Determination of Initial Sea Surface Displacement at Tsunami Source by a Part of Wave Profile

Kuzakov, Dmitry; Lavrentiev, Mikhail; Marchuk, Andrey

doi:10.1109/oceanskobe.2018.8559466

Cited by 2 publications

(4 citation statements)

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“…Based on the statement above, the following algorithm was proposed in [8] and tested in [1,9] for searching the coefficients of the linear combination allowing optimal approximation of the given function. It includes three steps.…”

Section: Algorithm Descriptionmentioning

confidence: 99%

“…The first column shows receiver's number (1-11). In the second column one can find the Composed Source number (1)(2)(3)(4)(5)(6). In the third and the fourth columns the length in seconds of NPWP and the full wave period are presented, respectively.…”

Section: Numerical Experimentsmentioning

confidence: 99%

“…This paper is an extension of work originally presented in OCEANS'18 MTS/IEEE Kobe/Techno-Oceans 2018, May 28-31, Kobe Japan [1]. Typical tsunami warning system includes the following parts: wave generation, propagation over the water area under study, and inundation of a dry land.…”

Section: Introductionmentioning

confidence: 99%

“…One of the problems is to choose the aforementioned amplification coefficients in an automated mode. The orthogonal decomposition approach to handle this was proposed in [8] and then tested in [1,9]. It happens that even a part of the first wave period is enough to determine the CSthe set of amplification coefficients.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Fast Determination of Tsunami Source Parameters

Lavrentiev¹,

Kuzakov²,

Marchuk³

2019

Adv. sci. technol. eng. syst. j.

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Source parameters of tsunami waves are an essential part of any modern tsunami warning system. Recalculation of a measured time series (wave profile obtained by a seabed-based pressure sensor) in terms of initial sea surface displacement at tsunami source is among the most (or) one of the promising approaches to be applied in a warning center. The "orthogonal decomposition", that was proposed and studied earlier by the authors, is numerically studied here. Realistic shape of sea surface displacement and digital bathymetry of the southern part of Japan are used. To study functionality of the proposed approach, wave profiles are obtained by the sensors of DONET-Dense Oceanfloor Network system for Earthquakes and Tsunamispressure gauge network of Japan. We stress on the quality of tsunami source parameters reconstruction as well as on time required. As observed, just a part of the first wave period is enough for robust determination of such source parameters as amplitude and total volume of water. Results of numerical tests are summarized in tables and then discussed.

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Section: Algorithm Descriptionmentioning

confidence: 99%