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Mars was once hit by two “mega-tsunamis,” evidence shows

by Joey Davidson | May 20, 2016May 20, 2016 12:00 pm PST

Mars as it may have looked

More evidence has mounted regarding the once aquatic nature of the Martian landscape. This time, geologic mapping suggests that the planet once saw the rise of two “mega-tsunamis.”

Planetary Science Institute Senior Scientist J. Alexis Palmero Rodriguez, lead on a paper produced in Nature Scientific Reports, points to two separate tsunami events. Rodriguez indicates that it’s been tough to consistently “identify shoreline features” on the surface of Mars. The inability to find these shorelines has undermined “the hypothesis that a vast ocean existed on Mars approximately 3.4 billion years ago.” These new reports, though, present a solution to that problem.

“Our discovery offers a simple solution to this problem; widespread tsunami deposits distributed within a wide range of elevations likely characterize the shorelines of early Martian oceans.”

These two mega-tsunamis were likely millions of years apart. According to the report, their wave heights onshore capped around 120 meters and the tsunamis actually went several hundred kilometers inland. The report, written up on the Planetary Science Institute, includes a map of the United States that shows how much of the western part of the country would be affected by tsunamis of this size.

Tsunami US Map

They were massive, and that’s what’s made it hard to identify distinct shorelines along the Martian northern plains.

The cause for the tsunamis? The report hypothesizes massive bolide impacts, or meteor strikes.

Whatever the cause, the result is sort of mind-numbing.

PSI PSI.edu ESO

Joey Davidson

Joey Davidson leads the gaming department here on TechnoBuffalo. He's been covering games online for more than 10 years, and he's a lover of all...

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