Fig. 4
From: Fin whale song recordings by onshore seismometers open new horizons for cetacean coastal monitoring
Fin whale song recorded with an onshore citizen science seismometer at the Copper Coast UNESCO Global Geopark on the southeast coast of Ireland, Bunmahon, County Waterford (see Fig. 2). (a) Spectrogram and (b) corresponding time series of vertical seismic component EHZ, band-pass filtered between 18 and 23 Hz, from station RBB07 equipped with a Raspberry Shake seismometer. Short vertical arrows mark A notes and long vertical arrows mark B notes. A 1024-point fast Fourier transform (FFT) with a Hanning window and 95% overlap was used to create the spectrogram.
