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International Conference on Tsunami Warning (ICTW) Bali, Indonesia, November 12-14, 2008
 

Summary: International Conference on Tsunami Warning (ICTW)
Bali, Indonesia, November 12-14, 2008
TSUNAMI WAVEGUIDING : PHENOMENON AND SIMULATION ABOVE
SYNTHETIC BATHYMETRY AND INDONESIAN COASTAL AREA
D. ADYTIA1,2,*
, A. SOPAHELUWAKAN1
and E. VAN GROESEN1,2
1
LabMath-Indonesia, Bandung, Indonesia
2
Department of Applied Mathematics, University of Twente, The Netherlands
*
corresponding author, email address : didit@labmath-indonesia.or.id
ABSTRACT: In this contribution we show that relatively narrow and shallow elongated areas in the propagation
direction of a tsunami wave can produce largely amplified waves by the phenomenon that we call near-coast
tsunami waveguiding. This phenomenon may contribute to an explanation that tsunami wave heights and coastal
effects show high variability along the coastline. To show this phenomenon, we use the recently derived linear
Variational Boussinesq Model (VBM) as a dispersive wave model. This model is implemented numerically by
using Finite Element Method (FEM) and used to simulate tsunami above a synthetic bathymetry and in an
Indonesian coastal area that will be shown to posses the tsunami waveguiding property.

  

Source: Al Hanbali, Ahmad - Department of Applied Mathematics, Universiteit Twente

 

Collections: Engineering