The structure of information modeling system, intended for research of climatic changes and dynamics of thermokarst processes at the permafrost territory was considered. It includes database and subsystem of modeling the thermokarst lake fields. Proposed geosimulation model is based on experimentally obtained regularities of changes of real thermokarst lake field properties at the permafrost territory of Western Siberia.
permafrost, thermokarst lakes, information modeling system