Results 21 to 30 of about 1,315 (164)
B-Lspace and geomagnetic field models [PDF]
Journal of Geophysical Research, 1968 Geomagnetic field models compared in magnetic field strength-earth distance coordinates /B-L space/, noting geomagnetically trapped radiation flux ...
Lindstrom, Peter J., Heckman, Harry H.
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Earth, Planets and Space, 2021 We have produced a 5-year mean secular variation (SV) of the geomagnetic field for the period 2020–2025. We use the NASA Geomagnetic Ensemble Modeling System (GEMS), which consists of the NASA Goddard geodynamo model and ensemble Kalman filter (EnKF ...
Andrew Tangborn +3 more
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Space Weather, 2021 We must be able to predict and mitigate against geomagnetically induced current (GIC) effects to minimize socio‐economic impacts. This study employs the space weather modeling framework (SWMF) to model the geomagnetic response over Fennoscandia to the ...
A. P. Dimmock +10 more
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A global climatological model of extreme geomagnetic field fluctuations [PDF]
Journal of Space Weather and Space Climate, 2020 This paper presents a multi-parameter global statistical model of extreme horizontal geomagnetic field fluctuations (dBH/dt), which are a useful input to models assessing the risk of geomagnetically induced currents in ground infrastructure. Generalised Pareto (GP) distributions were fitted to 1-min measurements of |dBH/dt| from 125 magnetometers (with
Neil C. Rogers +4 more
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Modeling of the Sq geomagnetic field induced by tidal oscillations of the atmosphere
Earth and Planetary PhysicsThe Sq (solar quiet) geomagnetic field is generated by the electric currents in the E-region of the ionosphere, driven by the atmospheric tides. It is a critical part of high-precision geomagnetic field modeling.
WenBo Li, DaLi Kong, HongBo Yao, Hao Yan
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Shenzhen Daxue xuebao. Ligong banTo address the issues of limited accuracy and poor adaptability in the traditional geomagnetic benchmark map modeling, we propose a construction method for regional geomagnetic benchmark map based on Taylor polynomial expansion.
LI Yunhong +6 more
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Solar-Terrestrial Physics, 2017 We present results of modeling of the electron temperature distribution in the F region of the subauroral ionosphere for different helio-geomagnetic conditions with consideration for magnetospheric heat fluxes.
Gololobov A.Yu. +2 more
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Earth, Planets and Space, 2021 We describe the way a global model of the geomagnetic field has been built using vector field data acquired by the absolute scalar magnetometers (ASM) running in vector mode on board the Alpha and Bravo satellites of the European Space Agency (ESA) Swarm
Pierre Vigneron +3 more
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Geomagnetic field models incorporating frozen-flux constraints [PDF]
Geophysical Journal International, 1993 An algorithm is developed for constructing plausible field models satisfying the frozen-flux hypothesis of Roberts and Scott (1965), which supposes that, for short time intervals, diffusion can be neglected. The algorithm is based on a new parameterization of the field in terms of its radial component B(r) at the core-mantle boundary (CMB).
Catherine G. Constable +2 more
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The influence of regularization on the geomagnetic core field modeling
地球与行星物理论评Earth's magnetic field is generated through the dynamo action in the liquid outer core. Using observational data from geomagnetic satellites and observatories, we can construct geomagnetic models that describe spatial and temporal variations of the core ...
Juyuan Xu, Yufeng Lin, Keke Zhang
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