dc.creator | Jamin, Timothée | |
dc.creator | Gordillo, Leonardo | |
dc.creator | Ruiz Chavarría, Gerardo | |
dc.creator | Berhanu, Michael | |
dc.creator | Falcon, Eric | |
dc.date.accessioned | 2015-10-07T15:40:15Z | |
dc.date.available | 2015-10-07T15:40:15Z | |
dc.date.created | 2015-10-07T15:40:15Z | |
dc.date.issued | 2015 | |
dc.identifier | Proceeding of the Royal Society A-Mathematical Physical and Engineering Sciences Volumen: 471 Número: 2178 (2015) | |
dc.identifier | DOI: 10.1098/rspa.2015.0069 | |
dc.identifier | https://repositorio.uchile.cl/handle/2250/134207 | |
dc.description.abstract | We report laboratory experiments on surface waves generated in a uniform fluid layer whose bottom undergoes an upward motion. Simultaneous measurements of the free-surface deformation and the fluid velocity field are focused on the role of the bottom kinematics (i.e. its spatio-temporal features) in wave generation. We observe that the fluid layer transfers bottom motion to the free surface as a temporal high-pass filter coupled with a spatial low-pass filter. Both filter effects are often neglected in tsunami warning systems, particularly in real-time forecast. Our results display good agreement with a prevailing linear theory without any parameter fitting. Based on our experimental findings, we provide a simple theoretical approach for modelling the rapid kinematics limit that is applicable even for initially non-flat bottoms: this may be a key step for more realistic varying bathymetry in tsunami scenarios. | |
dc.language | en | |
dc.publisher | The Royal Society | |
dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | |
dc.rights | Atribución-NoComercial-SinDerivadas 3.0 Chile | |
dc.subject | Tsunami generation | |
dc.subject | Gravity surface waves | |
dc.subject | Linearized water wave problem | |
dc.title | Experiments on generation of surface waves by an underwater moving bottom | |
dc.type | Artículo de revista | |