Moored array oscillation under strong currents during fair weather

Sensors attached to a vertically moored array showed large variability in the depth values (similar to 13 m) as recorded by CTDs. During the observational period, though fair weather conditions prevailed, very strong subsurface currents (> 90 cm/s) with abrupt change in the direction (within 1 h) were noticed. The tidal amplitude in this region was less than 1.5 m, as indicated by the depth sensor attached to the bottom moored acoustic buoy and the ADCP. Hence, the large variability recorded in the depth sensors was attributed to the tilting of the array in the direction of strong subsurface currents.