Unlocking the Mysteries of Sandy "Megaripples"

Sandy beaches are often patterned with sunburned visitors, brightly colored towels, and poorly constructed sand castles. However, the wind can create much more intriguing patterns in sand, from tiny ripples to towering dunes. Sand ripples at the northwest coast of the island Fanø in Denmark. Image Credit: Klaus Kroy. With research coming out soon in the journal Physical Review E, a team of scientists studying one of these sand structures has brought us closer to understanding how wind-blown gra...