Seismic hazard in southern Calabria (Italy) based on the analysis of a synthetic earthquake catalog

被引:7
|
作者
Console, Rodolfo [1 ,2 ]
Chiappini, Massimo [2 ]
Minelli, Liliana [2 ]
Speranza, Fabio [2 ]
Carluccio, Roberto [2 ]
Greco, Michele [1 ,3 ]
机构
[1] Ctr Integrated Geomorphol Mediterranean Area, CGIAM, Potenza, Italy
[2] INGV, Rome, Italy
[3] Univ Basilicata, Potenza, Italy
关键词
Aeromagnetic survey; Southern Calabria fault system; Fault slip rate; Earthquake simulator; Synthetic earthquake catalog; Probabilistic seismic hazard; 1908 MESSINA STRAITS; SENSITIVITY-ANALYSIS; RELIABLE INSIGHTS; SOURCE MODELS; AEROMAGNETIC ANOMALIES; LEVELING DATA; FAULT; INVERSION; ARC; WASHINGTON;
D O I
10.1007/s11600-018-0181-7
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
The application of a newly developed physics-based earthquake simulator to the active faults inferred by aeromagnetism in southern Calabria has produced a synthetic catalog lasting 100 ky including more than 18,000 earthquakes of magnitude >= 4.0. This catalog exhibits temporal, spatial and magnitude features, which resemble those of the observed seismicity. As an example of the potential use of synthetic catalogs, a map of the peak ground acceleration (PGA) for a given exceedance probability on the territory under investigation has been produced by means of a simple attenuation law applied to all the events reported in the synthetic catalog. This map was compared with the existing hazard map that is presently used in the national seismic building regulations. The comparison supports a strong similarity of our results with the values given in the present Italian seismic building code, despite the latter being based on a different methodology. The same similarity cannot be recognized for the comparison of our present study with the results obtained from a previous study based on our same methodology but with a different geological model.
引用
收藏
页码:931 / 943
页数:13
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