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Estuary
Estuary
Estuary
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Estuary

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  • 1. ESTUARY
  • 2. WHAT ARE ESTUARY AND HOW DO THEY FORM• An estuary is a partially enclosed body of water formed where fresh water from land meets and mixes with salt water from the ocean.• As the sea rose it drowned river valleys and filled glacial troughs. Once formed, estuaries make good sediment traps, filling with sediment from both the land and the sea. Sediment from the land include muds and clays delivered by rivers. These is how(Virginia and Maryland) and Galveston Bay (Texas) are classical examples of this type of estuary.
  • 3. FEATURES OF AN ESTUARY • Strong winds that blow across the surface waters of large estuaries may cause water not to circulate. Friction between the wind and surface of the water results in the movement of the surface. • Rivers bring fresh water into the estuary. The freshwater which travel time slows is as it mixes with estuarine water. therefore the water spends some time in the estuary before it gradually exits into coastal waters. rivers provide a continuous input of sediment into the estuary.

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