Abstract—New data on the seafloor topography in the waters adjacent to the White Sea Biological Station of Moscow State University (Kandalaksha Bay) obtained with a multibeam echosounder (MBE) have made it possible to study the seabed relief in detail and to clarify the structure of Quaternary sediments in this area, substantially increasing the detail of the continuous seismoacoustic profiling (CSP) data obtained earlier. In the western part of the studied water area de Geer moraines have been identified for the first time in a complex of glacial deposits. These were formed during the Late Pleistocene glacial retreat in an eastern direction toward the recent deepwater part of the White Sea. In the deepwater area, according to the MBE and CSP data, the genesis of studied sediments occurred due to intensive gravitational processes at the end of the Late Pleistocene–Holocene. These new data may be indicative of “dead” ice in the White Sea Depression.

摘要—用多波束回声测深仪（MBE）获得的莫斯科国立大学白海生物站（坎达拉克沙湾）附近海域海底地形的新数据，使详细研究海底地形和阐明海底地形的结构成为可能。该区域的第四纪沉积物，大大增加了之前获得的连续地震声学剖面 (CSP) 数据的细节。在研究水域的西部，第一次在冰川沉积物复合体中发现了德格尔冰碛。它们是在晚更新世冰川消退期间形成的，向东朝向最近的白海深水部分。在深水区，根据 MBE 和 CSP 数据，研究沉积物的成因是由于晚更新世-全新世末期强烈的引力过程而发生的。这些新数据可能表明白海洼地的“死”冰。