Acta Geophysica

, Volume 66, Issue 3, pp 283–291 | Cite as

Identifying the role of initial wave parameters on tsunami focusing

  • Baran Aydın
Research Article - Solid Earth Sciences


Unexpected local tsunami amplification, which is referred to as tsunami focusing, is attributed to two different mechanisms: bathymetric features of the ocean bottom such as underwater ridges and dipolar shape of the initial wave itself. In this study, we characterize the latter; that is, we explore how amplitude and location of the focusing point vary with certain geometric parameters of the initial wave such as its steepness and crest length. Our results reveal two important features of tsunami focusing: for mild waves maximum wave amplitude increases significantly with transverse length of wave crest, while location of the focusing point is almost invariant. For steep waves, on the other hand, increasing crest length dislocates focusing point significantly, while it causes a rather small increase in wave maximum.


Tsunami Focusing Dipolar waves Steepness Finite crest length 



The author acknowledges the financial support by Adana Science and Technology University Unit of Scientific Research Project Coordination through Project Number MUHDBF.IM.2015-8.

Compliance with ethical standards

Conflict of interest

The author states no conflict of interest.


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Copyright information

© Institute of Geophysics, Polish Academy of Sciences & Polish Academy of Sciences 2018

Authors and Affiliations

  1. 1.Adana Science and Technology UniversityAdanaTurkey

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