GEOLOGICAL HAZARD ASSESSMENTS:

A Geologically hazardous condition exists when the properties are threatened by geologic or hydrologic processes and the area which is subjected to hazardous conditions are shown on a series of hazard maps. In Addition to identifying and describing these hazards, we evaluate the potential dangers they pose to the proposed development or facility and provide the recommendations to mitigate these hazards. The geological hazard assessment indexes and their classification criterion are presented through the degree of geological activities in history and the development tendency in the future. Finally, several considerations concerning the concept of acceptable risk and risk management are presented.

 The seismic hazard is defined as the probabilistic measure of ground shaking associated to reappearance of earthquakes. It is possible to distinguish between statistical analyses (bivariate or multivariate) and deterministic methods that involve the analysis of specific sites or slopes based on geo-engineering models. The Analysis to the patterns of the geological hazard, development characteristics, forming conditions and influencing factors is given based on the data of geological survey. Population growth and dense population concentration, growing accumulation of assets in urban areas, the increase of infrastructural vulnerability, the over-exploitation of natural resources and the effects of climate change are causing a steadily swelling susceptibility to natural threats at local, regional and global level. This includes both geological hazards like earthquakes, landslides, volcanic eruptions, land subsidence or sinkholes and hydro-meteorological hazards such as hurricanes, floods, droughts and heat waves.