Results 1 to 10 of about 1,315 (164)

Unexpected major geomagnetic storm caused by faint eruption of a solar trans-equatorial flux rope [PDF]

open access: yesNature Communications
Some geomagnetic storms’ solar origins are ambiguous, making them hard to predict. On March 23, 2023, a severe geomagnetic storm occurred, however, forecasts based on remote-sensing observations failed to predict it.
Weilin Teng   +3 more
doaj   +2 more sources

Pymaginverse: A python package for global geomagnetic field modeling

open access: yesApplied Computing and Geosciences
Data-based geomagnetic models are key for mapping the global field, predicting the movement of magnetic poles, understanding the complex processes happening in the outer core, and describing the global expression of magnetic field reversals. There exists
Frenk Out   +4 more
doaj   +3 more sources

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

Regularized geomagnetic field modelling using monopoles [PDF]

open access: yesGeophysical Journal International, 1994
SUMMARY There are many techniques for modelling the geomagnetic field, any one of which may be suitable for a particular application depending on its associated modelling goals. Each method combines a choice of functions and an approach to fitting data so that, in general, it is best suited to a particular type of field modelling, e.g.
Michael S. O'Brien, Robert L. Parker
openaire   +1 more source

Co-estimating geomagnetic field and calibration parameters: modeling Earth’s magnetic field with platform magnetometer data

open access: yesEarth, Planets and Space, 2021
Models of the geomagnetic field rely on magnetic data of high spatial and temporal resolution to give an accurate picture of the Earth’s internal magnetic field and its time-dependence.
Clemens Kloss   +2 more
doaj   +1 more source

A new inclination-based method to evaluate the global geomagnetic configuration and axial dipole moment

open access: yesEarth and Planetary Physics, 2022
The strength and configuration of the geomagnetic field control the average shape of the magnetosphere. The pure dipole assumption and the virtual dipole moment (VDM), determined by individual records, have been widely adopted to evaluate the strength of
KaiHua Xu   +6 more
doaj   +1 more source

АНАЛИЗ ГЕОМАГНИТНЫХ ДАННЫХ И КОСМИЧЕСКИХ ЛУЧЕЙ В ПЕРИОДЫ ПОВЫШЕННОЙ СОЛНЕЧНОЙ АКТИВНОСТИ [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2016
We performed analysis of the cosmic rays variations and studied features of geomagnetic field variations during periods of increased solar activity. The paper applies a new methods of modeling and analysis of the data developed by the authors based on ...
O.V. Mandrikova   +3 more
doaj   +1 more source

Geomagnetic main field modeling with DMSP [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2014
AbstractThe Defense Meteorological Satellite Program (DMSP) launches and maintains a network of satellites to monitor the meteorological, oceanographic, and solar‐terrestrial physics environments. In the past decade, geomagnetic field modelers have focused much attention on magnetic measurements from missions such as CHAMP, Ørsted, and SAC‐C.
Alken, P.   +6 more
openaire   +4 more sources

An improved geomagnetic data selection algorithm for global geomagnetic field modelling [PDF]

open access: yesGeophysical Journal International, 2007
A spherical harmonic degrees 60, global internal field model is described (called BGS/G/L/0706). This model includes a degree 15 core and piecewise-linear secular variation model and is derived from quiet-time Orsted and CHAMP satellite data sampled between 2001.0 and 2005.0.
Thomson, Alan W P   +2 more
openaire   +5 more sources

Quantitative estimates of average geomagnetic axial dipole dominance in deep geological time

open access: yesNature Communications, 2020
This study describes how the geomagnetic axial dipole dominance of Earth’s magnetic field remained stable through large parts of the geological time. Since other characteristics of the geomagnetic field have changed substantially on the same timescales ...
Andrew J. Biggin   +6 more
doaj   +1 more source

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