By Carlos Sousa Oliveira, Antoni Roca, Xavier Goula
* Multidisciplinary process of hazard review and administration, which may supply extra effective earthquake mitigation. * Transfer of Geo-scientific and engineering wisdom to Civil defense and assurance brokers * ways and customary practices at once on the topic of the practise of earthquake emergency plans * Illustrated examples of exact purposes, together with websites * Case-studies and data on correct foreign tasks
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Additional info for Assessing and managing earthquake risk: geo-scientific and engineering knowledge for earthquake risk mitigation : developments, tools, techniques
3. EMPIRICAL METHOD (EXTREME VALUE DISTRIBUTIONS OF THE CATALOGUE EVENTS) The development of this method is directly based on statistical analysis of ground motion parameter values at a site corresponding to the sequence of earthquake events occurring through time. It requires the compilation of earthquakes with the time of occurrence, epicentral location and magnitude, and the use of an attenuation law. The 28 C. S. Oliveira and A. ) is then treated as an extreme value distribution (Gumbel distribution), by taking the largest value in a time period, normally the year.
Consequences of the earthquake are weighted for a global index value. Performance – The form a system responds to a given earthquake action in terms of measurement of the functions assigned to that system. Mitigation – Policies for reduction of consequences of earthquake activity within a lifetime period. Codes – The most practical and efficient form of designing a structure to withstand seismic action, by defining the minimum requirements (compulsory in some societies and recommendations in others) as far as structural performance.
The rapid damage assessment tool should help in determining which areas are more affected, the blocks of higher damage constraints in emergency road circuitry, buildings with higher concentration of victims, structures in danger of collapse due to some aftershock activity and needing immediate shoring, etc. ), industrial agents can start the inventory of impacts in their activities, etc. All them are in better position for defining policies for intervention. Modern technological developments can provide Civil Protection and other managing and security bodies with new forms of mitigation such as the seismic Early Warning systems (EWS).