Results 161 to 170 of about 743 (185)
Modelling Earth’s lithospheric magnetic field using satellites in low-perigee elliptical orbits [PDF]
Geophysical Journal International, 2022 The sensitivity of magnetic measurements taken by satellites in elliptical orbits to the lithospheric magnetic field is studied by comparing the formal error variances of the lithospheric Gauss coefficients for various satellite orbital constellations.We compare the results obtained using a satellite in a near-polar circular orbit at 350 km altitude ...
Nils Olsen, Olsen Nils
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Fifth-generation lithospheric magnetic field model from CHAMP satellite measurements [PDF]
Geochemistry, Geophysics, Geosystems, 2007 Six years of low‐orbit CHAMP satellite magnetic measurements have provided an exceptionally high‐quality data resource for lithospheric magnetic field modeling and interpretation. Here we describe the fifth‐generation satellite‐only magnetic field model MF5. The model extends to spherical harmonic degree 100.
Stefan Maus, H Lühr, Martin Rother
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Geophysical Journal International, 2006 The CHAMP magnetic field mission is providing highly reliable measurements from which the global lithospheric magnetic field can be determined in unprecedented resolution and accuracy.
Stefan Maus, M Rother, Claudia Stolle
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A high resolution lithospheric magnetic field model over China
Science China Earth Sciences, 2013CHAMP satellite data and ground-based magnetic observations are used and combined to map the lithospheric magnetic field over China by means of the revised spherical cap harmonic analysis (R-SHCA) modeling technique. The magnetic field is described to a spatial resolution of 150 km at the mean Earth’s radius, which represents a good compromise between ...
Aimin Du, E Thebault, Xiaobo Tian
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Magnetic Field Data Correction in Space for Modelling the Lithospheric Magnetic Field
Space Science Reviews, 2016The Earth’s magnetic field as it is measured by low-Earth orbit satellites such as Swarm and CHAMP results from the superposition of internal and external source fields overlapping in time and in space. The Earth’s lithospheric field is one of the weakest sources detectable from space and its accurate description requires treatments of rapidly-varying ...
Thébault, Erwan +3 more
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Geochemistry, Geophysics, Geosystems, 2008 The CHAMP satellite continues to provide highly accurate magnetic field measurements from decreasing orbital altitudes (<350 km) at solar minimum conditions. Using the latest 4 years (2004–2007) of readings from the CHAMP fluxgate magnetometer, including an improved scalar data product, we have estimated the lithospheric magnetic field to spherical ...
Stefan Maus, H Lühr, C Manoj
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Computers & Geosciences, 2016
A newly developed software package to calculate the magnetic field in a spherical coordinate system near the Earth's surface and on satellite height is shown to produce reliable modeling results for global and regional applications. The discretization cells of the model are uniformly magnetized spherical prisms, so called tesseroids.
Eldar Baykiev +3 more
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A newly developed software package to calculate the magnetic field in a spherical coordinate system near the Earth's surface and on satellite height is shown to produce reliable modeling results for global and regional applications. The discretization cells of the model are uniformly magnetized spherical prisms, so called tesseroids.
Eldar Baykiev +3 more
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A lithospheric magnetic field model to spherical harmonic degree 13
2023Detailed mapping of the Earth's magnetic field brings key constraints on the composition, dynamics, and history of the crust. Satellite and near-surface measurements detect different length scales and are complementary. However, direct global inversion of a design matrix built with magnetic field measurements locations of near surface and satellite ...
Erwan Thebault, Gauthier Hulot
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2023
The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Thebault, E., Gauthier, H.
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The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Thebault, E., Gauthier, H.
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A Comparison of Global Lithospheric Field Models Derived from Satellite Magnetic Data
2003Satellite missions over more than three decades, have added immensely to our understanding of the geomagnetic field. Here, we give a comparison of the lithospheric field models, prepared by various workers from POGO, Magsat, Orsted and CHAMP satellite data.
Kumar Hemant, Stefan Maus
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