Infragravity waves are surface waves with relatively longer periods in comparison to periods of the spectrum-dominant gravity waves. They are characterized by oscillations between 20 and 300 seconds (0.0033 Hz < f < 0.05 Hz), amplitudes that range from a few millimeters to tens of centimeters, and wavelengths of kilometers. Implementing optimal sampling strategies for observing and characterizing infragravity waves might be a challenging. This study explores multi-sensor (ADCP, Quartz Pressure, Wave Buoy) in-situ deployments conducted at four selected sites off the Belgian coast. Results focus on detection of infragravity waves in both calm as storm periods. Conclusions reveal new insight on the occurrence of infragravity waves along the Belgian coast, their magnitude, generation, propagation, and relationship with sea swell waves and bathymetric features along the Belgian Coast.
