GP43C-1266
Oceanic tidal signals in magnetic satellite data
Thursday, 17 December 2015
Poster Hall (Moscone South)
Ingo Wardinski, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany and Vincent Lesur, Institut de Physique du Globe de Paris, Paris, France
Abstract:
In this study we discuss the observation of oceanic tidal signals in magnetic satellite data. We analyse 10 years of CHAMP satellite data. The detection algorithm is applied on residual signal that remains after the derivation of GRIMM 42 (Lesur et al., 2015). The signals found represent the major tidal constituents, such as the M2 tide. However, other tidal constituents appear to be swallowed by unmodelled external and induced magnetic signal, particularly in equatorial and circumpolar regions. A part of the study also focuses on the temporal variability of the signal detection and its dependence on geomagnetic activity. Possible refinements to the detection algorithm and its applicability to SWARM data are also presented and discussed.
