Flood risk curves and uncertainty bounds |
| |
Authors: | Bruno Merz Annegret H Thieken |
| |
Institution: | Walter C. Dragani, Enrique E. D’Onofrio, Walter Grismeyer, Monica M. E. Fiore, Roberto A. Violante and Elizabeth I. Rovere |
| |
Abstract: | The Scotia Arc is one of two regions in the Atlantic Ocean with greater potential for tsunami generation from seismic and
volcanic sources. A numerical modeling study was undertaken to determine tsunami generation from postulated sources along
the Arc and tsunami wave amplification or attenuation along the Patagonian continental shelf. Sea level oscillation represented
by a simple sinusoidal wave function applied at the boundary of the numerical grid, which simulated the tsunami entering the
computational domain, was implemented as forcing. The validation of this model was carried out by comparing the maximum amplitudes
recorded and simulated at Santa Teresita and Mar del Plata (Buenos Aires province) after the occurrence of earthquake and
subsequent tsunami in Sumatra (December 2004). From numerical simulations it can be seen that the tsunami propagation is highly
affected by bathymetric refraction on the Patagonian continental shelf and the wave amplitude is significantly attenuated
on the inner continental shelf. Maximum amplifications were obtained around Malvinas (Falkland) Islands and Burdwood bank
because the wave propagates almost without refracting and the shoaling effect is highly significant there. |
| |
Keywords: | Tsunami Numerical simulation Oceanography Argentinean continental shelf Scotia Arc |
本文献已被 SpringerLink 等数据库收录! |