The Influence of Geographical Resolution of Urban Exposure Data in an Earthquake Loss Model for Istanbul

摘要: Exposure data available to developers of earthquake loss models are often very crudely aggregated spatially, and in such cases considerable effort can be required refine the geographical resolution building stock inventory. The influence exposure for Sea Marmara region Turkey is explored using several different levels spatial aggregation estimate losses due a single scenario. results show that total damage over an urban area, expressed as mean ratio (MDR), rather insensitive if sufficiently large number ground-motion simulations used. However, variability MDR estimates does reduce becomes higher, reducing required, although there appears law diminishing returns going high resolution. This largely inherent irreducible ground motion, which suggests only needed, definition not justified.