Results 81 to 90 of about 6,666 (172)
Model Validation of M‐I Coupling in SWMF
Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.Abstract The accurate modeling of field‐aligned currents (FAC) and electron precipitation is critical for understanding magnetosphere‐ionosphere coupling and improving space weather predictions. This study evaluates the performance of the SWMF in replicating observed FAC magnitudes and distributions, as well as electron precipitation during storms and ...
Tre'Shunda James, Alex Glocer
wiley +1 more source
Statistics of the geomagnetic secular variation for the past 5Ma [PDF]
A new statistical model is proposed for the geomagnetic secular variation over the past 5Ma. Unlike previous models, the model makes use of statistical characteristics of the present day geomagnetic field.
Constable, C. G., Parker, R. L.
core +1 more source
Data Science Journal, 2011 There is a need to develop secular variation (SV) models using satellite data as the use of ground data is not always possible. Ground data has many limitations including limited data points and lack of data over ocean areas that are not easily ...
E Nahayo, P B Kotzé, M J Alport
doaj +1 more source
Potential utility of future satellite magnetic field data [PDF]
The requirements for a program of geomagnetic field studies are examined which will satisfy a wide range of user needs in the interim period between now and the time at which data from the Geopotential Research Mission (GRM) becomes available, and the ...
core +1 more source
Annals of Geophysics, 2002 The Earth's magnetic field varies over a wide range of characteristic times, say, from years to centuries, and more. In order to detect some nonlinear features of the geomagnetic field evolution we first apply a nonlinear spectral technique, i.e ...
A. De Santis, R. Tozzi
doaj +1 more source
Data use investigation for the magnetic field satellite (MAGSAT) mission: Geomagnetic field forecasting and fluid dynamics of the core [PDF]
MAGSAT data were used to construct a variety of spherical harmonic models of the main geomagnetic field emanating from Earth's liquid core at poch 1980. These models were used to: (1) accurately determine the radius of Earth's core by a magnetic method, (
Benton, E. R.
core +1 more source
An analysis of the fluctuations of the geomagnetic dipole
, 2007 The time evolution of the strength of the Earth's virtual axial dipole moment (VADM) is analyzed by relating it to the Fokker-Planck equation, which describes a random walk with VADM-dependent drift and diffusion coefficients.
Bouligand +16 more
core +1 more source
Report on the magnetic survey in Slovakia for the 2014.5 epoch
Contributions to Geophysics and Geodesy, 2016 The models of the distribution of the elements of the geomagnetic field must be updated regularly. For this purpose geomagnetic measurements have to be carried out repeatedly at geomagnetic observatories as well as at temporary observation points.
Fridrich VALACH +3 more
doaj +1 more source
Estimated Surface Motions of the Earth's Core [PDF]
Estimated surface fluid motions of earth core, and rotational and irrotational flow ...
Ball, R. H. +2 more
core +1 more source
Relation of the westward drift of the geomagnetic field to the rotation of the earth's core [PDF]
Relation of westward drift of geomagnetic field to rotation of earth ...
Richmond, A. D.
core +1 more source