Time has frozen ... Scientists make a "surprising discovery" in the depths of the Black Sea!

 


A new study finds that in a deep part of the Black Sea known as the Danube Fan, the gas hydrate system has not yet adapted to warmer conditions since the Ice Age, which ended about 12,000 years ago.

The researchers confirmed that they found a "very dynamic situation" related to "the development of the Black Sea since the last ice age." Their analysis of the state of gas hydrate deposits - methane trapped in water molecules that appear physically like ice - is a late response to weather phenomena.

The investigators, who use drilling technology, geophysical recording and temperature measurements at the site, said that data from drilling sites in the Romanian section of the Black Sea indicate that levels of free methane below the sea floor do not match those at other sites.

The researchers stated in their study: "This indicates that the gas hydrate system in the Danube Fan in the deep sea is still responding to the climatic changes that began at the end of the last pack ice (Ice Age)."

An important part of their study relates to the "gas hydrate stabilization zone" which is the lowest point at which gas hydrates form naturally due to temperature and pressure.

"From our point of view, the stability limits for gas and hydrates are already close to warmer conditions in the Earth's interior, but free methane gas, which is always present at this lower edge, has not yet been able to rise with it," said Michael Riedel, one of the authors involved in the study.

It should be noted that the environment of the Black Sea itself has changed dramatically since the last Ice Age. Sea levels are also 100 meters higher. The salt water from the Mediterranean has spread the former lake-like body and global warming has caused the water floor to warm.

The study sheds light on the complex interactions and time scales of climate change on marine environments, and provides more data on the expected consequences of climate change in the modern era.

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