Deterministic earthquake damage and loss assessment for the city of Bucharest, Romania |
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Authors: | Dominik Lang Sergio Molina-Palacios Conrad Lindholm Stefan Balan |
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Institution: | (1) NORSAR/ICG, Kjeller, Norway;(2) Faculty of Sciences, University of Alicante, S Vicente del Raspeig, Alicante, Spain;(3) National Institute for Earth Physics, Bucharest, Romania |
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Abstract: | On March 4, 1977, an earthquake with a moment magnitude M
w 7.4 at a hypocentral depth of 94 km hit the Vrancea region (Romania). In Bucharest alone, the earthquake caused severe damage
to 33,000 buildings while 1,424 people were killed. Under the umbrella of the SAFER project, the city of Bucharest, being
one of the larger European cities at risk, was chosen as a test bed for the estimation of damage and connected losses in case
of a future large magnitude earthquake in the Vrancea area. For the conduct of these purely deterministic damage and loss
computations, the open-source software SELENA is applied. In order to represent a large event in the Vrancea region, a set
of deterministic scenarios were defined by combining ranges of focal parameters, i.e., magnitude, focal depth, and epicentral
location. Ground motion values are computed by consideration of different ground motion prediction equations that are believed
to represent earthquake attenuation effects in the region. Variations in damage and loss estimates are investigated through
considering different sets of building vulnerability curves (provided by HAZUS-MH and various European authors) to characterize
the damaging behavior of prevalent building typologies in the city of Bucharest. |
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