Fig. 11
Estimated Root Mean Square spectrum of pore pressure time series measured in BDB-1 borehole between 01/09/2014 and 10/03/2015. The following tides are observable: principal lunar semidiurnal tide M2 (2.236 × 10−5 Hz) and solar semidiurnal tide S2 (2.315 × 10−5 Hz), lunar diurnal tides K1 (1.161 × 10−5 Hz) and O1 (1.076 × 10−5 Hz), and the solar diurnal components S1 (1.157 × 10−5 Hz) and P1 (1.154 × 10−5 Hz)