Results 11 to 20 of about 743 (185)
A high-resolution lithospheric magnetic field model over southern Africa based on a joint inversion of CHAMP, Swarm, WDMAM, and ground magnetic field data [PDF]
Solid Earth, 2018 We derive a lithospheric magnetic field model up to equivalent spherical harmonic degree 1000 over southern Africa. We rely on a joint inversion of satellite, near-surface, and ground magnetic field data.
F. Vervelidou, E. Thébault, M. Korte
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Earth and Planetary Physics, 2023 A future constellation of at least four geomagnetic satellites (designated Macau Scientific Satellite-1 (MSS-1) and Macau Scientific Satellite-2 (MSS-2)) was recently proposed, to continue high-quality geomagnetic observations in the post-Swarm period ...
Yi Jiang +3 more
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An equivalent source method for modelling the global lithospheric magnetic field [PDF]
Geophysical Journal International, 2015 We present a new technique for modelling the global lithospheric magnetic field at Earth’s surface based on the estimation of equivalent potential field sources. As a demonstration we show an application to magnetic field measurements made by the CHAMP satellite during the period 2009–2010 when it was at its lowest altitude and solar activity was quiet.
Kother, Livia Kathleen +3 more
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A Swarm lithospheric magnetic field model to SH degree 80 [PDF]
Earth, Planets and Space, 2016 The Swarm constellation of satellites was launched in November 2013 and since then has delivered high-quality scalar and vector magnetic field measurements. A consortium of several research institutions was selected by the European Space Agency to provide a number of scientific products to be made available to the scientific community on a regular ...
Thébault, Erwan +3 more
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Geosciences, 2020 In this study, we present a novel approach combining the advantages of tesseroids in representing geophysical structures though their voxel-like discretization features with a spherical harmonic representation of the magnetic field.
Eldar Baykiev +2 more
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Magnetic Inversion and Regional Tectonics of the Dabie Orogen
Magnetochemistry, 2023 Physical property inversion techniques are the methods to reveal the internal structures of Earth’s lithosphere. In this study, we introduce an Occam-type inversion algorithm into a spherical coordinate system, and invert the magnetization based on the ...
Liang Zhang +6 more
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Retrieving lithospheric magnetisation distribution from magnetic field models [PDF]
Geophysical Journal International, 2019 Summary We investigate to which extent the radially averaged magnetisation of the lithosphere can be recovered from the information content of a spherical harmonic model of the generated magnetic field when combined with few simple hypotheses.
Lesur, V, Vervelidou, F
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A cubed-sphere based method for global and regional modeling of the lithospheric magnetic field
Earth and Planetary PhysicsThe Earth’s magnetic field, which has been extensively observed from ground to satellite altitudes over several decades, originates from multiple sources, such as the core dynamo, the conductive mantle, the magnetized lithosphere, and the space current ...
Liang Yin +5 more
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Spectral and spatial decomposition of lithospheric magnetic field models using spherical Slepian functions [PDF]
Geophysical Journal International, 2013 Global magnetic field models are typically expressed as spherical-harmonic expansion coefficients. Slepian functions are linear combinations of spherical harmonics that produce new basis functions, which vanish approximately outside chosen geographical boundaries but also remain orthogonal within the spatial region of interest. Hence, they are suitable
Beggan, Ciarán D. +3 more
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A new high-resolution geomagnetic field model for southern Africa
South African Journal of ScienceEarth’s magnetic field is a dynamic, changing phenomenon. The geomagnetic field consists of contributions from several sources, of which the main field originating in Earth’s core makes up the bulk.
Amore E. Nel +3 more
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