Axar.az
UP

Axar.Az Logo

Evidence of ancient tsunamis on Mars

Home page Science
12 Punto 14 Punto 16 Punto 18 Punto

Evidence points to an ancient tsunami on Mars that cataclysmically altered the young planet approximately 3 billion years ago. This lays credence to the theory that Mars was once a watery world.

Axar.az reports that in a paper published in the Journal of Geophysical Research, the international team detail their discovery of what they believe to be a tsunami impact crater. Proponents of the Wet Mars theory have been searching for such a crater for years, without success.

"We found typical tsunami deposits along the dichotomy between the northern hemisphere and southern hemisphere of Mars. It supports that there was, at that time, a northern ocean," study lead and professor of geophysics with Université Paris-Sud Dr. François Costard told the BBC.

A thumbprint-shaped series of ridges was discovered on the Martian surface, which has previously been attributed to a mudslide or glaciers. However, it may have also have been caused by a tsunami — and a nearby crater corroborates that theory.

When a sufficiently large asteroid hits water, it can create two tsunamis: one caused by the displacement of water when the asteroid hits the ocean's surface and another caused by the asteroid striking the ocean floor.

The researchers suggest that the Lomonosov Crater, a 93-mile long formation named in honor of the 18th century Russian polymath Mikhail Lomonosov, and the thumbprint formation are evidence of the first and second tsunamis, respectively. A numerical model corroborates their findings. They also contend that there is no feasible explanation for the ridges in light of the new evidence.

The Wet Mars theory holds that around 3.8 billion years ago, nearly half of the rusty red world was covered by ocean. Bit by bit, the water turned to vapor and escaped through Mars' thin atmosphere, leaving the planet in its present desiccated state.

"The possibility that a large ocean once occupied the Martian northern plains is one of the most important and controversial hypotheses to have originated from the exploration of Mars," the team wrote in the study.

"We mapped lobate deposits, which appear and are potential tsunami deposits associated with the existence of a former ocean. We identified the most probable crater sources of the proposed tsunami deposits from a numerical modeling."

Date
2017.03.28 / 19:44
Author
Axar.az
Comments
See also

Russian FM begins official visit to UAE

Iran reports 8,313 new COVID-19 cases

Russia reports 10,253 new COVID-19 cases, 379 deaths

A call from the Yemeni government to Houthis

Russia, Belarus will hold a joint military exercise soon

Erdogan says Turkey to back impact investment

Iran approves increase of salaries to aid low income

Armed clashes between STC forces, protesters in Yemen

Weather forecast for tomorrow

Garagoz village of the Zangilan region - Video

Latest
 
Xocalı soyqırımı — 1992-ci il Bağla
Bize yazin Bağla
ArxivBağla