Wherever there is sand and an atmosphere, prevailing winds may whip the grains into undulating shapes, pleasing to the eye with their calming repetition.
Aside from their size, a key characteristic of these middle-ground ripples is the grain size involved – a surface of coarse grains over an interior of much finer material. Yet this mix of grains is never the same, and nor are the winds that blow across the sand to create the ripples in the first place.
"We found that a characteristic signature of grain-scale transport is encoded in the grain-size distributions that co-evolve with megaripples," write the researchers in their"Our compilation of original and literature data firmly establishes the accuracy and robustness of the theoretical prediction across a wide range of geographic locations and prevailing environmental conditions."As winds whip across the sand, megaripples are caused by fine grains kicking up coarser ones.
Singapore Latest News, Singapore Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
The good news hidden in the bond market’s 2021 lossesYou can’t expect bonds both to be a diversifier in your portfolio and that they should rise when stocks rise.
Read more »
How bomb detectors discovered a hidden pod of singing blue whalesResearchers at the University of New South Wales have detected a new population of pygmy blue whales swimming around in the Indian ocean.
Read more »
China's Chang'e-5 probe finds on-site evidence of water on the Moon's surface | EngadgetChina’s Chang’e-5 lunar lander has found water on the surface of the Moon, marking the first-ever time scientists have found on-site evidence of the substance on Earth’s satellite..
Read more »
Giant galactic bubble is driving star formation, new study findsEarth is surrounded by a vast bubble about 1,000 light-years wide whose borders drive the formation of all nearby young stars, a new study finds.
Read more »
Crypto CEO becomes one of the world's richest billionairesA cryptocurrency CEO has become one of the richest people on Earth.
Read more »
New NASA chief scientist pledges a plan to renew agency's Earth satellite fleetSome of the agency's Earth-observing satellites have been in space for decades.
Read more »