The European Fault-Source Model 2020 (EFSM20): geologic input data for the European Seismic Hazard Model 2020

Abstract. Earthquake hazard analyses rely on seismogenic source models. These are designed in various fashions, such as point sources or area sources, but the most effective is the three-dimensional representation of geological faults. We here refer to such models as fault sources. This study presents the European Fault-Source Model 2020 (EFSM20), which was one of the primary input datasets of the recently released European Seismic Hazard Model 2020. The EFSM20 compilation was entirely based on reusable data from existing active fault regional compilations that were first blended and harmonized and then augmented by a set of derived parameters. These additional parameters were devised to enable users to formulate earthquake rate forecasts based on a seismic-moment balancing approach. EFSM20 considers two main categories of seismogenic faults: crustal faults and subduction systems, which include the subduction interface and intraslab faults. The compiled dataset covers an area from the Mid-Atlantic Ridge to the Caucasus and from northern Africa to Iceland. It includes 1248 crustal faults spanning a total length of ∼95 100 km and four subduction systems, namely the Gibraltar, Calabrian, Hellenic, and Cyprus arcs, for a total length of ∼2120 km. The model focuses on an area encompassing a buffer of 300 km around all European countries (except for Overseas Countries and Territories) and a maximum of 300 km depth for the subducting slabs. All the parameters required to develop a seismic source model for earthquake hazard analysis were determined for crustal faults and subduction systems. A statistical distribution of relevant seismotectonic parameters, such as faulting mechanisms, slip rates, moment rates, and prospective maximum magnitudes, is presented and discussed to address unsettled points in view of future updates and improvements. The dataset, identified by the DOI https://doi.org/10.13127/efsm20 (Basili et al., 2022), is distributed as machine-readable files using open standards (Open Geospatial Consortium).

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Journal
Natural hazards and earth system sciences
Published
2024-11-19
DOI
https://doi.org/10.5194/nhess-24-3945-2024
Citations
8
Primary Topic
earthquake and tectonic studies
Type
article
Field-Weighted Citation Impact
4.81

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article

The European Fault-Source Model 2020 (EFSM20): geologic input data for the European Seismic Hazard Model 2020

Riccardo Caputo, Marta Neres, Athanassios Ganas, Carolina Canora et al.
8 citations
Natural hazards and earth system sciences
earthquake and tectonic studies
4.81
article

The European Fault-Source Model 2020 (EFSM20): geologic input data for the European Seismic Hazard Model 2020

Riccardo Caputo, Marta Neres, Athanassios Ganas, Carolina Canora, Polona Zupančič, Barbara Šket Motnikar, Laurentiu Danciu, J. Atanackov, Edward Marc Cushing, Mine Betül Demircioğlu Tümsa, Eulália Gràcia, Roberto Basili, Pierre Arroucau, Domenico Giardini, Céline Beauval, Héctor Perea, Francesco Emanuele Maesano, Roberto Vallone, Hervé Jomard, Varvara Tsironi, Mara Monica Tiberti, Michele M. C. Carafa, Nino Tsereteli, João C. Duarte, Petra Jamšek Rupnik, Karin Şeşetyan, Laura Gómez de la Peña, Kris Vanneste, S. Martínez‐Loriente, Julián García‐Mayordomo, Susana Vilanova, Stéphane Baize, Susana Custódio, Vanja Kastelic, Raquel Martín‐Banda, Shota Adamia
article en
8 citations

Abstract

Abstract. Earthquake hazard analyses rely on seismogenic source models. These are designed in various fashions, such as point sources or area sources, but the most effective is the three-dimensional representation of geological faults. We here refer to such models as fault sources. This study presents the European Fault-Source Model 2020 (EFSM20), which was one of the primary input datasets of the recently released European Seismic Hazard Model 2020. The EFSM20 compilation was entirely based on reusable data from existing active fault regional compilations that were first blended and harmonized and then augmented by a set of derived parameters. These additional parameters were devised to enable users to formulate earthquake rate forecasts based on a seismic-moment balancing approach. EFSM20 considers two main categories of seismogenic faults: crustal faults and subduction systems, which include the subduction interface and intraslab faults. The compiled dataset covers an area from the Mid-Atlantic Ridge to the Caucasus and from northern Africa to Iceland. It includes 1248 crustal faults spanning a total length of ∼95 100 km and four subduction systems, namely the Gibraltar, Calabrian, Hellenic, and Cyprus arcs, for a total length of ∼2120 km. The model focuses on an area encompassing a buffer of 300 km around all European countries (except for Overseas Countries and Territories) and a maximum of 300 km depth for the subducting slabs. All the parameters required to develop a seismic source model for earthquake hazard analysis were determined for crustal faults and subduction systems. A statistical distribution of relevant seismotectonic parameters, such as faulting mechanisms, slip rates, moment rates, and prospective maximum magnitudes, is presented and discussed to address unsettled points in view of future updates and improvements. The dataset, identified by the DOI https://doi.org/10.13127/efsm20 (Basili et al., 2022), is distributed as machine-readable files using open standards (Open Geospatial Consortium).

Natural hazards and earth system sciencesVol. 24(11)
Tbilisi State University (GE), Institut de Radioprotection et de Sûreté Nucléaire (FR), Centre National de la Recherche Scientifique (FR), Geological Survey of Slovenia (SI), University of Lisbon (PT), University of Ferrara (IT), Universidade Politécnica de Lisboa (PT), Portuguese Sea and Atmosphere Institute (PT), Royal Observatory of Belgium (BE), Instituto Geológico y Minero de España (ES), Kandilli Observatory and Earthquake Research Institute (TR), Slovenian Environment Agency (SI), Istituto Nazionale di Geofisica e Vulcanologia (IT), ETH Zurich (CH), Institut Català de Ciències del Clima (ES), Centre de Recherche et d’Enseignement de Géosciences de l’Environnement (FR), Institut des Sciences de la Terre (FR), National Observatory of Athens (GR), Électricité de France (France) (FR), Institut de Ciències del Mar (ES), Université Gustave Eiffel (FR), Institut de Recherche pour le Développement (FR), Boğaziçi University (TR), Universidad Autónoma de Madrid (ES), Université Savoie Mont Blanc (FR), Université Grenoble Alpes (FR)
European Commission, Horizon 2020
Openalex Percentile: Top 4%
earthquake and tectonic studies
4.81
DOIOpen Access PDFOpenAlex
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