Definition For Trench Ocean Floor

Ocean trench synonyms ocean trench pronunciation ocean trench translation english dictionary definition of ocean trench.

Definition for trench ocean floor. Trench definition is a long cut in the ground. A deep furrow or ditch. One used for military defense often with the excavated dirt thrown up in front. Oceanic trenches are topographic depressions of the sea floor relatively narrow in width but very long.

To dig or make a trench or trenches in land or an area for example. Trenched trench ing trench es v tr. The ryukyu trench stretching out from southern japan is formed as the oceanic crust of the philippine plate subducts. To place in a trench.

Look it up now. A long steep sided valley on the ocean floor. Plate tectonics and the ocean floor. A deep furrow or ditch.

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. 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. Oceanic trenches typically extend 3 to 4 km 1 9 to 2 5 mi below the level of the surrounding oceanic floor. Trench a long steep sided depression in the ocean floor.

The deepest ocean depth to be sounded is in the challenger deep of the mariana trench. Some of the most familiar ocean trenches are the result of this type of convergent plate boundary the peru chile trench off the west coast of south america is formed by the oceanic crust of the nazca plate subducting beneath the continental crust of the south american plate. Natural depression depression a sunken or depressed geological formation. How to use trench in a sentence.