Results 51 to 60 of about 1,315 (164)
Regional Geomagnetic Field Modeling Based on Associated Legendre Polynomials
Applied SciencesGlobal geomagnetic field models typically have low spatial resolution, whereas regional models are constrained by boundary effects and limited truncation levels.
Libo Zhu +4 more
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Geomagnetic Core Field Models in the Satellite Era
, 2010 After a brief review of the theoretical basis and difficulties that modelers are facing, we present three recent models of the geomagnetic field originating in the Earth’s core. All three modeling approaches are using recent observatory and near-Earth orbiting survey satellite data. In each case the specific aims and techniques used by the modelers are
Lesur, V., Olsen, N., Thomson, A.
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MISTA candidate magnetic field models for IGRF-14 derived from MSS-1, Swarm and observatory data
Earth, Planets and SpaceThe International Geomagnetic Reference Field (IGRF) is a spherical harmonic model representing the large-scale Earth’s main magnetic field and its secular variation (SV).
Hongbo Yao +10 more
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Journal of Marine Science and EngineeringIn existing regional geomagnetic field modeling, the smoothness of basic functions and the insufficient data constraints in marginal regions lead to the omission of detail features and extrapolation oscillations.
Hongjie Chen +4 more
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Antarctic Record, 1980 Because of the high electrical conductivity along geomagnetic field lines, the ionosphere and the magnetosphere are closely couoled. After an introductory presentation of some evidence of this coupling, the method for mathematical modeling of the ...
Hiroshi MAEDA
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Operational modelling of geomagnetic fields and geomagnetically induced currents
, 2021 Geomagnetically induced currents (GICs) have long been known to affect power systems adversely. Modelling these GICs usually involves consideration of a chain of coupled systems. The scope of the modelling chain spans multiple disciplines, from solar physics through to geophysics and power engineering.
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Investigation of Regional Geomagnetic Field Modelling in Indonesia [PDF]
, 2021 <p>This thesis deals with the application of the Spherical Cap Harmonic Analysis (SCHA) modelling technique to obtain geomagnetic field models for Indonesia, which have better resolution and accuracy than the International Geomagnetic Reference Field (IGRF).
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Assessment of the Weimer Geomagnetic Perturbation Model for High‐Latitude Positioning and Navigation
Space WeatherThe Geomagnetism Group at the National Centers for Environmental Information (NCEI), in collaboration with the Cooperative Institute for Research in Environmental Sciences (CIRES), along with various government and industry partners, specializes in ...
S. Califf +4 more
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The model of the geomagnetic non-dipole field.
Journal of geomagnetism and geoelectricity, 1983 Yukutake's model separates the geomagnetic field into drifting and standing parts, not only fits well to the observed field for the past several hundred years, but also emphasizig the regularities of the westward drift of the geomagnetic non-dipole field. However, there are still some problems to be reinvestigated:a) In Yukutake's model the geomagnetic
Tan-Wen WANG, Gui-Zhong QI
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In-flight calibration of the fluxgate magnetometer on Macau Science Satellite-1
Earth and Planetary PhysicsHigh-precision magnetic field measurements are crucial for understanding Earth’s internal structure, space environment, and dynamic geomagnetic variations.
YiXin Qiu +10 more
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