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'Wave of Poseidon' Was Real Tsunami
The News - Natural Disasters
April 20, 2012
greek coast
When the ocean rose up and saved a Greek town from a marauding Persian army nearly 2,500 years ago, renowned Greek historian Herodotus chalked it up to an act of the gods.

Yet new evidence suggests his account of divine intervention is firmly rooted in the earthly realm, and was actually a tsunami, according to a researcher who spoke here today (April 19) at the annual meeting of the Seismological Society of America.

"This is historical stuff, but you have to interpret it in a scientific way," said Klaus Reicherter of Germany's Aachen University, who studied geological evidence of the event. [LS]

Ancient Greek Tsunami

Some 50 years after the 479 B.C. event, Herodotus wrote his account. "There came to be a great ebb of the sea backwards, which lasted for a long time," he wrote. 

This figure shows the study area in Greece (Thermaikos Gulf). Red stars indicate drilling sites, where researchers have found high-energy layers, which are interpreted a of a <i>tsunami origin</i>.
This figure shows the study area in Greece (Thermaikos Gulf). Red stars indicate drilling sites, where researchers have found high-energy layers, which are interpreted a of a tsunami origin.
CREDIT: Klaus Reicherter, RWTH Aachen University
View full size image

As the sea rolled back before them, the Persians surged forward toward modern-day Kassandra, a peninsula in northern Greece, to finish a town now called Nea Potidea. But before the invaders could reach dry land, their good luck turned sour.

"Then there came upon them a great flood-tide of the sea, higher than ever before, as the natives of the place say, though high tides come often," Herodotus wrote. The Persians were washed away and the town was saved.

Herodotus, like the villagers, saw the savior wave as the avenging hand of Poseidon, god of the sea, punishing the invaders for some offense, but Reicherter said the account accurately describes the phases of a tsunami. Tsunamis, he said, pose a far greater threat to the northern Aegean Sea region than many realize.

"We wanted to see if these historical accounts are correct and then try to get an assessment of the coastal areas — are they safe or are they not safe?" Reicherter said. The question is especially important in light of the region's popularity with beachgoers during summer months, he added. 

Tsunami forensics

The telltale signs of tsunami action are buried not just in ancient texts but in the ground near the town described by Herodotus, where research teams uncovered layers of sand apparently carried far inland by a tsunami.

Furthermore, geological conditions in the area would have provided the ideal means for producing large waves, Reicherter told OurAmazingPlanet.

The image shows excavated deposits that provided evidence of the ancient tsunami.
The image shows excavated deposits that provided evidence of the ancient tsunami.
CREDIT: Klaus Reicherter, RWTH Aachen University
View full size image

Earthquakes and landslides in the region, combined with a colossal, bathtub-shaped basin in the seafloor near the northwestern Greek coast, are capable of producing tsunamis from 7 to 16 feet (2 to 5 meters) high, according to models Reicherter and colleagues ran based on available data.

To further back their suspicions, the team dated shells found in the sand deposited by the tsunami. "They fit quite nicely: around 500 B.C., plus or minus 25 to 30 years," Reicherter said.

The research is part of an ongoing effort to hunt down and assess ancient tsunamis. The work can help show what areas are vulnerable to damaging waves and can help officials better prepare for the next big one, Reicherter said.

 
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Nostradamus - 2012 - Armageddon Events - End of the World Scenarios - Natural Disasters