Seismic roulette: Hazards and risks

Panza, G. F.

doi:10.1111/ter.12617

Cited by 7 publications

(1 citation statement)

References 203 publications

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“…Accordingly, to increase the number of stations in the region with potentially higher seismic hazard will be a significant option. For such a realistic demand, TD‐NDSHA might be a good candidate for a ‘standard tool', indeed TD‐NDSHA might be wrong, as all models, but it could be really useful (Kossobokov & Panza, 2022) for the EEWS purpose considered here.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Earthquake Early Warning System (EEWS) empowered by Time‐Dependent Neo‐Deterministic Seismic Hazard Assessment (TD‐NDSHA)

Zhang

Romanelli

et al. 2023

Terra Nova

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In the network‐based on‐site earthquake early warning system (EEWS), the ‘blind zone’, namely the zone where the issued warning arrives later than the destructive S and surface waves, is one of the challenges affecting its effectiveness. The ‘blind zone’ is determined by the interstation distance, or equivalently the density of seismic stations, of the network. In this paper, we suggest a practical approach according to which, when in a region a temporary increase of seismic hazard is declared, additional stations are deployed in such a way that the blind zone is temporarily reduced. In the procedure, the time‐dependent neo‐deterministic seismic hazard assessment (TD‐NDSHA) plays a vital role in the identification of the regions potentially exposed to high macroseismic intensities. As a showcase example, we consider the scenario of year 2014 at the Sichuan‐Yunnan border of southwest China. The TD‐NDSHA is based on the standard NDSHA procedure at regional scale (bedrock conditions), with the ‘controlling earthquakes’ defined on the basis of the Annual Consultation. We show that the ‘blind zone’ can be reduced in the identified areas of interest (e.g., MMI ≥ VI), by deploying a limited number of additional seismic stations. In the case where false alarms can be tolerated, significant reduction of the ‘blind zone’ can be implemented by moving from a network‐based EEWS to a single‐sensor‐based EEWS and skipping the process of location and magnitude‐determination/prediction procedures.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Earthquake Early Warning System (EEWS) empowered by Time‐Dependent Neo‐Deterministic Seismic Hazard Assessment (TD‐NDSHA)

Zhang

Romanelli

et al. 2023

Terra Nova

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Finite Rupture Attributes Associated with the Great-Earthquake-Prone Areas (GEPAs) of Continental Earthquakes

Zhang

Romanelli

et al. 2022

Journal of the Geological Society of India

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In the neo-deterministic seismic hazard assessment (NDSHA) evaluation, great-earthquake-prone areas (GEPAs) play an important role in defining the ‘controlling earthquakes’ or ‘scenario earthquakes’. When considering great earthquakes, their finite rupture attributes, which contribute to determine the strong ground motions and intensities, have to be taken into account. For continental earthquakes in China, the great earthquakes are located mainly within the boundary zones of the ‘tectonic blocks’. The ‘tectonic block’ model indicates the focal mechanisms and some finite rupture attributes of the great earthquakes within the boundary zones. Accordingly, in the NDSHA for China, it is both necessary and feasible for the GEPAs to consider the finite rupture attributes of great earthquakes. The Sichuan-Yunnan border in southwest China has been taken as an example to naturally develop the originally used circular shape of GEPAs into one with more degrees-of-freedom, better reflecting the possible rupture processes of the considered earthquakes.

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Deterministic tsunamigenic earthquake hazard assessment for the northern coast of Egypt based on multi-scenario approach

Hassan

Peresan²,

Gabry³

et al. 2023

Med. Geosc. Rev.

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Seismic roulette: Hazards and risks

Cited by 7 publications

References 203 publications

Earthquake Early Warning System (EEWS) empowered by Time‐Dependent Neo‐Deterministic Seismic Hazard Assessment (TD‐NDSHA)

Earthquake Early Warning System (EEWS) empowered by Time‐Dependent Neo‐Deterministic Seismic Hazard Assessment (TD‐NDSHA)

Finite Rupture Attributes Associated with the Great-Earthquake-Prone Areas (GEPAs) of Continental Earthquakes

Deterministic tsunamigenic earthquake hazard assessment for the northern coast of Egypt based on multi-scenario approach

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