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

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