FORMATION OF THE "PALEOLADOGA" DATABASE FOR GIS PALEOLIMNOLOGICAL RECONSTRUCTIONS
The history of Lake Ladoga is described by many geological, paleogeographic and paleolimnological studies. In spite of more than a century of detailed paleogeographic studies of the Baltic region, a lot of questions in the field of geo-ecology, geology and paleogeography are still open, especially those of the intensity and dynamics of Ladoga transgression, the time of the Neva River formation and the direction of flow from Ladoga before this process. In order to trace the stages of the Lake Ladoga development, systematization, statistical analysis and visualization of information about its development in the post-glacial period were conducted based on the published data on the Holocene history of the lake, structures and composition of deposits, and archaeological data. These materials enabled us to create the «PALEOLADOGA» palaeolimnological database. It was made in the MS Excel format, where each object and its characteristics are stored as a string of the table. The database is integrated into geographic information systems (GIS) for the graphical representation, processing and analysis of information on research projects, and for the creation of cartographic products. The database may be useful in paleolimnological and paleogeographic studies of Lake Ladoga, and in compiling study guides for teaching undergraduate, graduate and postgraduate students who major in geography and geology.