Results 21 to 30 of about 19,448,839 (267)
Modeling and Predicting the Short‐Term Evolution of the Geomagnetic Field [PDF]
Journal of Geophysical Research: Solid Earth, 2018 AbstractWe propose a reduced dynamical system describing the coupled evolution of fluid flow and magnetic field at the top of the Earth's core between the years 1900 and 2014. The flow evolution is modeled with a first‐order autoregressive process, while the magnetic field obeys the classical frozen flux equation.
Bärenzung, Julien +4 more
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Recovering external contribution from the monthly mean series of a given geomagnetic observatory
Annals of Geophysics, 2016 The differences between monthly mean values of the observed geomagnetic field and monthly values predicted by different models of the internal geomagnetic field (named “model biases”) for the time period 2000-2015 at several geomagnetic observatories are
Bejo Duka, Eni Duka, Klaudio Peqini
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Sensors, 2022 In aeromagnetic detection, the magnetic interference conducted by electric currents in onboard electronic (OBE) equipment is gradually being taken seriously with the development of aeromagnetic compensation technology.
Chao Zhang +4 more
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A Model of the Geomagnetic Field at Epoch 1975 [PDF]
Geophysical Journal International, 1975 Summary The main magnetic field at epoch 1975 is defined by 168 spherical harmonic coefficients (those representing the internal part to degree and order 12). A further 80 coefficients (degree and order 8) define the secular variation and, in addition, 26 secular acceleration coefficients (those most significantly determined) are included.
D. R. Barraclough +3 more
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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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Report on the magnetic survey in Slovakia for the 2014.5 epoch
Contributions to Geophysics and Geodesy, 2016 The models of the distribution of the elements of the geomagnetic field must be updated regularly. For this purpose geomagnetic measurements have to be carried out repeatedly at geomagnetic observatories as well as at temporary observation points.
Fridrich VALACH +3 more
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Error model of geomagnetic-field measurement and extended Kalman-filter based compensation method. [PDF]
PLoS ONE, 2017 The real-time accurate measurement of the geomagnetic-field is the foundation to achieving high-precision geomagnetic navigation. The existing geomagnetic-field measurement models are essentially simplified models that cannot accurately describe the ...
Zhilei Ge +4 more
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Co-estimation of geomagnetic field and in-orbit fluxgate magnetometer calibration parameters
Earth, Planets and Space, 2020 For the past 20 years, state of the art geomagnetic core field models have relied heavily on magnetic measurements made from space-based instrumentation.
Patrick Alken +2 more
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Frontiers in Earth Science, 2022 As a parameter that quantitatively measures the shielding effect of the Earth’s magnetic field on energetic particles, the geomagnetic cutoff rigidities will change significantly with the long-term change of geomagnetic field.
Wei Chu +6 more
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The International Geomagnetic Reference Field [PDF]
, 2011 The International Geomagnetic Reference Field (IGRF) is an internationally agreed and widely used mathematical model of the Earth’s magnetic field of internal origin. We describe its inception in the 1960s and how it has developed since. We also describe
Finlay, Christopher, Macmillan, Susan
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