Debouch
In hydrology, a debouch (or debouche) is a place where runoff from a small, confined space discharges into a larger, broader body of water. The word is derived from the French verb déboucher (French: [debuʃe]), which means "to unblock, to clear". The term also has a military usage.[1]
Geology
In fluvial geomorphology, a debouch is a place where runoff from a small, confined space emerges into a larger, broader space. Common examples are when a stream runs into a river or when a river runs into an ocean. Debouching can generate massive amounts of sediment transport. When a narrow stream travels down a mountain pass into a basin, an alluvial fan will form from the mass deposit of the sediment. The four largest rivers (the Amazon, the Ganges, the Yangtze and the Yellow) are responsible for 20% of the global discharge of sediment in to the oceans by debouches.[2]
Geography
In
Military
In military usage of debouch: as a noun, a fortification at the end of a defile is sometimes known as a debouch; and as a verb, soldiers emerging from a narrow space and spreading out are also said to "debouch".[4]
See also
- Fluvial landforms of streams
- Region of freshwater influence
References
- .
- ^ "debouch as a noun". Oxford English Dictionary. Retrieved October 10, 2012.
- ^ Mitchell, Martha S. (May–June 2000). River Rules: The Nature of Streams. p. 5. Archived from the original on January 1, 2005.
{{cite book}}:|work=ignored (help) - ^ "debouch as a verb". Oxford English Dictionary. Retrieved October 10, 2012.
External links
Definitions from Wiktionary
Media from Commons
Data from Wikidata
- "debouch". Merriam-Webster. Retrieved October 10, 2012.
