Few areas of geophysics are today progressing as rapidly as basic geomagnetism, which
seeks to understand the origin of the Earth's magnetism. Data about the present …

The magnetic fields of the planets, including the Earth, are generated by dynamo action in
their fluid cores. Numerical models of this process have been developed that solve the …

Scaling laws for planetary dynamos relate the characteristic magnetic field strength,
characteristic flow velocity and other properties to primary quantities such as core size …

We have derived a model of the near-Earth magnetic field (up to spherical harmonic degree
n= 50 for the static field, and up to n= 18 for the first time derivative) using more than 6.5 yr of …

Modern observations of the geomagnetic field reveal fluctuations,, with a dominant period of
about 60 years. These fluctuations are probably a result of waves in the liquid core, although …

A novel geomagnetic satellite constellation: Science and applications Page 1 REVIEW
GEOPHYSICS Earth and Planetary Physics 7: 4–21, 2023 doi: 10.26464/epp2023019 A novel …

Turbulent motions of liquid metal in Earth's outer core generate the geomagnetic field.
Magnetic field observations from low-Earth-orbit satellites, together with advanced numerical …

Convection is a fundamental physical process in the fluid cores of planets. It is the primary
transport mechanism for heat and chemical species and the primary energy source for …

The magnetic field of the Earth is by far the best documented magnetic field of all known
planets. Considerable progress has been made in our understanding of its characteristics …

We report a calculation of time‐dependent quasi‐geostrophic core flows for 1940–2010.
Inverting recursively for an ensemble of solutions, we evaluate the main source of …