engleski

Use of existing data in the City of Zagreb (Croatia, Europe) for the purpose of geo-planning

The City of Zagreb is capitol of Croatia placed in Europe, in the Pannonian Basin composed of Neogene and Quaternary sediments. At the territory of the City relief types changes in north-south direction encompassing 368.1 km2 of lowland area with slope <3 degrees. The total City area is 640 km2 and includes the urban area (Zagreb City) and 69 settlements with 792, 875 residents (18% of the total Croatian population). Although measures have been taken in the City of Zagreb to promote land use, development and construction practices that do not exacerbate the geologic hazard problem, the lack of recognition of geohazard prone terrain and incomplete understanding of the underground conditions still exists. This paper addresses engineering geological conditions at the area of the City as well as short overview of historical seismic-geotechnical and landslide hazard zonation from 60-thies till today. The historical performance of Zagreb geohazard zoning and system of geotechnical data archiving in assisting identification of the ground conditions and hazardous phenomena demonstrates that it is necessary to establish system of data collection and data zonation for geo-planning purposes. In the frame of this research, spatial interpretation of geological structure of City subsurface is transferred in GIS project to enable gathering of information about depths and thickness of lithostratigraphical formations which are important for planning of detailed ground investigations.

The City of Zagreb; geohazard zonation; subsurface mapping; 3D modeling

nije evidentirano