Acoustic and detailed swath bathymetry data revealed a systematic picture of submarine landslides on the Siberian part of Lomonosov Ridge. Whereas numerous studies on mass movement exist along the margin of the Arctic Ocean less is known from central Arctic. A regional survey comprising swath bathymetry, sediment echo sounder and multichannel seismic profiling was performed on the southeastern Lomonosov Ridge. The data provide constraints on the present-day morphology of the Siberian part of Lomonosov Ridge, between 81°–84°N and 140°–146°E. We mapped twelve crescent-shaped escarpments located on both flanks on the crest of Lomonosov Ridge. The escarpments are 2.1 to 10.2 km wide, 1.7 to 8.2 km long and 125 to 851 m high from which 58 to 207 m are occupied by crescent-shaped headscarps. Subbottom data show chaotic reflections within most of the escarpment areas. The unit is overlain by ~110–340 m of semi-coherent parallel reflections. At its bottom the chaotic reflections are limited by a partly eroded high-amplitude reflection sequence that is inclined with <1° basinwards. We find the escarpments to be remnants of submarine landslide events that mobilized 0.09 to 7.58 km³ of sediments between mid Pliocene and mid Miocene. The relatively small amounts of mobilized sediments seem to be typical for the Lomonosov Ridge. The epoch corresponds to the ongoing subsidence of the Lomonosov Ridge below sea level. During that time deposition and the load of sediments changed. We suggest that changes in sediment type preconditioned, and co-occurring earthquakes finally triggered the submarine landslides.

详尽的条幅测深数据显示了罗蒙诺索夫海岭西伯利亚海底滑坡的系统图。鉴于北冰洋边缘存在大量关于质量运动的研究，而对北极中心地区的了解却很少。在东南罗蒙诺索夫海岭上进行了包括测深，测深仪和多通道地震剖面的区域调查。数据提供了罗蒙诺索夫海岭西伯利亚地区今天的形态的限制，在北纬81°-84°和东经140°-146°之间。我们绘制了位于罗蒙诺索夫山脊顶两侧的十二个新月形悬崖。悬崖宽2.1至10.2 km，长1.7至8.2 km，高125至851 m，其中58至207 m被月牙形头皮占据。底下的数据显示了大部分悬崖区域内的混沌反射。该单元被〜110–340 m的半相干平行反射覆盖。在其底部，混沌反射受到部分侵蚀的高振幅反射序列的限制，该序列向后倾斜小于1°。我们发现悬崖是动员0.09至7.58 km的海底滑坡事件的残余在上新世中期和中新世中期之间的沉积物中有^3个。相对较少的动员沉积物似乎是罗蒙诺索夫海岭的典型特征。该时期对应于海平面以下的罗蒙诺索夫海岭的持续沉降。在此期间，沉积物和沉积物的负荷发生了变化。我们建议对沉积物类型进行预处理，并发地震最终会引发海底滑坡。