Results 21 to 30 of about 735 (194)

GEOMAGNETIC METHOD FOR AUTOMATIC DIAGNOSTICS OF AURORAL OVAL BOUNDARIES IN TWO HEMISPHERES OF EARTH

open access: yesSolar-Terrestrial Physics, 2021
The ground-based automatic method for determining auroral oval (AO) boundaries developed by the authors [Lunyushkin, Penskikh, 2019] has been modified and expanded to the Southern Hemisphere. Input data of the method contains large-scale distributions of
Yu.V. Penskikh   +2 more
doaj   +1 more source

Some new approaches to the study of the Earth's magnetic field reversals

open access: yesAnnals of Geophysics, 2003
Paleomagnetic studies clearly show that the polarity of the magnetic fi eld has been subject to reversals. It is generally assumed that polarity intervals are exponentially distributed.
G. Consolini, P. De Michelis
doaj   +1 more source

Domino model for geomagnetic field reversals [PDF]

open access: yesPhysical Review E, 2013
accepted for Physical Review E, 18 December ...
Mori, N.   +6 more
openaire   +3 more sources

Propagation of low frequency geomagnetic field fluctuations in Antarctica: comparison between two polar cap stations [PDF]

open access: yesAnnales Geophysicae, 2007
We conduct a statistical analysis of the coherence and phase difference of low frequency geomagnetic fluctuations between two Antarctic stations, Mario Zucchelli Station (geographic coordinates: 74.7° S, 164.1° E; corrected geomagnetic ...
L. Santarelli, S. Lepidi, L. Cafarella
doaj   +1 more source

Midday reversal of equatorial ionospheric electric field [PDF]

open access: yesAnnales Geophysicae, 1997
A comparative study of the geomagnetic and ionospheric data at equatorial and low-latitude stations in India over the 20 year period 1956–1975 is described.
R. G. Rastogi
doaj   +1 more source

Penelitian Magnetostratigrafi dan Penerapan Satuan Stratigrafi Polaritas Magnet sebagai Satuan Kronostratigrafi: Studi Kasus di Cekungan Bandung serta Daerah Mojokerto dan Sangiran, Jawa

open access: yesIndonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v5i2.99Palaeomagnetism has a role to make a new stratigraphic nomenclature based on the earth magnetism of a nonperiodic reversal polarity phenomenon. Since this phenomenon has a global impact, it can be used as a potential correlation,
Edi Sunardi
doaj   +1 more source

Further complexities on the pre-reversal vertical drift modeling over the Brazilian region: A comparison between long-term observations and model results

open access: yesJournal of Space Weather and Space Climate, 2020
The vertical component of the plasma drift, especially the evening-time pre-reversal drift, constitutes an important aspect of the nighttime electrodynamics of the equatorial ionosphere.
Sousasantos Jonas   +5 more
doaj   +1 more source

A Study of Stochastic Resonance in the Periodically Forced Rikitake Dynamo

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2007
The geodynamo has widely been thought to be an intuitive and selfsustained model of the Earth¡¦s magnetic field. In this paper, we elucidate how a periodic signal could be embedded in the geomagnetic filed via the mechanism of stochastic resonance in a ...
Chien-Chih Chen Chih-Yuan Tseng
doaj   +1 more source

Multiterminal High‐Voltage Direct Current Projects: A Comprehensive Assessment and Future Prospects

open access: yesHigh Voltage, EarlyView.
ABSTRACT Multiterminal high‐voltage direct current (MT‐HVDC) systems are an important part of modern power systems, addressing the need for bulk power delivery and efficient renewable energy integration. This paper provides a comprehensive overview of recent advances in MT‐HVDC technology, including launched projects and ongoing initiatives.
Mohammad Hossein Mousavi   +3 more
wiley   +1 more source

A >70‐Myr‐Long Geomagnetic Field Reversal Hyperactivity Across the Ediacaran‐Cambrian Transition

open access: yesGeophysical Research Letters
The long‐term variation of the geomagnetic field is a key constraint for unraveling the geodynamo processes and the evolution of Earth's deep interior.
Fuyun Shen   +6 more
doaj   +1 more source

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