000018903 001__ 18903
000018903 005__ 20170118182246.0
000018903 04107 $$aeng
000018903 046__ $$k2017-01-09
000018903 100__ $$aPuelma, Andrés
000018903 24500 $$aTsunami Risk for Chile’s Coastal Areas

000018903 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018903 260__ $$b
000018903 506__ $$arestricted
000018903 520__ $$2eng$$aChile is affected by destructive earthquakes; of these earthquakes, those occurring offshore have the potential to generate destructive tsunamis. To assess the risk of tsunami damage generated by subduction seismic events, several analyses have been conducted on eleven major Chilean coastal cities. From the characterization of five mega-thrust events occurring due to the subduction of the Nazca plate below the South American plate, Okada’s rupture model is applied as the initial boundary condition to five regional numerical models representing massive water waves propagating towards the continent. The mega-thrust events were characterized to represent a code-level earthquake, but not the maximum historical earthquake (1960 Valdivia earthquake, Mw=9.5). Using the results of these five regional models as boundary conditions, eleven refined numerical models were used to compute the onshore water invasion and the velocity of impact on the infrastructure encountered. On both, regional and local models, the most accurate bathymetry of the ocean floor was used; similarly, the up-to-date coastline geometry, onshore topography, and infrastructure localization were included. The infrastructure was assumed to be reflective. The models were built and analyzed using state-of-the-art technology to represent the boundary conditions, water domains, seafloor bathymetry, and onshore topography and geometry, as accurately as needed. The models were successfully verified with data observed after the 2010 Maule earthquake (Mw=8.8). The results obtained indicated that most of the eleven cities studied were relatively safe from the destructive damage that these types of tsunamis generate, mostly due to the hilly geography of Chile’s coastal region. However, the areas, and infrastructure on the coastline such as ports, would be subjected great damage. The eleven coastal cities studied were: Arica, Iquique, Mejillones, Antofagasta, La Serena, Coquimbo, Quintero, Viña del Mar, Valparaíso, San Antonio, and Talcahuano.

000018903 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018903 653__ $$aTsunami water-wave modeling, Tsunami inundation; Chile tsunami risk; Viña del Mar and Valparaíso tsunami.

000018903 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018903 720__ $$aPuelma, Andrés$$iMedina, Francisco
000018903 8560_ $$ffischerc@itam.cas.cz
000018903 8564_ $$s6852104$$uhttps://invenio.itam.cas.cz/record/18903/files/2442.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2442.
000018903 962__ $$r16048
000018903 980__ $$aPAPER