Oceanographers explain the age of the oldest water in the ocean

The award-winning edition of Nature published the results of research of experts who studied the circulation of the water within the world’s oceans. Scientists have proven that cold Antarctic waters never rise to the surface of the oceans, and called the age of the oldest water.


In the course of their research, a team of scientists representing the University of New Wales, undertook a study of water circulation within the global oceans. They studied the movement of the ice streams of Antarctica, where the temperature is on the verge of zero, slightly above the limit of freezing of salt water, so their density makes mass to fall to the bottom. Scientists were able to prove that at a depth of more than 4 kilometres of Antarctic waters begin their journey to the North, and the movement of water flows, to the South, is at a depth of more than 2.5 kilometers. Researchers have shown that in the interval from 2.5 to 1 km is a layer of water, which practically does not circulate.

According to the findings of scientists to the molecule from such a “dead” layer of water to get to the surface of the ocean, you will need about 1.5 thousand years, which means that water molecules rising to the surface of the ocean, watching the sunlight still 1.5 thousand years ago. Scientific studies are important in understanding the influence of oceans on the Earth’s climate.