Dunes in the world’s big rivers are characterized by low-angle lee-side slopes and a complex shape

Julia Cisneros, Jim Best, Thaiënne van Dijk, Renato Paes de Almeida, Mario Amsler, Justin Boldt, Bernardo Freitas, Cristiano Galeazzi, Richard Huizinga, Marco Ianniruberto, Hongbo Ma, Jeffrey A. Nittrouer, Kevin Oberg, Oscar Orfeo, Dan Parsons, Ricardo Szupiany, Ping Wang, Yuanfeng Zhang