tsunami, electromagnetic induction, seafloor observation, ocean depth, Magnetic fields, Tsunamis, Shoaling, Sea surface, Amplitudes, Arrivals, Propagation, Properties, Depth, Phase velocity, Elevation, Classification, Lead, Height, Case depth, Water scarcity, Ocean currents, Magnetic induction, Electrodynamics, Geomagnetism, Oceans, Geomagnetic field, Predic...