Ripple marks
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In geology, ripple marks are sedimentary structures and indicate agitation by water or directly by wind.
Ancient wave ripple marks in sandstone, Moenkopi Formation, Capitol Reef National Park, Utah
Ripple marks at Ile Mavert, Hudson Bay
Tidal megaripples in the Random Formation in Newfoundland
Ripple marks in Cretaceous Dakota Formation, east side of Dinosaur Ridge. Scale bar on notebook is 10 cm.
Wind wave
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In fluid dynamics, a wind wave, or wind-generated water wave, is a surface wave that occurs on the free surface of bodies of water as a result of the wind blowing over the water's surface. The contact
Ripple marks
…In geology, ripple marks are sedimentary structures (i.e., bedforms of the lower flow regime) and indicate agitation by water (current or waves) or directly by wind. Current ripple marks, unidirectional ripples, or asymmetrical ripple marks are asymmetrical in profile, with a gentle up-current…
A man standing next to large ocean waves at Porto Covo, Portugal
Aspects of a water wave
NOAA ship Delaware II in bad weather on Georges Bank
Surf on a rocky irregular bottom. Porto Covo, west coast of Portugal