AZIMUTHAL DISTRIBUTION OF DOMINANT PERIODS OF TSUNAMI WAVES FORMED BY COSEISMIC BOTTOM DISPLACEMENTS
- Autores: Strogov T.A.1, Zarubina A.I.1, Nosov M.A.1
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Afiliações:
- Lomonosov Moscow State University
- Edição: Volume 525, Nº 1 (2025)
- Seção: OCEANOLOGY
- ##submission.dateSubmitted##: 24.07.2025
- ##submission.dateAccepted##: 28.07.2025
- ##submission.datePublished##: 20.08.2025
- URL: https://bakhtiniada.ru/2686-7397/article/view/303190
- ID: 303190
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Texto integral
Resumo
The stationary phase method is used to obtain a formula that allows one to calculate the frequency spectrum of tsunami waves for an ocean of constant depth based on the shape of the initial elevation of the water surface at the source. For a model source of Gaussian shape (elliptical in plan), the dependence of the dominant period of tsunami waves on the azimuth angle is analytically investigated. A method is proposed for mapping a real tsunami source located in an ocean of variable depth on the spherical surface of the Earth onto an equivalent source in a basin of fixed depth with a flat bottom. An example of calculating the period directivity diagram for the source of the Simushir tsunami of 13.01.2007 is given.
Sobre autores
Tikhon Strogov
Lomonosov Moscow State University
Email: strogovtixon@yandex.ru
Rússia, Department of Physics, Moscow State University, Moscow, 119991 Russia
Anastasiya Zarubina
Lomonosov Moscow State University
Email: zarubina.ai17@physics.msu.ru
Department of Physics, Moscow State University, Moscow, 119991 Russia
Mikhail Nosov
Lomonosov Moscow State University
Autor responsável pela correspondência
Email: nosovma@my.msu.ru
ORCID ID: 0000-0002-7730-9968
Código SPIN: 2040-0440
Scopus Author ID: 56236506700
Researcher ID: J-8540-2012
professor, head of chair, physics of sea and inland waters chair
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