We report cross-shore profile evolution at Palanga, eastern Baltic Sea, where short period waves dominate. Cross-shore profile studies began directly after a significant coastal erosion event caused by storm “Anatol”, in December of 1999, and continued for a year. Further measurements were undertaken sixteen years later. Cross-shore profile changes were described, and cross-shore transport rates were calculated. A K-means clustering technique was applied to determine sections of the profile with the same development tendencies. Profile evolution was strongly influenced by the depth of closure which is constrained by a moraine layer, and the presence of a groyne. The method used divided the profile into four clusters: the first cluster in the deepest water represents profile evolution limited by the depth of closure, and the second and third are mainly affected by processes induced by wind, wave and water level changes. The most intensive sediment volume changes were observed directly after the coastal erosion event. The largest sand accumulation was in the fourth profile cluster, which includes the upper beach and dunes. Seaward extension of the dune system caused a narrowing of the visible beach, which has led to an increased sand volume (accretion) being misinterpreted as erosion

中文翻译：

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极端侵蚀事件发生后跨岸剖面演变—立陶宛帕兰加

我们报告了波罗的海东部帕兰加的跨岸剖面演变，短波占主导地位。跨海岸剖面研究是在1999年12月由“阿纳托尔”风暴引起的重大海岸侵蚀事件之后立即开始的，并持续了一年。十六年后进行了进一步的测量。描述了跨岸剖面的变化，并计算了跨岸运输速率。应用K均值聚类技术确定具有相同发展趋势的剖面剖面。轮廓的演变受封闭深度的影响，封闭深度受冰ora层的限制，以及防波堤的存在。所使用的方法将剖面分为四个类：最深水中的第一个类表示由封闭深度限制的剖面演化，第二和第三主要受风，浪和水位变化引起的过程的影响。在沿海侵蚀事件发生后，立即观察到最强烈的沉积物体积变化。最大的沙子堆积是在第四剖面群中，其中包括上海滩和沙丘。沙丘系统的向海延伸导致可见海滩的变窄，这导致增加的砂体积（吸积）被误认为是侵蚀