A note on tsunami caused by submarine slides and slumps spreading in one dimension with nonuniform displacement amplitudes

M. D. Trifunac; A. Hayir; M. I. Todorovska

doi:10.1016/S0267-7261(02)00211-7

A note on tsunami caused by submarine slides and slumps spreading in one dimension with nonuniform displacement amplitudes

M. D. Trifunac^*, A. Hayir, M. I. Todorovska

^*Corresponding author for this work

Department of Civil Engineering

University of Southern California

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Tsunami created by spreading submarine slides and slumps with spatially variable final uplift are investigated in the near-field using a kinematic model. It is shown that for velocities of spreading comparable to and smaller than the long period tsunami velocity c _T = √gh (g is the acceleration due to gravity and h is the ocean depth), the models with spatially uniform final uplift of the accumulation and depletion zones provide good approximation for the tsunami amplitudes in the near-field. For spreading velocities 2-5 times greater than c_T, and for applications that use wavelengths of the order of the source dimensions, the spatial variability of the final uplift has to be considered in estimation of the high-frequency tsunami amplitudes in the near-field.

Original language	English
Pages (from-to)	41-52
Number of pages	12
Journal	Soil Dynamics and Earthquake Engineering
Volume	23
Issue number	3
DOIs	https://doi.org/10.1016/S0267-7261(02)00211-7
Publication status	Published - Apr 2003

Funding

During the course of this work, the second author was on leave from the Istanbul Technical University and visiting the University of Southern California. The financial support for his stay provided by TUBITAK-NATO is gratefully acknowledged.

Funders	Funder number
TUBITAK-NATO

Keywords

Gravity waves
Near-field
Nonuniform displacement amplitudes
Propagating source
Slides
Slumps
Tsunami
Water waves

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10.1016/S0267-7261(02)00211-7

Cite this

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AU - Todorovska, M. I.

PY - 2003/4

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AB - Tsunami created by spreading submarine slides and slumps with spatially variable final uplift are investigated in the near-field using a kinematic model. It is shown that for velocities of spreading comparable to and smaller than the long period tsunami velocity c T = √gh (g is the acceleration due to gravity and h is the ocean depth), the models with spatially uniform final uplift of the accumulation and depletion zones provide good approximation for the tsunami amplitudes in the near-field. For spreading velocities 2-5 times greater than cT, and for applications that use wavelengths of the order of the source dimensions, the spatial variability of the final uplift has to be considered in estimation of the high-frequency tsunami amplitudes in the near-field.

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A note on tsunami caused by submarine slides and slumps spreading in one dimension with nonuniform displacement amplitudes

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