LANDSLIDES SURVEY IN THE NORTHEASTERN POLAND

Investigation of landslide processes in the northeastern Poland represents a part of geological work: Identifying and cataloguing natural geological hazards (especially landslides and other geodynamic phenomena) over Poland's territory commissioned by the Ministry of the Environment and financed by the National Fund for Environmental Protection and Wa- ter Management. As it was assumed, all aspects of geological hazards should be a subject of inventory. As the range of the ob- served phenomena was much bigger then expected, the investigations were concentrated on selected zones, strongly influenced by geological hazards. Except for landslides and other mass movements recorded in inventory cards, numerous objects of smaller hazards dimensions or scale were observed and listed for further documentation. Detailed geodetic survey and resistivity geotomography, and shallow geological drillings were made in some landslides creating a significant hazard to prepare the entrance data for digital models of landslides construction and its preparatory reco- gnition, preceding possible systematic monitoring of landslide processes. Zones of relatively intense landslide processes were distinguished taking into account similar genesis and similar geomorphological and geological conditions of landslides groups, i.e. Baltic coast with active landslides connected with marine abrasion, and the Lake District of the northern Poland with numerous moraine hills.