Results 71 to 80 of about 4,233 (235)
Probabilistic structure of the geodynamo
Physical Review E, 2018 One of the most intriguing features of Earth's axial magnetic dipole field, well-known from the geological record, is its occasional and unpredictable reversal of polarity. Understanding the phenomenon is rendered very difficult by the highly non-linear nature of the underlying magnetohydrodynamic problem. Numerical simulations of the liquid outer core,
Scullard, Christian R, Buffett, Bruce A
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Self‐Consistent Models of Earth's Mantle and Core From Long‐Period Seismic and Tidal Constraints
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.Abstract Here we illustrate the use of parameterized models to address fundamental questions about Earth's mantle and core structure. For this, we invert a large set of normal‐mode center frequencies and quality (attenuation) factors, along with astronomic‐geodetic data, for the radial anelastic seismic structure of the Earth.
F. D. Munch +4 more
wiley +1 more source
Preface to the Special Issue of Initial Scientific Results of MSS-1
Earth and Planetary PhysicsThe scientific research of geomagnetism has been largely driven by new geomagnetic data that are available to scientists. Macau Science Satellite-1 (MSS-1) was successfully launched on 21st May 2023 into a near-circular orbit of altitude of about 450 km ...
Keke Zhang, PengFei Liu, YongXin Pan
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Mantle cooling regulation and ancient geomagnetic field
Russian Journal of Earth Sciences, 2022 The joined core and mantle thermal evolution model of the Earth for 6 Gy is considered. The model describes evolution of the heat fluxes, temperature distribution in the Earth, energy available for the magnetic field generation. Using Monte Carlo method
Reshetnyak Maxim
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Three-dimensional solutions for the geostrophic flow in the Earth's core [PDF]
, 2018 In his seminal work, Taylor (1963) argued that the geophysically relevant limit for dynamo action within the outer core is one of negligibly small inertia and viscosity in the magnetohydrodynamic equations. Within this limit, he showed the existence of a
Hardy, Colin M. +4 more
core +3 more sources
Magnetohydrodynamics, 2012 We consider how information on geostrophic flows in the planetary cores, taken from 3D simulations in the sphere, can be used in 2D Parker's geodynamo model with the simple forms of the $ $-quenching. Using cluster computer systems dependence of dynamo equations solution on the magnitudes of $ $- and $ $-effects is studied.
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Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.Abstract The Laschamps geomagnetic excursion (≈41,000 years BP) was a period of significant weakening and incomplete reversal of the Earth's magnetic field. The weakening substantially reduced geomagnetic shielding against cosmic rays (CRs), which contribute to phenomena at Earth, such as cosmogenic isotope production, and atmospheric ionisation and ...
N. Larsen +4 more
wiley +1 more source
Immersive VR Visualizations by VFIVE. Part 1: Development
, 2013 We have been developing a visualization application for CAVE-type virtual reality (VR) systems for more than a decade. This application, VFIVE, is currently used in several CAVE systems in Japan for routine visualizations.
Kageyama, Akira, Ohno, Nobuaki
core +1 more source
Dynamos with weakly convecting outer layers: implications for core-mantle boundary interaction [PDF]
, 2008 Convection in the Earth's core is driven much harder at the bottom than the top. This is partly because the adiabatic gradient steepens towards the top, partly because the spherical geometry means the area involved increases towards the top, and partly ...
Binod Sreenivasan +7 more
core +1 more source
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.Abstract We present new vector paleomagnetic data from 13 radiometrically dated lava‐flows in southern La Palma (Canary Islands) spanning from 1 to 56 ka, which covers most of the Late Pleistocene to prehistoric Holocene volcanic record in the island.
Eva Vernet +6 more
wiley +1 more source