Supplementary material to "The OBS noise due to deep ocean currents"

Abstract

showing a complete tide cycle from spring to neap tide and finish in a spring tide to shown that the ocean bottom has a flow regime that may have two contributions, the permanent low frequency bottom current and the tidal current. The recorded noise displays the balance between these two currents along the full tidal cycle, between neap and spring tides. We show, for each day of the tide cycle, the day-plot of the OBS data record with ObsPy software, the normalized spectrograms with GMT (Wessel et al., 2013) and the probabilistic power spectral densities with ObsPy (Krischer et al., 2015). The normalized spectrogram have a tide cycle of that day represented as a black curve.