000019068 001__ 19068
000019068 005__ 20170118182257.0
000019068 04107 $$aeng
000019068 046__ $$k2017-01-09
000019068 100__ $$aLópez, Manuel Contreras
000019068 24500 $$aTide-Tsunami Interaction in a Highly Energetic Channel. a Case Study.

000019068 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019068 260__ $$b
000019068 506__ $$arestricted
000019068 520__ $$2eng$$aThe present study is intended to improve the physical understanding of tsunami propagation in semi-confined water bodies where the interaction with tides plays a significant role. A case study in Canal Chacao, a highly energetic channel located at the norther extreme of Chilean Patagonia, is studied. The fundamental question addressed here is to understand the interactions when tides and tsunamis are linearly superposed and when they interact nonlinearly, thus enhancing or reducing the surface elevation and associated currents. To answer this question, we implemented a series of models based on the twodimensional nonlinear shallow water equations to simulate the propagation of i) a tsunami with a constant tide corresponding to the mean sea level, ii) a tide and tsunami under the assumption that both can be linearly superimposed and iii) a tide and tsunami nonlinear interaction model. Results are analyzed in the narrowest section of Canal Chacao, where tidal currents may reach up to 6 m/s during spring tides. For this site, the maximum surface elevation during the simulation is larger in the nonlinear model, while the maximum current speeds (and derived quantities such as the drag forces or sediment transport potential) are obtained with the linear model. The nonlinear model is also better in computing the time of arrival of the first wave. These outcomes provide guidelines for the improvement of tsunami hazard assessments for the coastal communities located in fjords, channels and estuaries with similar characteristics.

000019068 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019068 653__ $$aTide, tsunami, nonlinear interaction, numerical modeling, Canal Chacao.

000019068 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019068 720__ $$aLópez, Manuel Contreras$$iWinckler, Patricio$$iLiu, Phillip$$iSepulveda, Ignacio$$iAron, Felipe
000019068 8560_ $$ffischerc@itam.cas.cz
000019068 8564_ $$s1349780$$uhttps://invenio.itam.cas.cz/record/19068/files/278.pdf$$yOriginal version of the author's contribution as presented on USB, paper 278.
000019068 962__ $$r16048
000019068 980__ $$aPAPER