What is the salinity of the Mariana Trench?

Salinity increased down to 6020–6320 db, and then stayed almost constant down to around 9000 db. From 9500 db to the bottom, salinity increased up to 34.703 psu at 11197 db.

How much pressure is in the hadal zone?

~600 to 1100 atm
The pressure found at hadal depths ranges from ~600 to 1100 atm (6000 m to 11 000 m).

What are the characteristics of the hadal zone?

Like the rest of the deep sea, the hadal zone is an extreme environment characterized by the lack of natural light, low food availability and high levels of hydrostatic pressure increasing one atmospheres every 10 meters. These conditions make for a challenging environment for life to thrive in.

What is significant about the hadal zone?

Deep sea trenches of the hadal depth zone (6-11 km) are hotspots for high microbial activity because they receive an unusually high flux of organic matter, made up of animal carcasses, and sinking algae, originating from the surrounding shallower seabeds.

Which sea has the highest salinity?

Of the five ocean basins, the Atlantic Ocean is the saltiest. On average, there is a distinct decrease of salinity near the equator and at both poles, although for different reasons. Near the equator, the tropics receive the most rain on a consistent basis.

Which ocean has salinity more than 37?

the Atlantic have the highest salinity, higher than 37 parts per thousand in some areas. This is because, on average, there is more evaporation than combined rainfall and river runoff into the Atlantic Ocean, maintaining.

What is the temperature of the water in the hadal zone?

4°C
The deepest part of the pelagic zone of the ocean, extending from a depth of 6000 m to the bottom of oceanic trenches up to 11 000 m below the surface. Conditions in the hadalpelagic zone are extreme. No sunlight penetrates, the temperature is a constant 4°C, and the pressure is 60–110 MPa. See ocean divisions.

Is there anything deeper than the hadal zone?

Depths from the surface to 0.2km is known as the “littoral zone”, from 0.2km to 3km, the “bathyal zone”, and from 3km to 6km, the “abyssal zone”. Anything deeper than that is the “hadal zone”.

Which sea has highest salinity?