Definition For Trench Ocean Floor

Trench a long steep sided depression in the ocean floor.

Definition for trench ocean floor. One used for military defense often with the excavated dirt thrown up in front. Ocean trench synonyms ocean trench pronunciation ocean trench translation english dictionary definition of ocean trench. Trench definition a long narrow excavation in the ground the earth from which is thrown up in front to serve as a shelter from enemy fire or attack. Oceanic trenches are topographic depressions of the sea floor relatively narrow in width but very long.

How to use trench in a sentence. The ryukyu trench stretching out from southern japan is formed as the oceanic crust of the philippine plate subducts. A long steep sided valley on the ocean floor. A deep furrow or ditch.

These oceanographic features are the deepest parts of the ocean floor. To dig or make a trench or trenches in land or an area for example. Natural depression depression a sunken or depressed geological formation. Oceanic trenches are a distinctive morphological feature of convergent plate boundaries along which lithospheric plates move towards each other at rates that vary from a few millimeters to over ten centimeters per year.

To place in a trench. Plate tectonics and the ocean floor. Bathymetry the shape of the ocean floor is largely a result of a process called plate tectonics the outer rocky layer of the earth includes about a dozen large sections called tectonic plates that are arranged like a spherical jig saw puzzle floating on top of the earth s hot flowing mantle. The deepest ocean depth to be sounded is in the challenger deep of the mariana trench.

Look it up now. Oceanic trenches typically extend 3 to 4 km 1 9 to 2 5 mi below the level of the surrounding oceanic floor. A deep furrow or ditch. A long narrow ditch embanked with its own soil and used for concealment and protection in warfare.