Core-mantle boundary deformations and J2 variations resulting from the 2004 Sumatra earthquake
, 2007 The deformation at the core-mantle boundary produced by the 2004 Sumatra earthquake is investigated by means of a semi-analytic theoretical model of global coseismic and postseismic deformation, predicting a millimetric coseismic perturbation over a ...
A. Piersanti +30 more
core +1 more source
The effects of aliasing and lock-in processes on palaeosecular variation records from sediments [PDF]
, 2000 Studies of sedimentary records of palaeointensity variation report periods as long as 50 kyr. Archaeointensity data show geomagnetic periods of 2 kyr with large ampli-tudes.
Gubbins, D., Teanby, N.
core +1 more source
KAUSTSat: Saudi Arabia's First Hyperspectral CubeSat Mission for Earth Observation
Earth and Space Science, Volume 13, Issue 3, March 2026.Abstract Developed by the King Abdullah University of Science and Technology (KAUST) to support research in atmospheric science and remote sensing, KAUSTSat represented Saudi Arabia's (and the Middle East's) first research‐focused hyperspectral CubeSat mission for Earth observation.
Victor Angulo +5 more
wiley +1 more source
Annals of Geophysics, 2003 The updated version of the ITalian Geomagnetic Reference Field (ITGRF) for 2000.0 and its secular variation model up to 2005.0 are presented in this paper.
J. M. Torta +5 more
doaj +1 more source
Steady induction effects in geomagnetism. Part 1A: Steady motional induction of geomagnetic chaos [PDF]
Geomagnetic effects of magnetic induction by hypothetically steady fluid motion and steady magnetic flux diffusion near the top of Earth's core are investigated using electromagnetic theory, simple magnetic earth models, and numerical experiments with ...
Voorhies, Coerte V.
core +1 more source
Reconstruction of Core‐Surface Flows During the Last 3,300 Years
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.Abstract Understanding the Earth's magnetic field evolution requires examining the fluid flow at the core‐mantle boundary that drives the changes over different timescales. The inversion process to derive core‐surface flow velocities from secular variation data encounters non‐uniqueness issues, necessitating a priori assumptions that yield different ...
Pablo Rivera +2 more
wiley +1 more source
Candidate geomagnetic field models for IGRF-14 and secular acceleration since 2020
Earth, Planets and SpaceIGRF-14 is the fourteenth generation of the International Geomagnetic Reference Field (IGRF), a spherical harmonic model of Earth’s main magnetic field and its secular variation, developed through international collaboration under the auspices of the ...
Arnaud Chulliat, Manoj Nair, Sam Califf
doaj +1 more source
Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina [PDF]
Geofísica Internacional, 2003 Every five years a new International Geomagnetic Reference Field (IGRF) model is released and the secular variation for the previous period is updated, producing the definitive DGRF model.
Marta E. Ghidella +2 more
doaj
Jovimagnetic secular variation [PDF]
Long term variations of a planetary magnetic field are one of the few observables available in the study of planetary interiors and dynamo theory. While variations of the geomagnetic field were accessible to direct measurement for centuries, knowledge of
Acuna, M. H., Connerney, J. E. P.
core +1 more source
Thermal and electrical conductivity of iron at Earth's core conditions [PDF]
, 2012 The Earth acts as a gigantic heat engine driven by decay of radiogenic isotopes and slow cooling, which gives rise to plate tectonics, volcanoes, and mountain building.
A Jackson +41 more
core +2 more sources