Seismic hazard is the threat of possible major earthquake, which results in severe shaking.
Seismic hazard assessment is a maximum magnitude of possible shaking caused by earthquake occurred in the area. Assessment results in seismic zonation map compilation, which reflects territorial distribution of seismic hazard.
Subject to area seismic zonation detailing the general and specific seismic zonation and seismic microzonation are being outlined.
General seismic zonation is performed for vast territory, for example, territory of state.
Detailed seismic zonation is performed for specific territories of provinces and districts.
Seismic Risk is a human, property and other losses caused by the earthquake.
Seismic Risk is stipulated by human activity and depends on many factors such as seismic resistance of buildings and structures and population density. Level of risk could vary subject to meteorological, engineering and geological, societal and economic, etc. conditions.
Seismic Risk is classified into primary risk and secondary risk.
Primary risk is connected with human and property losses related directly to earthquake.
Secondary risk reflects losses caused by the primary risk, for example, environment contamination, pandemics, deterioration of population psychological societal condition, failure of state life-lines, secondary economic losses etc.
Seismic risk assessment could be done for the whole territory of state as well as for different settlements and objects.