Switchbacks in the near-Sun magnetic field: long memory and impact on the turbulence cascade

TD de Wit, VV Krasnoselskikh, SD Bale… - The Astrophysical …, 2020 - iopscience.iop.org
One of the most striking observations made by Parker Solar Probe during its first solar
encounter is the omnipresence of rapid polarity reversals in a magnetic field that is …

Magnetic polarity transitions and biospheric effects: historical perspective and current developments

KH Glassmeier, J Vogt - Space science reviews, 2010 - Springer
This review addresses possible biospheric effects of geomagnetic polarity transitions.
During a transition the magnetic field at the surface of the Earth decreases to about 10% of …

The DRESDYN project: liquid metal experiments on dynamo action and magnetorotational instability

F Stefani, A Gailitis, G Gerbeth, A Giesecke… - … & Astrophysical Fluid …, 2019 - Taylor & Francis
Magnetic fields of planets, stars and galaxies are generated by self-excitation in moving
electrically conducting fluids. Once produced, magnetic fields can play an active role in …

A non-extensive statistical physics approach to the polarity reversals of the geomagnetic field

F Vallianatos - Physica A: Statistical Mechanics and its Applications, 2011 - Elsevier
Using the CK95 database of Cande and Kent (1995)[7], we apply the concepts of non-
extensive statistical physics (NESP) to the time intervals between two consecutive …

Emergence of very long time fluctuations and noise in ideal flows

P Dmitruk, PD Mininni, A Pouquet, S Servidio… - Physical Review E …, 2011 - APS
This paper shows the connection between three previously observed but seemingly
unrelated phenomena in hydrodynamic (HD) and magnetohydrodynamic (MHD) turbulent …

Geomagnetic reversal rates following Palaeozoic superchrons have a fast restart mechanism

MW Hounslow - Nature communications, 2016 - nature.com
Long intervals of single geomagnetic polarity (superchrons) reflect geodynamo processes,
driven by core–mantle boundary interactions; however, it is not clear what initiates the start …

Does the planetary dynamo go cycling on? Re-examining the evidence for cycles in magnetic reversal rate

AL Melott, A Pivarunas, JG Meert… - International Journal of …, 2018 - cambridge.org
The record of reversals of the geomagnetic field has played an integral role in the
development of plate tectonic theory. Statistical analyses of the reversal record are aimed at …

Nonrandom geomagnetic reversal times and geodynamo evolution

P Olson, LA Hinnov, PE Driscoll - Earth and Planetary Science Letters, 2014 - Elsevier
Shermanʼs ω-test applied to the Geomagnetic Polarity Time Scale (GPTS) reveals that
geomagnetic reversals in the Phanerozoic deviate substantially from random times. For 954 …

Oscillation or rotation: a comparison of two simple reversal models

F Stefani, M Xu, L Sorriso-Valvo… - Geophysical and …, 2007 - Taylor & Francis
The asymmetric shape of reversals of the Earth's magnetic field indicates a possible
connection with relaxation oscillations as they were early discussed by van der Pol. A simple …

The geodynamo as a random walker: A view on reversal statistics

V Shcherbakov, K Fabian - Journal of Geophysical Research …, 2012 - Wiley Online Library
The sequence of durations of the geomagnetic polarity intervals is often described in terms
of a nonhomogenous Poisson process with time‐dependent reversal rate, reflecting the …