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A Dictionary of Earth Sciences | 1999 | | © A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

channel
1. The preferred linear route along which surface water and groundwater flow is usually concentrated (although water can flow across wide, flat surfaces as sheet flow). It is commonly a linear, concave-based depression (e.g. river channel, submarine fan channel). The geometry may be sinuous, anastomosing, or straight, and with a widely variable width-to-depth ratio. See BRAIDED STREAM; and MEANDER.

2. A narrow seaway connecting two wider bodies of water (e.g. the English Channel).

3. In remote sensing, the range of wavelengths recorded by a single detector to form an image.

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