Benjy Marks publishes paper on granular segregation in avalanches:
Marks, B., Eriksen, J., Dumazer, G., Sandnes, B., and Måløy, K. (2017). Size segregation of intruders in perpetual granular avalanches. J. Fluid Mech., 825, 502-514. doi:10.1017/jfm.2017.419
Download preprint: Marks-JFM2017preprint