Results 11 to 20 of about 1,315 (164)
Space Weather, 2020 We present a case study on the long‐period ( >105 s) induced geoelectric field disturbance during magnetic storms. A set of continuous 33‐day measurements of the geoelectric field, geomagnetic field, geomagnetic indices, and interplanetary magnetic field
S. Y. Wu +10 more
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Simulating the Responses of the Magnetosphere–Ionosphere System to the IMF By Reversal
Frontiers in Physics, 2022 The interplanetary magnetic field (IMF) By component can cause asymmetric features in the magnetosphere-ionosphere system and influence the electromagnetic energy input.
Fan Gong +5 more
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The CHAOS-4 geomagnetic field model [PDF]
Geophysical Journal International, 2014 We present CHAOS-4, a new version in the CHAOS model series, which aims to describe the Earth's magnetic field with high spatial and temporal resolution. Terms up to spherical degree of at least n = 85 for the lithospheric field, and up to n = 16 for the time-varying core field are robustly determined.More than 14 yr of data from the satellites Ørsted,
Olsen, N. +6 more
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The role of 3-D geomagnetic induction in the determination of the ionospheric currents from the ground geomagnetic data [PDF]
Annales Geophysicae, 2005 The geomagnetic field variations measured at the surface of the Earth are composed of both internal and external parts. The external field arises from the sources in the magnetosphere and ionosphere, whereas the internal field is generated by the ...
A. Pulkkinen, M. Engels
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A novel geomagnetic assimilation method of vector geomagnetic data
Results in Physics, 2021 Geomagnetic field has important applications in Earth Science, earthquake prediction, aerospace, national defense construction and other areas. Therefore, accurate modeling of regional geomagnetic field is very important.
Lirong Shen, Guang Sun, Wei Zhai
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Geomagnetic Core Field Secular Variation Models
Space Science Reviews, 2009 We analyse models describing time changes of the Earth’s core magnetic field (secular variation) covering the historical period (several centuries) and the more recent satellite era (previous decade), and we illustrate how both the information contained in the data and the a priori information (regularisation) affect the result of the ill-posed ...
Gillet, N., Lesur, V., Olsen, N.
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Modeling of regional magnetic field applying spherical functions: practical aspect
Геофизический журнал, 2019 Modeling of geomagnetic field and creation of geomagnetic maps is one of the main directions of geomagnetic studies. For constructing global model the global spherical Lejeandre functions are used in most cases, though for constructing regional magnetic ...
Yu. P. Sumaruk +2 more
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A gaussian model for simulated geomagnetic field reversals [PDF]
Physics of the Earth and Planetary Interiors, 2016 Field reversals are the most spectacular changes in the geomagnetic field but remain little understood. Paleomagnetic data primarily constrain the reversal rate and provide few additional clues. Reversals and excursions are characterized by a low in dipole moment that can last for some 10kyr.
Wicht, J., Meduri, D.
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Regional Geomagnetic Field Model for Croatia at 2009.5 [PDF]
Acta Geophysica, 2016 Geomagnetic data of north, east and vertical components at Croatian repeat stations and ground survey sites, as well as European geomagnetic observatories and repeat stations, were used to obtain a regional geomagnetic model over Croatia at 2009.5 epoch.
Vujić, Eugen +2 more
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Modeling of regional magnetic field applying spherical functions: theoretical aspect
Геофизический журнал, 2019 Observation of geomagnetic field, measurement of its components values and establishment on their base models of geomagnetic field as well as geomagnetic mapping are the main trend of geomagnetic studies.
Yu. P. Sumaruk +2 more
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