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Astoria Canyon is a
Astoria Canyon is a submarine canyon
A submarine canyon is a steep-sided valley cut into the seabed of the continental slope, sometimes extending well onto the continental shelf, having nearly vertical walls, and occasionally having canyon wall heights of up to 5 km, from c ...
10 miles (16 km) offshore from the mouth of the Columbia River.
See also
*Astoria Fan
The Astoria Fan is a submarine fan. It has sediment, radiating asymmetrically southward from the mouth of the Astoria Canyon. From Astoria Canyon's mouth, the fan extends about to its western end, which is the Cascadia Channel. The fan proper en ...
External links
* https://web.archive.org/web/20050902223250/http://newport.pmel.noaa.gov/heceta/oceanexploration.htm Geography of the Pacific Northwest Submarine canyons of the Pacific Ocean {{marine-geo-stub