A Web Application Prototype for the Multiscale Modelling of Seismic Input
A web application prototype is described, aimed at the generation of synthetic seismograms for user-defined earthquake models. The web application graphical user interface hides the complexity of the underlying computational engine, which is the outcome of the continuous evolution of sophisticated computer codes, some of which saw the light back in the middle 1980s. With the web application, even the non-experts can produce ground shaking scenarios at the local or regional scale in very short times, depending on the complexity of the adopted source and medium models, without the need of a deep knowledge of the physics of the earthquake phenomenon. Actually, it may even allow neophytes to get some basic education in the field of seismology and seismic engineering, due to the simplified intuitive experimental approach to the matter. One of the most powerful features made available to the users is indeed the capability of executing quick parametric tests in near real-time, to explore the relations between each model’s parameter and the resulting ground motion scenario. The synthetic seismograms generated through the web application can be used by civil engineers for the design of new seismo-resistant structures, or to analyse the performance of the existing ones under seismic load.
KeywordsGround Motion Seismic Hazard Epicentral Distance Synthetic Seismogram Earthquake Scenario
First and foremost, this web application couldn’t have seen the light without the underlying computational engine, based on the pioneering work by Prof. Panza. Giuliano’s energy, and his continuous push and encouragement have played a decisive role in shaping up and transforming the original codes into the friendly tools they now are.
The web application development saw the light within the project “Definition of seismic hazard scenarios and microzoning by means of Indo-European e-infrastructures” funded by Regione autonoma Friuli Venezia Giulia in the framework of the interventions aimed at promoting, at regional and local level, the cooperation activities for development and international partnership—“Progetti Quadro ai sensi della Legge regionale n. 19 del 30 ottobre 2000”. I’m truly grateful to Antonella for her impeccable project management.
The recent, strong evolution of the underlying computational engine would have never been possible without the dedicated work by the friends who made my life better here at the University: Fabio, Elisa, Andrea, Cristina and Davide, to name just those more deeply involved in the coding. And of course Enrico, for he knows what…
Stefano and Francesco have introduced me into the new universe of grid and cloud computing. I really enjoyed it, and I do hope our collaboration will continue and expand in the future.
Finally, a deep gratitude goes to my beloved family. I wish all the computational time spared through algorithm and code optimisation might be magically converted into time spent with them. Apparently I’m not too good in doing so, but don’t loose your faith, I’ll keep trying… :-)
- Burridge, R., & Knopoff, L. (1964). Body force equivalents for seismic dislocations. Bulletin of the Seismological Society of America, 54, 1875–1878.Google Scholar
- EN 1998-1. (2004). Eurocode 8: Design of structures for earthquake resistance—Part 1: General rules, seismic actions and rules for buildings [Authority: The European Union Per Regulation 305/2011, Directive 98/34/EC, Directive 2004/18/EC].Google Scholar
- Fäh, D., & Panza, G. F. (1994). Realistic modelling of observed seismic motion in complex sedimentary basins. Annali di Geofisica, 3, 1771–1797.Google Scholar
- Gorshkov, A. I., et al. (2002). Morphostructural zonation and preliminary recognition of seismogenic nodes around the adria margin in peninsular Italy and Sicily. Journal of Seismology and Earthquake Engineering, 4, 1–24.Google Scholar
- Gorshkov, A. I., et al. (2004). Identification of seismogenic nodes in the Alps and Dinarides. Bollettino della Società Geologica Italiana, 123, 3–18.Google Scholar
- Gusev, A. A. (1983). Descriptive statistical model of earthquake source radiation and its application to an estimation of short period strong motion. Geophysical Journal of the Royal Astronomical Society, 74, 787–800.Google Scholar
- Gusev. A. A., & Pavlov, V. (2006). Wideband simulation of earthquake ground motion by a spectrum-matching, multiple-pulse technique. In First European Conference on Earthquake Engineering and Seismology (a joint event of the 13th ECEE and 30th General Assembly of the ESC), Geneva, Switzerland, 3–8 Sept 2006. Paper Number: 408.Google Scholar
- La Mura, C. (2009). Wave propagation in three-dimensional anelastic media: The modal summation method in the WKBJ approximation, Ph.D. thesis, http://hdl.handle.net/10077/3141.
- Maruyama, T. (1963). On the force equivalents of dynamical elastic dislocations with reference to the earthquake mechanism. Bulletin of the Earthquake Research Institute, 41, 467–486.Google Scholar
- Mohanty, W. K., et al. (2013). Influence of epicentral distance on local seismic response in Kolkata City, India. Journal of Earth Science, 122, 321–338.Google Scholar
- Panza, G. F. (1985). Synthetic seismograms: The Rayleigh waves modal summation. Journal of Geophysics, 58, 125–145.Google Scholar
- Panza, G. F., et al. (2002). Realistic modeling of seismic input for megacities and large urban areas (the UNESCO/ IUGS/IGCP project 414). Episodes, 25, 160–184.Google Scholar
- Panza, et al. (2012). Seismic hazard scenarios as preventive tools for a disaster resilient society. Advances in Geophysics, 53, 94–165.Google Scholar
- Yanovskaya, T. B. (1989). Surface waves in media with weak lateral inhomogeneity. In V. I. Keilis-Borok (Ed.), Seismic surface waves in a laterally inhomogeneous earth (pp. 35–69). Dordrecht, The Netherlands: Kluwer Academic Publishers.Google Scholar