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1975, Texas A & M University. College of Geosciences, Contributions in Oceanography:
Heavy line segments (lengthened for clarity) indicate locations of deep-sea dunes.
2021 February 23, Etienne Guyon, Jose Bico, Etienne Reyssat, Benoit Roman, Hidden Wonders: The Subtle Dialogue Between Physics and Elegance, MIT Press, →ISBN, page 257:
In the early 2000s, space probes [confirmed Mars as] having dunes[…] Their shapes are identical to their Saharan cousins', but they are ten times bigger. In contrast, underwater dunes are a hundred times smaller than their counterparts on solid ground. This universality of dunes is a blessing for physicists: their comparative study confirmed the models that describe the formation of dunes on Earth.