- The characteristics of the submarine variety and those of the nearby land canyons are quite distinct:
- The submarine canyons, for example, tend to have steeper side slopes, much higher gradients, and considerably narrower floors.
- Moreover, the drainage pattern of submarine canyons differs from that of their terrestrial counterparts.
- The submarine canyons have a substantial number of tributaries at their heads but generally do not have as many tributaries in their lower courses as do the land canyons.
- Even so, many submarine canyons end in a series of distributary channels through the continental rise, and these channels often emerge in the deep sea on abyssal plains that are found adjacent to the continents, especially in the Atlantic basin.
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