation power at low latitude
Geomagnetic pulsation MHD waves and instabilities
2015/9/28
In this paper we present a statistical study of the local time behaviour of low frequency (0.7-4.0 mHz) geomagnetic field fluctuation power at a low latitude station (corrected geomagnetic latitude 36...
Time intermittency and spectral features of the geomagnetic field
nonlinear processes in geophysics geomagneticfield Earth's core fluid dynamics turbulence
2015/9/11
In the field of geomagnetism a number of studies have been devoted to the investigation of turbulence and intermittency in the outer core fluid motions. Here, in order to obtain information on such ph...
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...
Using neural networks to study the geomagnetic field evolution
Geomagnetic Field Geomagnetic Observatory Neural Networks (NN) time series time prediction
2015/9/1
study their time evolution in years. In order to find the best NN for the time predictions, we tested many different
kinds of NN and different ways of their training, when the inputs and targets are ...
Repeat station data compared to a global geomagnetic field model
Geomagnetic repeat station data crustal bias
2015/8/26
Geomagnetic repeat station surveys with local variometers for improved data reductions have been carried out in Germany for about ten years. For nearly the same time interval the satellites Ørste...
Croatian geomagnetic field maps for 2008.5 epoch
Geomagnetic networks Geomagnetic surveys Geomagnetic field Geomagnetic anomaly
2015/8/26
The status of the Croatian Geomagnetic Repeat Stations Network (CGRSN) and Croatian Geomagnetic Network for Field Mapping (CGNFM), completed in 2010, was described. Standard and new survey practices a...
Repeat-station surveys: implications from chaos and ergodicity of the recent geomagnetic field
Magnetic repeat stations Chaos Ergodicity
2015/8/18
The present geomagnetic field is chaotic and ergodic: chaotic because it can no longer be predicted beyond around 6 years; and ergodic in the sense that time averages correspond to phase-space average...
Geomagnetic Field Variation during Winter Storm at Localized Southern and Northern High Latitude
Dst vertical component of interplanetary magnetic field geomagnetic field components
2010/9/16
This paper presents the effect of geomagnetic storm on geomagnetic field components at Southern (Maitri) and Northern (Kiruna)Hemispheres. The Indian Antarctic Station Maitri is located at geom. long....
Application of a wavelet technique for the detection of earthquake signatures in the geomagnetic field
a wavelet technique earthquake signatures the geomagnetic field
2009/12/9
We developed an algorithm especially adapted to single-station wavelet detection of geomagnetic events, which precede or accompany the earthquakes. The detection problem in this situation is complicat...
Comparison of simultaneous variations of the ionospheric total electron content and geomagnetic field associated with strong earthquakes
the ionospheric total electron content geomagnetic field strong earthquakes
2009/12/9
In this paper, perturbations of the ionospheric Total Electron Content (TEC) are compared with geomagnetic oscillations. Comparison is made for a few selected periods, some during earthquakes in Calif...
Variations in the Geomagnetic Field and Auroral-Zone X-Ray Intensity in the Pi 1 Period Range
physics geomagnetism geophysics X-Ray
2009/6/18
Variations in the Geomagnetic Field and Auroral-Zone X-Ray Intensity in the Pi 1 Period Range.
Geomagnetic Field Variation during Winter Storm at Localized Southern and Northern High Latitude
Dst vertical component of interplanetary magnetic field and geomagnetic field components
2009/5/6
This paper presents the effect of geomagnetic storm on geomagnetic
field components at Southern (Maitri) and Northern (Kiruna)
Hemispheres. The Indian Antarctic Station Maitri is located at geom. lo...
SOME RESULTS OF SYSTEMATIC OBSERVATIONS OF GEOMAGNETIC FIELD CHANGES IN THE WIDER AREA OF RUDNIK THRUST REGION
GEOMAGNETIC FIELD CHANGES RUDNIK THRUST REGION
2009/4/22
SOME RESULTS OF SYSTEMATIC OBSERVATIONS OF GEOMAGNETIC FIELD CHANGES IN THE WIDER AREA OF RUDNIK THRUST REGION。