Realistic Modeling of Seismic Input For Megacities and Large Urban Areas
IR@C-MMACS: CSIR-Centre for Mathematical Modelling and Computer Simulation, Bangalore
View Archive Info| Field | Value | |
| Title |
Realistic Modeling of Seismic Input For Megacities and Large Urban Areas
|
|
| Creator |
Parvez, Imtiyaz A
|
|
| Subject |
Computational Seismology
|
|
| Description |
The project addressed the problem of pre-disaster orientation: hazard prediction, risk assessment, and hazard mapping, in connection with seismic activity and man-induced vibrations. The definition of realistic seismic input has been obtained from the computation of a wide set of time histories and spectral information, corresponding to possible seismotectonic scenarios for different source and structural models. The innovative modelling technique, that constitutes the common tool to the entire project, takes into account source, propagation and local site effects. This is done using first principle of physics about wave generation and propagation in complex media, and does not require to resort to convolutive approaches, that have been proven to be quite unreliable, mainly when dealing with complex geological structures, the most interesting from the practical point of view. In fact, several techniques that have been proposed to empirically estimate the site effects using observation convolved with theoretically computed signals corresponding to simplified models, supply reliable information about the site response to non-interfering seismic phases. They are not adequate in most of the real cases, when the seismic sequel is formed by several interfering waves. The availability of realistic numerical simulation enables us to reliably estimate the amplification effects even in complex geological structures, exploiting the availabe geotechnical, lithological, geophysical parameters, topography of the medium, tectonic, historical, palaeoseismological data, and seismotectonic models. The realistic modeling of the ground motion is a very important base of knowledge for the preparation for groundshaking scenarios that represent a valid and economic tool for the seismic microzonation. This knowledge can be very fruitfully used by civil engineers in the design of new seismo-resistant constructions and in the reinforcement of the existing built environment, and, therefore, supply a particularly powerful tool for the prevention aspects of Civil Defense. We present a selection of the main results obtained for the cities of Algiers, Beijing, Bucharest, Cairo, Debrecen, Delhi, Naples, Rome, Russe, Santiago de Cuba, Sofia, Thessaloniki and Zagreb.
|
|
| Publisher |
The Abdus Salam International Centre for Theoretical Physics, Italy
|
|
| Date |
2002-06
|
|
| Type |
Monograph
NonPeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://cir.cmmacs.ernet.in/263/1/IC%202002%2044.pdf
Parvez, Imtiyaz A (2002) Realistic Modeling of Seismic Input For Megacities and Large Urban Areas. Project Report. The Abdus Salam International Centre for Theoretical Physics, Italy. (Unpublished) |
|
| Relation |
http://cir.cmmacs.ernet.in/263/
|
|