Frequency dispersion amplifies tsunamis caused by outer-rise normal faults.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
08 10 2021
08 10 2021
Historique:
received:
12
05
2021
accepted:
28
09
2021
entrez:
9
10
2021
pubmed:
10
10
2021
medline:
10
10
2021
Statut:
epublish
Résumé
Although tsunamis are dispersive water waves, hazard maps for earthquake-generated tsunamis neglect dispersive effects because the spatial dimensions of tsunamis are much greater than the water depth, and dispersive effects are generally small. Furthermore, calculations that include non-dispersive effects tend to predict higher tsunamis than ones that include dispersive effects. Although non-dispersive models may overestimate the tsunami height, this conservative approach is acceptable in disaster management, where the goal is to save lives and protect property. However, we demonstrate that offshore frequency dispersion amplifies tsunamis caused by outer-rise earthquakes, which displace the ocean bottom downward in a narrow area, generating a dispersive short-wavelength and pulling-dominant (water withdrawn) tsunami. We compared observational evidence and calculations of tsunami for a 1933 M
Identifiants
pubmed: 34625626
doi: 10.1038/s41598-021-99536-x
pii: 10.1038/s41598-021-99536-x
pmc: PMC8501110
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
20064Informations de copyright
© 2021. The Author(s).
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