Short-lived collapse features affecting the intertidal sandy profile were observed on mud-rich beaches in Cayenne. They were formed in packets of beach sand accumulating over thick (several metres) fluid to under-consolidated foreshore mud, which adjusts to this sand loading by seaward and longshore migration of fluid mud and subsequent in situ mud dewatering, thus generating subsidence and deformation of the overlying sand sheet. These sandy collapse features required active longshore sand transport and were washed out by wave processes at each rising tide. They finally disappeared permanently as adjustment of the underlying mud enabled stabilization of the beach profile. Copyright (c) 2006 John Wiley & Sons, Ltd.
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机译：在卡宴（Cayenne）的泥浆丰富的海滩上观察到了影响潮间带沙质剖面的短暂塌陷特征。它们形成在沙滩沙包中，堆积在厚（几米）的流体中，形成欠固结的前滩泥浆，通过泥浆的向海和近岸迁移以及随后的原地泥浆脱水来适应这种沙子负荷，从而产生沉陷和变形。上面的沙盘。这些沙质塌陷特征需要活跃的近岸沙运，并且在每次涨潮时都被波浪冲刷。随着底层泥浆的调整使海滩轮廓稳定，它们最终永久消失。版权所有（c）2006 John Wiley＆Sons，Ltd.
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