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Curiosity Rover Uncovers 3.7-Billion-Year-Old Ripples That Suggest Mars Once Had Ice-Free Lakes
Ancient ripples suggest a warmer, wetter past for the Red Planet that supported open water on its surface.
Nature4y
Coastal Dunes: Aeolian Transport
The difference is a matter of size: ripples are small ridges of sand with a height (amplitude) typically less than 4 cm and wave lengths (crest to crest) less than 60 cm, while dunes have the same ...
Ancient wave ripples in Mars indicate the presence of an ancient lake with up to 2 meters of water
"The shape of the ripples unequivocally indicates the presence of water in lakes that was subjected to wind influence".
Frozen in time: Rock fossils hint at Mars's ancient climate
L ong ago, flowing wind and water shaped Mars's malleable sand and sediment into dunes, ripples and other landscape patterns, ...
Signatures of ice-free ancient ponds and lakes found on Mars
Researchers have discovered two sets of ancient wave ripples on Mars, signatures of long-dried bodies of water preserved in ...