Features of the Geomorphologic Structure of the Petrozavodsk Bay of Lake Onega According to Hydroacoustic and Seismoacoustic Observations

In this paper, features of the bottom relief of the large freshwater Lake Onega have been studied. The bottom survey was carried out using geological and geophysical methods in the waters of the Petrozavodsk Bay. As a result of processing and interpretation of the obtained field materials, it has been possible to carry out geomorphological analysis and identify characteristic types of relief. The bottom relief of the Petrozavodsk bay of Lake Onega has been found to have a heterogeneous character and to contain the following main categories: denudation-structural, accumulative-denudation glacial and fluvioglacial, and lake-nepheloid accumulative. Their genesis reflects the successive change of glacial landscapes.