MARIANA TRENCH.

 MARIANA  TRENCH.



The Mariana Trench is an ocenic trennch located in the western pacific ocean, about 200 kilometers oceanic trench on earth.it is crescent-sharped and measurs about 2,550 Km[1,580 mi] in length and 69 Km in width .The maximum known depth is 10,984 ± 25 metres at the southern end of a small slot-shaped valley in its floor known as the challenger Deep.The deepest point of the trench is more than 2 Km father from sea level than the peak of mount Everest.

At the bottom of the trench ,the water column above exerts a pressure of 1.086 bar more than ,1.071 times.the standard atmospheric pressure at sea level .the density of water is increaced by 4.96% the temperature at the bottom is 1 to 4 °C.in 2009 the Mariana Trench was a US National Moument .

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