Bay
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Bay
Upper New York Bay and the Hudson River in the foreground; the East River is in the background.
The bay at San Sebastián, Spain
The bay of Baracoa, Cuba

A bay is a recessed, coastal body of water that directly connects to a larger main body of water, such as an ocean, a lake, or another bay.[1][2][3] A large bay is usually called a gulf, sea, sound, or bight. A cove is a type of smaller bay with a circular inlet and narrow entrance. A fjord is a particularly steep bay shaped by glacial activity.

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.

The land surrounding a bay often reduces the strength of winds and blocks waves. Bays were significant in the history of human settlement because they provided safe places for fishing. Later they were important in the development of sea trade as the safe anchorage they provide encouraged their selection as ports.[4]

Definition

The United Nations Convention on the Law of the Sea (UNCLOS), also called the Law of the Sea, defines a bay as a well-marked indentation whose penetration is in such proportion to the width of its mouth as to contain land-locked waters and constitute more than a mere curvature of the coast. An indentation shall not, however, be regarded as a bay unless its area is as large as, or larger than, that of the semi-circle whose diameter is a line drawn across the mouth of that indentation.

Formation

There are various ways in which bays can form. The largest bays have developed through plate tectonics.[4] As the super-continent Pangaea broke up along curved and indented fault lines, the continents moved apart and left large bays; these include the Gulf of Guinea, the Gulf of Mexico, and the Bay of Bengal, which is the world's largest bay.[4]

Bays also form through coastal erosion by rivers and glaciers.[4] A bay formed by a glacier is a fjord. Rias are created by rivers and are characterised by more gradual slopes. Deposits of softer rocks erode more rapidly, forming bays, while harder rocks erode less quickly, leaving headlands.

See also

References

  1. ^ "Definition of BAY". Merriam-Webster.com. Retrieved 2017.
  2. ^ a b "Chesapeake Bay, Maryland". Maryland Manual On-Line. Maryland State Archives. November 28, 2016. Retrieved 2017.
  3. ^ ""bay"". Dictionary.com Unabridged. Random House, Inc. Retrieved 2017.
  4. ^ a b c d Carreck, Rosalind, ed. (1982). The Family Encyclopedia of Natural History. The Hamlyn Publishing Group. p. 202. ISBN 978-0-11-202257-2.

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.

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