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A New Probabilistic Shift Away from Seismic Hazard Reality in Italy?

NEKRASOVA, ANASTASIA
•
PERESAN, ANTONELLA
•
Kossobokov, V. G.
•
PANZA, GIULIANO
2015
  • book part

Abstract
Objectivetestingisakeyissueintheprocessofrevisionandimprovement of seismic hazard assessments. Therefore we continue the rigorous comparative analysis of past and newly available hazard maps for the territory of Italy against the seismic activity observed in reality. The final Global Seismic Hazard Assessment Program (GSHAP) results and the most recent version of Seismic Hazard Harmo- nization in Europe (SHARE) project maps, along with the reference hazard maps for the Italian seismic code, all obtained by probabilistic seismic hazard assessment (PSHA), are cross-compared to the three ground shaking maps based on the duly physically and mathematically rooted neo-deterministic approach (NDSHA). These eight hazard maps for Italy are tested against the available data on ground shaking. The results of comparison between predicted macroseismic intensities and those reported for past earthquakes (in the time interval 1000–2014) show that models provide rather conservative estimates, which tend to over-estimate seismic hazard at the ground shaking levels below the MCS intensity IX. Only exception is repre- sented by the neo-deterministic maps associated with a fixed return period of 475 or 2475 years, which provide a better fit to observations, at the cost of model consistent 10 % or 2 % cases of exceedance respectively. In terms of the Kolmogorov-Smirnov
DOI
10.1007/978-3-319-14328-6_7
Archivio
http://hdl.handle.net/11368/2838319
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84927757401
http://www.springer.com/it/book/9783319143279
Diritti
closed access
license:digital rights management non definito
FVG url
https://arts.units.it/request-item?handle=11368/2838319
Soggetti
  • Seismic Hazard

  • Italy

Scopus© citazioni
5
Data di acquisizione
Jun 7, 2022
Vedi dettagli
google-scholar
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