The article scrutinizes stratigraphy, morphology, and origin of the terraced underwater slope of the Sambia Peninsula next to the Taran Cape, the SE Baltic Sea, using a combination of multi-beam and single-beam bathymetry, side-scan sonar survey, CHIRP, single-channel seismoacoustic data, and sediment grain-size results. The underwater slope and its minor landforms were formed by changes of a relative sea-level during the Late Pleistocene and Holocene. Landforms, such as terraces and palaeo cliffs, sinks, remnants, stacks, karst sinkholes, ravines, cuestas, and drowned valleys, are associated with positions of older shorelines, sea-level changes and outcropped Pre-Quaternary formations. Six main stages of the underwater slope development have been recognized. The most important topographic feature is a high palaeo cliff (10 m high) with its toe at a water depth of 26–34 m. The cliff was cut in Cretaceous deposits and has different age and origin in different locations. Its northern sector with a toe at a depth of 34–35 m is polygenetic, formed by tectonic faulting and subsequent abrasion at the Baltic Ice Lake stage. The southern sector, with a toe at a depth of 26–27 m, was cut by wave erosion at the Ancylus Lake stage. Terraces on the underwater slope at depths of 29 m, 34 m, 40 m, 43 m, 48 m and 52 m b.s.l. were formed probably by the Baltic Ice Lake and Yoldia Sea transgressions and survived owing to relatively rapid and short changes of the sea-level. At a depth of 0–26 m, at a sea-level slowstand, selective erosion formed a transgressive wave ravinement surface with karst and cuesta-like landforms on monoclinal Paleogene beds. The depths and the locations of described terraces and palaeo cliffs in the SE Baltic Sea allow us to rectify the relative sea-level curve for the Late Pleistocene-Holocene.

本文结合多波束和单波束测深、侧扫声纳测量、CHIRP、单通道地震声学数据和沉积物粒度结果。水下斜坡及其小地貌是由晚更新世和全新世相对海平面的变化形成的。地貌，如梯田和古悬崖、水槽、遗迹、堆积、喀斯特落水洞、沟壑、cuestas 和淹死的山谷与老海岸线的位置、海平面变化和露头的第四纪前地层有关。水下边坡发展的六个主要阶段已经得到认可。最重要的地形特征是一个高古悬崖（高 10 m），其脚趾位于水深 26-34 m 处。悬崖在白垩纪沉积物中切割，在不同的地点有不同的年龄和起源。其北部的趾部深度为 34-35 m 是多生的，由波罗的海冰湖的构造断层和随后的磨损形成阶段。南部部分的趾部深度为 26-27 m，在 Ancylus 湖阶段被波浪侵蚀切割。29 m、34 m、40 m、43 m、48 m和52 m bsl深度的水下斜坡上的梯田可能是由波罗的海冰湖和约尔迪亚海的海侵形成的，由于海水变化相对较快和较短而得以幸存-等级。在 0～26 m 深度，在海平面缓坡上，选择性侵蚀形成单斜古近系层岩溶和类库斯塔地貌的海侵波壑壑面。波罗的海东南部所描述的阶地和古悬崖的深度和位置使我们能够纠正晚更新世-全新世的相对海平面曲线。