Articles | Volume 36, issue 5
Regular paper
18 Oct 2018
Regular paper |  | 18 Oct 2018

On the approximation of spatial structures of global tidal magnetic field models

Roger Telschow, Christian Gerhards, and Martin Rother

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Cited articles

Egbert, G. and Erofeeva, S.: Efficient inverse modeling of barotropic ocean tides, J. Atmos. Ocean Tech., 19, 183–204, 2002. a
Finlay, C., Olsen, N., and Tøffner-Clausen, L.: DTU candidate field models for IGRF-12 and the CHAOS-5 geomagnetic field model, Earth Planet. Space, 67, 114–130, 2015. a
Fischer, D. and Michel, V.: Automatic best-basis selection for geophysical tomographic inverse problems, Geophys. J. Int., 193, 1291–1299, 2013. a
Freeden, W. and Gerhards, C.: Geomathematically Oriented Potential Theory, Pure and Applied Mathematics, Chapman & Hall/CRC, 468 pp., 2012. a
Freeden, W., Gervens, T., and Schreiner, M.: Constructive Approximation on the Sphere (With Applications to Geomathematics), Oxford Science Publications, Clarendon Press, 444 pp., 1998. a
Short summary
The extraction of the magnetic signal induced by the oceanic M2 tide is typically based solely on the temporal periodicity of the signal. Here, we propose a system of tailored trial functions that additionally takes the spatial constraint into account that the sources of the signal are localized within the oceans. This construction requires knowledge of the underlying conductivity model but not of the inducing tidal current velocity.