Day 4

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Paper title Recent progress in mapping ocean tidal magnetic signals with satellite data
  1. Alexander Grayver Institute of Geophysics, Department of Earth Sciences, ETH Zurich Speaker
  2. Nils Olsen DTU Space
  3. Christopher Finlay DTU Space
Form of presentation Poster
  • B2. Earth Explorer missions
    • B2.05 Swarm - ESA's Extremely Versatile Magnetic Field and Geospace Explorer
Abstract text We present new results on the extraction of magnetic signals due to several tidal constituents obtained by analyzing the most recent Swarm data in combination with data from past satellite missions. As we obtain more magnetically quiet data and as better models of the core, crust and magnetospheric field components become available, improvements in resolution and in the signal-to-noise ratio are anticipated for tidal magnetic signals, enhancing the sensitivity to the electrical conductivity of oceanic upper mantle. We show that the extraction of the weaker signals becomes feasible by utilizing longer time series and by including field gradients, which help filter out small scale noise. We also evaluate added value of CryoSat-2 and GRACE-FO platform magnetometer data.