Debouch: Difference between revisions
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{{short description|Water runoff from a smaller place to a larger one}} |
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⚫ | In [[geography]], a |
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In [[hydrology]], a '''debouch''' (or '''debouche''') is a place where [[surface runoff|runoff]] from a small, confined space [[discharge (hydrology)|discharges]] into a larger, broader [[body of water]]. The word is derived from the French verb ''déboucher'' ({{IPA-fr|debuʃe|lang}}), which means "to unblock, to clear". The term also has a military usage.<ref>{{Cite book |last=Ma |first=Yanxia |url=https://scholarworks.wm.edu/etd/1539616757/ |title=Continental Shelf Sediment Transport and Depositional Processes on an Energetic, Active Margin: the Waiapu River Shelf, New Zealand |date=2009 |pages=2, 19 |doi=10.25773/v5-8w3d-wz58}}</ref> |
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==Geology== |
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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 River|Amazon]], the [[Ganges]], the [[Yangtze]] and the [[Yellow River|Yellow]]) are responsible for 20% of the global discharge of sediment in to the oceans by debouches.<ref>{{Cite web |title=debouch as a noun |url=http://www.oed.com/view/Entry/47918?rskey=Lfbkiz&result=1&isAdvanced=false#eid |access-date=2012-10-10 |website=Oxford English Dictionary}}</ref> |
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==Geography== |
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⚫ | In [[fluvial]] [[geography]], a debouch is a place where a body of water pours forth from a narrow opening. Some examples are: where a [[river]] or [[stream]] emerges from a narrow constraining [[landform]], such as a [[Defile (geography)|defile]], into open country or a wider space; a [[Creek (stream)|creek]] joins a [[river]]; or a stream flows into a lake.<ref>{{Cite magazine |last=Mitchell |first=Martha S. |date=May–June 2000 |title=River Rules: The Nature of Streams |url=http://www.forester.net/ec_0005_river.html |archive-url=https://web.archive.org/web/20050101180523/http://www.forester.net/ec_0005_river.html |archive-date=2005-01-01 |magazine=Erosion Control Magazine |page=5}}</ref> |
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==Military== |
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In [[military]] usage of debouch: as a noun, a [[fortification]] at the end of a [[defile (geography)|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".<ref>{{Cite web |title=debouch as a verb |url=http://www.oed.com/view/Entry/47919#eid7298094 |access-date=2012-10-10 |website=Oxford English Dictionary}}</ref> |
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In military usage, a fortification at the end of a defile is sometimes known as a debouch.<ref>[[Oxford English Dictionary]] debouch, as a verb and a noun.</ref> Soldiers emerging from a narrow space are also said to "debouch." |
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==See also== |
==See also== |
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*[[Fluvial landforms of streams]] |
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*[[Region of freshwater influence]] |
*[[Region of freshwater influence]] |
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*{{wiktionary-inline}} |
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==References== |
==References== |
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[[ru:Дебуширование]] |
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*{{Cite web |title=debouch |url=http://www.merriam-webster.com/dictionary/debouch |access-date=2012-10-10 |website=Merriam-Webster}} |
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{{Coastal geography}} |
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[[Category:Fluvial landforms]] |
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[[Category:Rivers]] |
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[[Category:Military terminology]] |
Latest revision as of 15:42, 29 May 2024
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
[edit]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
[edit]In fluvial geography, a debouch is a place where a body of water pours forth from a narrow opening. Some examples are: where a river or stream emerges from a narrow constraining landform, such as a defile, into open country or a wider space; a creek joins a river; or a stream flows into a lake.[3]
Military
[edit]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
[edit]References
[edit]- ^ Ma, Yanxia (2009). Continental Shelf Sediment Transport and Depositional Processes on an Energetic, Active Margin: the Waiapu River Shelf, New Zealand. pp. 2, 19. doi:10.25773/v5-8w3d-wz58.
- ^ "debouch as a noun". Oxford English Dictionary. Retrieved October 10, 2012.
- ^ Mitchell, Martha S. (May–June 2000). "River Rules: The Nature of Streams". Erosion Control Magazine. p. 5. Archived from the original on January 1, 2005.
- ^ "debouch as a verb". Oxford English Dictionary. Retrieved October 10, 2012.
External links
[edit]- "debouch". Merriam-Webster. Retrieved October 10, 2012.