Personal Liberty Digest™ will be upgraded this weekend to reflect a dynamic new look and mobile-friendly viewing to enhance your experience! Plus, we'll be providing even more of the compelling content you've come to expect, delivered in a whole new way!

  Comments Subscribe to Personal Liberty News Feed Subscribe to Personal Liberty

Martian Valleys Show Signs Of Possible Erosion From Snowfall

PROVIDENCE, R.I. (UPI) — Some valleys on Mars show signs of having been carved out by meltwater from ancient snowfalls on the Red Planet, U.S. scientists say.

Runoff from orographic precipitation — moisture carried part of the way up a mountain by prevailing winds and deposited as snow on the slopes — appears to have shaped valley networks branching across the martian surface, researchers at Brown University reported Tuesday.

The new findings are the most convincing evidence yet of an orographic effect on ancient Mars and could shed new light on the planet’s early climate and atmosphere, they said.

The scientists ran computer simulations which suggested precipitation would have been heaviest at the heads of the densest valley networks.

“Their drainage density varies in the way you would expect from the complex response of precipitation to topography,” research leader Kat Scanlon, a geological sciences graduate student, said.

“That’s what immediately came to mind in trying to figure out if these valleys on Mars are precipitation related,” she said.

“We were able to confirm that in a pretty solid way.”

The study’s suggestion of precipitation as important in carving the valleys means the findings could provide important insight into the climate on Mars billions of years ago, the researchers said.

UPI - United Press International, Inc.

Since 1907, United Press International (UPI) has been a leading provider of critical information to media outlets, businesses, governments and researchers worldwide.

Facebook Conversations

Join the Discussion:
View Comments to “Martian Valleys Show Signs Of Possible Erosion From Snowfall”

Comment Policy: We encourage an open discussion with a wide range of viewpoints, even extreme ones, but we will not tolerate racism, profanity or slanderous comments toward the author(s) or comment participants. Make your case passionately, but civilly. Please don't stoop to name calling. We use filters for spam protection. If your comment does not appear, it is likely because it violates the above policy or contains links or language typical of spam. We reserve the right to remove comments at our discretion.

Is there news related to personal liberty happening in your area? Contact us at


Sign Up For Personal Liberty Digest™!

PL Badge

Welcome to,
America's #1 Source for Libertarian News!

To join our group of freedom-loving individuals and to get alerts as well as late-breaking conservative news from Personal Liberty Digest™...

Privacy PolicyYou can opt out at any time. We protect your information like a mother hen. We will not sell or rent your email address to anyone for any reason.