“…Thus, there is a severe lack of detailed simultaneous observations of suspended sediment and sheet flow processes under realistic wave forcing. Since 2009 when the SANTOSS database was compiled, several more small-scale (Berni et al, 2013(Berni et al, , 2017 and large-scale (Anderson et al, 2017;Brinkkemper et al, 2017;Mieras et al, 2017a;Schretlen, 2012;van der Zanden, van der A, Hurther, Cáceres, O'Donoghue, Hulscher, et al, 2017;Yoon & Cox, 2012) wave flume studies have contributed to fill the gap in full-scale surface wave experiments in the sheet flow regime. Recent development of a new sensor, the conductivity concentration profiler (CCP; Lanckriet et al, 2013), has enabled instantaneous sediment concentration profiles in the sheet flow layer to be measured with high resolution in the swash zone (field and large wave flume; Lanckriet et al, 2014;Puleo et al, 2014Puleo et al, , 2016 and the shoaling/surf zone (large wave flume; Anderson et al, 2017;Mieras et al, 2017a).…”