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Neo-Deterministic and Probabilistic Seismic Hazard Assessments: a Comparison over the Italian Territory

机译:新确定性和概率地震危险性评估:意大利地区的比较

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摘要

Estimates of seismic hazard obtained using the neo-deterministic approach (NDSHA) and the probabilistic approach (PSHA) are compared for the Italian territory. The NDSHA provides values larger than those given by the PSHA in areas where large earthquakes are observed and in areas identified as prone to large earthquakes, but lower values in low-seismicity areas. These differences suggest the adoption of the flexible, robust and physically sound NDSHA approach to overcome the proven shortcomings of PSHA, thus allowing for a reliable seismic hazard estimation, especially for those areas characterized by a prolonged quiescence, i.e. in tectonically active sites where events of only moderate size have occurred in historical times.
机译:比较了在意大利领土上使用新确定性方法(NDSHA)和概率方法(PSHA)获得的地震危害的估计值。在观察到大地震的地区和容易发生大地震的地区,NDSHA提供的值比PSHA给出的值大,而在低地震地区,NDSHA的值却低。这些差异表明,采用了灵活,健壮和物理上合理的NDSHA方法来克服PSHA的已证明的缺点,从而可以进行可靠的地震危险估计,尤其是对于那些具有较长静态的区域,即在构造活动频繁的地区。在历史时期仅发生过中等规模的事件。

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