M. White et Ae. Hay, DENSE OVERFLOW INTO A LARGE SILLED EMBAYMENT - TIDAL MODULATION, FRONTS AND BASIN MODES, Journal of marine research, 52(3), 1994, pp. 459-487
A dense bottom overflow into a 100-km scale silled embayment has been
observed for a 70-day period using a coherent array of current meters
and thermistor chains. As the internal Rossby radius is less than the
width of the bay, the overflow is controlled by rotational dynamics. T
he flow is strongly modulated by the tide at diurnal, semi-diurnal and
fortnightly periods. This causes a series of cold temperature fronts,
associated with separate overflow events, to pass through the mooring
array. The overflow is also modulated at periods of 2-3 days. This ap
pears to be associated with the interaction of the density current wit
h bottom-trapped waves, or possibly with interior basin modes. It appe
ars that the forcing of the oscillation is associated with the wind, w
hich also contains a 3-d signal.