Preprints
https://doi.org/10.5194/nhess-2024-41
https://doi.org/10.5194/nhess-2024-41
02 Apr 2024
 | 02 Apr 2024
Status: a revised version of this preprint was accepted for the journal NHESS and is expected to appear here in due course.

Modeling tsunami initial conditions due to rapid coseismic seafloor displacement: efficient numerical integration and a tool to build unit source databases

Alice Abbate, José M. González Vida, Manuel J. Castro Díaz, Fabrizio Romano, Hafize Başak Bayraktar, Andrey Babeyko, and Stefano Lorito

Abstract. The initial condition for the simulation of a seismically-induced tsunami for a rapid, assumed instantaneous, vertical seafloor displacement is given by the Kajiura low-pass filter integral. This work proposes a new efficient and accurate approach for its numerical evaluation, valid when the sea floor displacement is discretized as a set of rectangular contributions. We compare several truncated quadrature formulae, selecting the optimal one. We verify that we can satisfactorily approximate the initial sea level perturbation as a linear combination of those induced by the elementary sea floor displacements. The methodology is tested on the tsunamigenic Kuril earthquake doublet – a megathrust and an outer-rise – occurred in the Central Kuril Islands in late 2006 and early 2007. We also confirm the importance of the horizontal contribution to the tsunami generation and we consider a simple model of the inelastic deformation of the wedge, on a realistic bathymetry. The proposed approach results accurate and fast enough to be considered relevant for practical applications, and a tool is provided to create tsunami unit source databases for a given region of interest.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Alice Abbate, José M. González Vida, Manuel J. Castro Díaz, Fabrizio Romano, Hafize Başak Bayraktar, Andrey Babeyko, and Stefano Lorito

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2024-41', Anonymous Referee #1, 03 Apr 2024
  • RC2: 'Comment on nhess-2024-41', Anonymous Referee #2, 24 Apr 2024
  • RC3: 'Comment on nhess-2024-41', Anonymous Referee #3, 27 Apr 2024
  • RC4: 'Comment on nhess-2024-41', Kirill Sementsov, 01 May 2024

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on nhess-2024-41', Anonymous Referee #1, 03 Apr 2024
  • RC2: 'Comment on nhess-2024-41', Anonymous Referee #2, 24 Apr 2024
  • RC3: 'Comment on nhess-2024-41', Anonymous Referee #3, 27 Apr 2024
  • RC4: 'Comment on nhess-2024-41', Kirill Sementsov, 01 May 2024
Alice Abbate, José M. González Vida, Manuel J. Castro Díaz, Fabrizio Romano, Hafize Başak Bayraktar, Andrey Babeyko, and Stefano Lorito

Data sets

Laplacian Smoothing Tool (LST) and related data Alice Abbate https://doi.org/10.5281/zenodo.10786626

Model code and software

Laplacian Smoothing Tool (LST) and related data Alice Abbate https://doi.org/10.5281/zenodo.10786626

Alice Abbate, José M. González Vida, Manuel J. Castro Díaz, Fabrizio Romano, Hafize Başak Bayraktar, Andrey Babeyko, and Stefano Lorito

Viewed

Total article views: 576 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
451 86 39 576 44 22 19
  • HTML: 451
  • PDF: 86
  • XML: 39
  • Total: 576
  • Supplement: 44
  • BibTeX: 22
  • EndNote: 19
Views and downloads (calculated since 02 Apr 2024)
Cumulative views and downloads (calculated since 02 Apr 2024)

Viewed (geographical distribution)

Total article views: 544 (including HTML, PDF, and XML) Thereof 544 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 19 Jul 2024
Download
Short summary
Modeling the tsunami generation due to a rapid submarine earthquake is a complex problem. We propose and test, under a variety of realistic conditions in a subduction zone, an efficient solution to this problem, and a tool which can compute the generation of any potential tsunami in any ocean of the world. We will explore in the future solutions which would allow us to model the tsunami generation also by slower (time-dependent) seafloor displacement.
Altmetrics