Abstract

During the period 20 July to 8 August 1976, a bottom intrusion of Gulf Stream water was observed in hydrographic data and data from moored current meters from Onslow Bay, North Carolina. The event was the result of southerly winds (upwelling favorable) and Gulf Stream meandering. Offshore (easterly) movement of the Gulf Stream causes an upward movement of isotherms which presents cold, saline water at the shelf break. Once this water is present at the shelf break, some other mechanism, such as southerly winds, is necessary for it to upwell into Onslow Bay. The extent of the upwelling is determined by the intensity and duration of the wind event.

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