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Urban shakemap methodology for Bucharest
Author(s) -
Bartlakowski Julia,
Wenzel Friedemann,
Radulian Mircea,
Ritter Joachim R. R.,
Wirth Wolfgang
Publication year - 2006
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2006gl026283
Subject(s) - ground motion , strong ground motion , seismology , geology , measure (data warehouse) , motion (physics) , geodesy , physics , computer science , database , classical mechanics
We develop a methodology for a shakemap for the Romanian capital Bucharest that can be rapidly computed and delivered to the public, once real‐time data access is available to a sufficient extent. The methodology, with which the Californian shakemaps are generated, cannot be transferred to Bucharest, due to a missing understanding of the relationship between the geological near‐surface structure and the ground motion amplification. However, a systematic incorporation of previous seismological observations using Fourier Amplitude Spectra of weak and strong ground motion and a recent urban broadband experiment in Bucharest allows us to interpolate computed seismic intensities from 11 sites, where accelerometers measure the actual motion of a specific earthquake to 31 additional locations in the city, so that a reasonably reliable distribution of ground motion in the city can be determined. We demonstrate this methodology using the M W = 6.0 intermediate‐depth earthquake of October 27, 2004.