Cross-plane particle image velocimetry measurements of the flow structure associated with interacting barchan dunes in a refractive index matched flume

Nathaniel Bristow1, Gianluca Blois1, Kenneth T Christensen1 and Jim Best2, (1)University of Notre Dame, Notre Dame, IN, United States, (2)Univ. Illinois at Urbana Champaign, Geology, Geography & GIS, Mechanical Science and Engineering and Ven Te Chow Hydrosystems Laboratory, Champaign, IL, United States