International team of scientists studying the structure.one of the surviving coastal caves, showed that about three million years ago, when the Earth was several degrees Celsius warmer than in the pre-industrial era, the sea level was as much as 16 meters higher than in our time. In this regard, let's try together to imagine what would happen on the planet if the sea level rose again to such a record?
Scientists have found new evidence of a global flood
Researches of deposits from the cave of Arta on the islandMallorca allowed scientists from the University of New Mexico to conclude that in the average Piacin period that reigned on our planet about three million years ago, sea level was about 16.2 meters higher than the modern one.
The study included working with cavemensediments known as phreatic thickets on speleotems. Similar deposits are most often formed in coastal caves on the border between brackish water and cave air each time that ancient caves are flooded due to periodic sea level rise. In the cave of Arta, which is located within a hundred meters from the coast, the groundwater level coincides with the level that existed in the distant past of the planet.
Scientists have discovered and analyzed sixgeological formations found at altitudes from 22.5 to 32 meters above sea level. A thorough laboratory analysis of 70 samples indicated their age, which ranged from 4.4 to 3.3 million years BC. e., which indicates that these cave deposits formed in the Pliocene era. The age of the structures was determined using uranium-lead radiometric dating in the radiogenic isotope laboratory of the University of South Florida.
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Researchers believe that increasing the averagetemperatures on the planet to the level that we are striving for now, approximately corresponds to the temperatures that existed in the so-called Piacin warm period, when the temperature was 2-3 ° Celsius higher than in pre-industrial times. In addition, according to studies, we are already experiencing the level of carbon dioxide content similar to the Pliocene epoch today.
In other words, even if atmospheric CO2 stabilizes around current levels, the global average sea level will still rise at least by the sea level of the Pliocene epoch.
What happens if sea level rises 16 meters?
Current melting patterns show that a sharp rise in sea level is likely to be caused by the collapse of the ice of Greenland and the West Antarctic ice sheets.
A sharp rise in sea level will leadto a change in the shape of the continents, slightly modifying the world map. So, the first cities to go under water will be Venice and London. Entire countries — the Netherlands and Denmark — will disappear behind them, taking with them the entire Atlantic coast of the USA and Florida. Russia, in turn, will lose such cities as Arkhangelsk, St. Petersburg and Vladivostok. Not the most pleasant prospect ...
Well, let's try together to think about a plan to save the glaciers of our planet in our Telegram chat or on the Yandex.Zen channel.