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Pamlico Sound
Pamlico Sound ( ) in North Carolina in the US is the largest lagoon along the North American East Coast, extending long and 24 to 48 km (15 to 20 miles) wide. It is part of a large, interconnected network of lagoon estuaries that includes Albemarle Sound, Currituck Sound, Croatan Sound, Pamlico Sound, Bogue Sound, Core Sound, and Roanoke Sound.〔〔 Together, these sounds, known as the Albemarle-Pamlico sound system, comprise the second largest estuary in the United States, covering over 3,000 sq. mi. of open water.(Chesapeake Bay is the largest.) The Pamlico Sound is separated from the Atlantic Ocean by the Outer Banks, a row of low, sandy barrier islands that include Cape Hatteras National Seashore, Cape Lookout National Seashore, and Pea Island National Wildlife Refuge. The Albemarle-Pamlico Sound is one of nineteen great waters recognized by the America's Great Waters Coalition.
== Hydrology ==
Pamlico Sound is connected to the north with Albemarle Sound through passages provided by the Roanoke Sound and Croatan Sound. Core Sound is located at the Pamlico's narrow southern end.〔(【引用サイトリンク】url=http://omp.gso.uri.edu/ompweb/doee/science/descript/albpam.htm )〕〔(【引用サイトリンク】url=http://www.outerbanks.com/pamlico-sound.html )〕 It is fed by the Neuse and Pamlico rivers (the latter of which is the estuary of the Tar River) from the west and by Oregon Inlet, Hatteras Inlet, and Ocracoke Inlet, which also provide passage to the Atlantic Ocean.〔 The salinity of the sound averages 20 ppt, compared to an average coastal salinity of 35 ppt in the Atlantic and 3 ppt in the Currituck Sound, which is located north of the Albemarle Sound.〔
The sound and its ocean inlets are noted for wide expanses of shallow water and occasional shoaling, making the area hazardous for larger vessels. While the deepest hole of the estuary (26') can be found in the Pamlico Sound, depths generally range from In addition, the shallow waters are susceptible to wind and barometric pressure-driven tidal fluctuations. This effect is amplified on the tributary rivers, where water levels can change by as much as two feet in three hours when winds are aligned with the rivers' axes and are blowing strongly.〔〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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