كليدواژه :
Indirect Loss , Output-Input , Effect Ripple , Economic , direct loss
چكيده فارسي :
In this research, we develop a linear relationship between seismic time-history parameters and
earthquake losses to obtain a model that is able to estimate economic losses of lifeline systems including
transportation, communication, potable water and waste water, natural gas systems and electric power
networks.
We considered economic losses of lifeline systems as a dependent variable and seismic parameters as
independent variables. Stepwise multiple linear regressions were used to create a linear equation between the
monetary value of losses and the seismic parameters of Peak Ground Acceleration (PGA), Peak Ground
Velocity (PGV) and Peak Ground Displacement (PGD) at various earthquakes.
Usually earthquake losses are not limited to physical losses but possible contain very widespread
dimensions, example loss of output because of generate abeyance, reduction of consumption because of
diminish social activities, etc. Losses linked with effects would be very huge and vaster than those counted
just through physical damages.
The method is used in current research is Input-Output (I-O) effect analysis. I-O table is a compendium
accounting of all purchases and sales across components in a given zone. In this analysis, Iran is considered
as a region. Thus, we use Iran’s input-output table, the indirect losses due to damage of lifeline systems in
past earthquakes of Iran evaluated by the inter-industry relation.
