sand ripples

Dune surface waves

Sand ripples are the small, regularly spaced ridges that form on sandy surfaces when wind or water flows across them.

The pattern emerges from the interaction between moving fluid and loose grains—each ripple creates turbulence that shapes the next.

You see them on beaches, dunes, and riverbeds: The sand ripples caught the morning light.

Related

wind · wind patterns · beach · desert · texture · undulating · grooves · patterns · tide · ocean floor · shore · erosion · grain · fine grain · sediment · crests · troughs · coastline

Categories
Opposites
surface texture

sand ripplespolished surface

Smooth, lustrous exterior

level ground · flat surface · flat terrain · hardpan · wet sand

formation process

sand ripplesbedrock

Solid stone underground

solid rock · pavement · concrete · packed earth

geological surface features

sand ripplesbedrock

Solid stone underground

hardpan · bare rock · mudflat · salt flat

Family

sand, sands, sandy, sandier, sandiest, sandiness, sanded, sanding, ripple

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G