Results 91 to 100 of about 737 (157)
Satellite magnetic data reveal interannual waves in Earth's core. [PDF]
Proc Natl Acad Sci U S A, 2022 Gillet N +5 more
europepmc +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
Waves in planetary dynamos. [PDF]
Rev Mod Plasma Phys, 2023 Hori K, Nilsson A, Tobias SM.
europepmc +1 more source
Detection of a New Large Free Core Nutation Phase Jump. [PDF]
Sensors (Basel), 2022 Malkin Z, Belda S, Modiri S.
europepmc +1 more source
Statistical forecasting techniques applied to observatory data for core field modelling [PDF]
, 2017 Modelling of the geomagnetic field is a complex challenge, hindered by noisy and incomplete ground and satellite observations, and the extent to which we can separate the contributions of the various field sources in these data.
Beggan, Ciaran +2 more
core
The SGR 1806-20 magnetar signature on the Earth's magnetic field
, 2007 SGRs denote ``soft $\gamma$-ray repeaters'', a small class of slowly spinning neutron stars with strong magnetic fields. On 27 December 2004, a giant flare was detected from magnetar SGR 1806-20.
Alexandrescu +23 more
core +1 more source
Observation of the Earth’s nutation by the VLBI: how accurate is the geophysical signal
, 2016 International audienceWe compare nutation time series determined by several International VLBI Service for geodesy and astrometry (IVS) analysis centers.
Bizouard, Christian +2 more
core +2 more sources
Forecasting geomagnetic time series for global field modelling [PDF]
, 2018 The secular variation (SV) of the geomagnetic field is difficult to accurately predict with our current incomplete knowledge of its governing physics. Many academic and applied studies rely on the extrapolation of global field models beyond their most ...
Brown, William +2 more
core
Comparative views of geomagnetic jerks
, 2010 New geomagnetic field models (Wardinski and Lesur, GFZ Potsdam, 2009) covering the years 1957–2006 - here the model C3FM2 - enable new comparative secular variation investigations. Combined with the method of nonharmonic downward continuation and e.g.
Ballani, L. +4 more
openaire +1 more source
GEOMAGNETIC JERK AS CHAOTIC FLUCTUATION
, 2013 [1] The geomagnetic field is chaotic and can be characterized by a mean exponential time scale after which it is no longer predictable. It is also ergodic, so time analyses can substitute the more difficult phase space analyses. Taking advantage of these two properties of the Earth's magnetic field, a scheme of processing global geomagnetic models in
Mioara Mandea +6 more
openaire +1 more source