Friday, October 25, 2013

A Study of Bathymetric Mapping

1. 
How can ocean floor features be measured and mapped using current acoustical technology? Sonar. we send sound waves to the ocean floor and see how long it takes them to bounce and come back. Once we have how long it took and how fast the sound waves traveled we can find the distance. How can ocean floor maps be used in the commercial, military, and/or private sectors? For commercial use, water depth, finding fish, and determining ocean sediments. In the military, every peice of the ocean floor needs to be known to the military. 

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Flat Abyssal Plain: instead of being rugged, like along the mid-ocean ridges, sediments fall almost like snow, creating a flat plain on the ocean floor

Underwater Seamount: An underwater mountain rising from the ocean floor and having a peaked or flat-topped summit below the surface of the sea.


Continental Shelf: A submerged border of a continent that slopes gradually and extends to a point of steeper descent to the ocean bottom. 

Submarine Canyon: any of a class of narrow, steep-sided valleys that originate on the continental shelf and cut into continental slopes and continental rises of the oceans
Mid-Ocean Ridge: A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics.
Island Arc System: an arc-shaped chain of islands, such as the Aleutian Islands or the Japanese Islands, usually lying at the edge of a Benioff zone, indicating volcanic activity where the oceanic lithosphere is descending into the earth's interior

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