Subtidal water flux through a multiple-inlet system: Observations before and during a cold front event and numerical experiments

摘要: [1] This paper examines the net transport through a multiple-inlet bay under combined force of strong wind and tide, with observations model experiment. The were made in central Georgia Sapelo Altamaha Sounds between 13 17 September 2000. Wind was weak beginning survey. An air pressure trough (as cold front) passed area on 16 September, when changed to northeast increased magnitude. This front associated midlatitude cyclone New England area. weather event an episode northeasterly winds prompted numerical experiment idealized three-inlet bay, set nonlinear 2-D shallow water equations f plane, which provides some insight wind-driven circulation presence tidal forcing. It is found that tidally induced currents are small compared wind-induced flows. When direction not perpendicular alignment three inlets, outward flow tends occur at inlet farther away downwind direction. inward opposite As result, middle has minimum flow. barrier islands, if inlets have different maximum depth values, deeper against wind, while shallower wind. Offshore (onshore) may develop outside (inward) flow, as effect fluxes coastal ocean.