In the Caribbean the strongest possible tsunami

Photo of the island from space.

Photo of the island from space.

January 30, 2013. More than three thousand years ago, the tsunami caused a strong long-term ecological change in the Caribbean.

Scientists came to this conclusion based on the analysis of sediments from coastal lagoons of the island Bonaire, located about 80 km north of Venezuela. Caribbean are generally very sensitive to hurricanes, tsunamis, landslides and flooding.

Over 500 years of documented history on Bonaire never was tsunami, but the organic material in the sediment (animal remains, carbonate minerals) and other factors suggest that the vast wave befell island 3 is 3.3 thousand years ago. Based on the amount of stones that have changed their location, Max Engel of the University of Cologne (Germany) and his colleagues believe that the tsunami height reached 8? 9 pm Wave was at least 250 m inland. Lagoons and flooded the valley a mile or more, and is flat and low-lying southern tip of the island could disappear completely under water.

The disaster is undoubtedly changed the coastal ecosystem and the distribution of sediment. Shortly after the big wave of coral rubble barrier separated the bay, once framed by mangroves, from the open sea, making it extremely salty lagoon, which it remains to this day.

But where did it tsunami? The most likely source of the researchers believe the earthquake on the southern boundary of the Caribbean plate, that is, on the coast of Venezuela. In the historical records preserved mention of the tsunami in 1530, which was caused by a push near the Venezuelan city of Cumana.

See also: A giant rift in the bottom of the Caribbean Sea

You can not ignore the probability of an earthquake in the north-eastern borders of the same plate. For example, in 1867, a push in the east of the Strait of Anegada British Virgin Islands led to a tsunami that swept across the Caribbean.

Another reason could be the active submarine volcanoes in the southern part of the Antilles, although the tsunami generated by these processes are usually local.

It is possible that this was a "teletsunami" which appeared on the other side of the Atlantic. According to Mr. Engel, computer models show that the collapse in the sea slope of the Cumbre Vieja volcano in the Canary Islands can cause wave that will reach a height of several meters, even when cross the Atlantic Ocean and closer to the Caribbean and the southern shores of North America.

See also: China and the Myth invest in the Caribbean with a view to reducing and preventing climate change

In short, contrary to popular belief, the tsunami on Bonaire possible. Probably the same situation with other islands. It's time to take action.

The study is published in the journal Naturwissenschaften.

Based on: Our Amazing Planet
Source: Kompyulenta

Like this post? Please share to your friends: