Summary
LCS-1: a high-resolution global model of the lithospheric magnetic field derived from CHAMP and Swarm satellite observations
Nils Olsen, Dhananjay Ravat, Christopher C Finlay, Livia K Kother
Geophysical Journal International, Volume 211, Issue 3, 1 December 2017, Pages 1461–1477, https://doi.org/10.1093/gji/ggx381
"We derive a new model, named LCS-1, of Earth’s lithospheric field based on four years (2006 September–2010 September) of magnetic observations taken by the CHAMP satellite at altitudes lower than 350 km, as well as almost three years (2014 April–2016 December) of measurements taken by the two lower Swarm satellites Alpha and Charlie. The model is determined entirely from magnetic ‘gradient’ data (approximated by finite differences): the north–south gradient is approximated by first differences of 15 s along-track data (for CHAMP and each of the two Swarm satellites), while the east–west gradient is approximated by the difference between observations taken by Swarm Alpha and Charlie..."
For more information, see https://academic.oup.com/gji/article-abstract/211/3/1461/4157793
Metadata
| General | Dataset name | Lithospheric magnetic field from CHAMP and Swarm |
|---|---|---|
| Purpose | Research | |
| Primary theme/Subject | Geophysics | |
| Secondary theme/Category | Magnetics | |
| Tertiary theme/Type | Satellite | |
| File format | Geosoft Grid | |
| Web link | https://geosoftgxdev.atlassian.net/wiki/spaces/DAP/pages/304349185/Lithospheric+magnetic+field+from+CHAMP+and+Swarm | |
| Abstract | Scalar field anomlay F (in nT) at Earth's surface (WGS84) on a 0.25 x 0.25 grid in latitude and longitude (equidistant in geographic latitude and longitude) as given by LCS-1 lithospheric field model, for spherical harmonic degrees n = 14 to 185. The LCS-1 is described in Olsen, N., D. Ravat, C. C. Finlay, and L. K. Kother, LCS-1: A high-resolution global model of the lithospheric magnetic field derived from CHAMP and Swarm satellite observations, Geophys. J. Int., 211, 1461-1477, doi:10.1093/gji/ggx381, 2017 | |
| Location | Region | World |
| Data | Project name | F_LCS-1_ellipsoid_14-185 |
| Data source | ||
| Project type | ||
| Scale / Resolution | 0.25 degrees | |
| Unit of measurement | nT | |
| Data created by | Olsen, N., D. Ravat, C. C. Finlay, and L. K. Kother | |
| Data creation date | 2017-09-13 | |
| Metadata created by | N. Green, Geosoft Inc | |
| Metadata creation date | 2018-02-26 | |
| Confidentiality | Public |
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