摘要: A new, very simple and dependable field sediment sampler has been developed. It is a multi-siphon device that samples suspended sand from seven elevations simultaneously. The 65 concentration profiles that have been obtained so fa... 展开 A new, very simple and dependable field sediment sampler has been developed. It is a multi-siphon device that samples suspended sand from seven elevations simultaneously. The 65 concentration profiles that have been obtained so far are presented, complete with hydrodynamics and bed sediment data. The profiles were measured under breaking and non-breaking waves in a wide rage of coastal environments all over Australia. These data together with a review of oscillatory boundary layer flow and the motion of suspended sand in an accelerated non-uniform flow lead to a range of new insights into the processes of sediment entrainment under waves. (Author) 收起