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| Titel |
A hybrid model for mapping simplified seismic response via a GIS-metamodel approach |
| VerfasserIn |
G. Grelle, L. Bonito, P. Revellino, L. Guerriero, F. M. Guadagno |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 14, no. 7 ; Nr. 14, no. 7 (2014-07-14), S.1703-1718 |
| Datensatznummer |
250118538
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| Publikation (Nr.) |
 copernicus.org/nhess-14-1703-2014.pdf |
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| Zusammenfassung |
| In earthquake-prone areas, site seismic response due to
lithostratigraphic sequence plays a key role in seismic hazard assessment. A
hybrid model, consisting of GIS and metamodel (model of model) procedures,
was introduced aimed at estimating the 1-D spatial seismic site response in
accordance with spatial variability of sediment parameters. Inputs and
outputs are provided and processed by means of an appropriate GIS model,
named GIS Cubic Model (GCM). This consists of a block-layered parametric
structure aimed at resolving a predicted metamodel by means of pixel to
pixel vertical computing. The metamodel, opportunely calibrated, is able to
emulate the classic shape of the spectral acceleration response in relation
to the main physical parameters that characterize the spectrum itself.
Therefore, via the GCM structure and the metamodel, the hybrid model
provides maps of normalized acceleration response spectra. The hybrid model
was applied and tested on the built-up area of the San Giorgio del Sannio
village, located in a high-risk seismic zone of southern Italy. Efficiency
tests showed a good correspondence between the spectral values resulting
from the proposed approach and the 1-D physical computational models.
Supported by lithology and geophysical data and corresponding accurate
interpretation regarding modelling, the hybrid model can be an efficient
tool in assessing urban planning seismic hazard/risk. |
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