Slip localization on multiple fault splays accommodating distributed deformation across normal fault complexities
Rattachement africain : it. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Deformation across structural complexities such as along-strike fault bends may be accommodated by distributed faulting, with multiple fault splays working to transfer the deformation between two principal fault segments. In these contexts, an unsolved question is whether fault activity is equally distributed through time, with multiple fault splays recording the same earthquakes, or it is instead localized in time and space across the distributed faults, with earthquakes being clustered on specific fault splays. To answer this question, we studied the distributed deformation across a structural complexity of the Mt. Marine fault (Central Apennines, Italy), where multiple fault splays accommodate the deformation throughout the change in strike of the fault. Our multidisciplinary (remote sensing analysis, geomorphological-geological mapping, geophysical and paleoseismological surveys) study identified five principal synthetic and antithetic fault splays arranged over an across-strike distance of 500 m, all of which showing evidence of multiple surface-rupturing events during the Late Pleistocene-Holocene. The fault splays exhibit different and variable activity rates, suggesting that fault activity is localized on specific fault splays through space and time. Nonetheless, our results suggest that multiple fault splays can rupture simultaneously during large earthquakes. Our findings have strong implications on fault-based seismic hazard assessments, as they imply that data collected on one splay may not be representative of the behaviour of the entire fault. This can potentially bias seismic hazard calculations.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Slip localization on multiple fault splays accommodating distributed deformation across normal fault complexities
- Date Crossref
- 01/12/2023
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University of Naples Federico II pays non établi dans la noticeUniversité ou école supérieure
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University of Chieti-Pescara pays non établi dans la noticeUniversité ou école supérieure
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Istituto Superiore per la Protezione e la Ricerca Ambientale pays non établi dans la noticeOrganisme public
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Istituto Nazionale di Geofisica e Vulcanologia pays non établi dans la noticeStructure de recherche
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University “Federico II” of Naples dell'Ambiente e delle Risorse pays non établi dans la noticeUniversité ou école supérieure
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University "Federico II" of Naples dell'Ambiente e delle Risorse pays non établi dans la noticeUniversité ou école supérieure
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University “G. D'Annunzio” of Chieti-Pescara Dipartimento di Ingegneria e Geologia pays non établi dans la noticeUniversité ou école supérieure
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University "G. D'Annunzio" of Chieti-Pescara Dipartimento di Ingegneria e Geologia pays non établi dans la noticeUniversité ou école supérieure
University of Naples Federico II, University of Chieti-Pescara et Istituto Superiore per la Protezione e la Ricerca Ambientale, avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.