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An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. [1] Estuaries form a transition zone between river environments and maritime environments and are an example of an ecotone.
Estuaries are extremely productive ecosystems that many humans and animal species rely on for various activities. [17] This can be seen as, of the 32 largest cities in the world, 22 are located on estuaries as they provide many environmental and economic benefits such as crucial habitat for many species, and being economic hubs for many coastal ...
The site (Severn Estuary and Upper Severn Estuary) is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS). [ 22 ] Both SSSI citations provide detail of the geological and biological interest and of particular note is the international importance for wintering and wading birds of passage, [ 1 ] and of estuarine habits ...
The Chesapeake Bay (/ ˈ tʃ ɛ s ə p iː k / CHESS-ə-peek) is the largest estuary in the United States. The bay is located in the Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula, including parts of the Eastern Shore of Maryland, the Eastern Shore of Virginia, and the state of Delaware.
A bay can be the estuary of a river, such as the Chesapeake Bay, an estuary of the Susquehanna River. [2] Bays may also be nested within each other; for example, James Bay is an arm of Hudson Bay in northeastern Canada. Some large bays, such as the Bay of Bengal and Hudson Bay, have varied marine geology. [citation needed]
London Stone, Yantlet Creek. The transition between the Thames Estuary and the North Sea has been located at various notional boundaries, including: [1] The Yantlet Line between the Crow Stone (London Stone) on the northern foreshore at Chalkwell, Westcliff-on-Sea and another London Stone off the Isle of Grain, to the south.
Model of Estuary. The residence time of water is a key variable determining the health of an estuary, particularly from human-induced stresses.Rapid flushing ensures that there is insufficient time for sediment accumulation or dissolved oxygen depletion in the estuary; thus a well flushed estuary is intrinsically more robust than a poorly flushed estuary. [1]
BEBs can exist in large estuaries with narrow entrances, such as the case of the estuaries of the East coast of the US. [25] [26] [3] In this case, locally-generated wind waves represent the most important physical parameter controlling beach morphology. Given the limitations of basin size, it is typically the fetch rather than the wind ...