Numerical modelling and statistical emulation of landslide induced tsunamis: the Rockall Bank slide complex, NE Atlantic Ocean

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dc.contributor.advisor Dias, Frederic Salmanidou, Dimitra - Makrina 2017-06-14T11:38:10Z 2017-12-14T02:00:10Z 2017 the author en 2017
dc.description.abstract This thesis studies submarine sliding and tsunami generation at the Rockall Bank, NE Atlantic Ocean through numerical and statistical modelling. Two numerical codes are used to perform the simulations from the submarine sliding to tsunami generation, propagation and inundation. The landslide model is VolcFlow and the tsunami model is VOLNA. Some of the basic rheological regimes used to model submarine landslides are briefly discussed, with a comparison in the case of the Rockall Bank. The latest version of VOLNA is validated against an analytical solution. The brief geological history of the area under study is also given. The numerical simulations explore different scenarios of failure in the area, and assess their tsunamigenic potential and the impact of the tsunamis on the current topography of the Irish shoreline. The results of the simulations exhibit a great variability that derives from the parameters used as input in the landslide model. There is a need to quantify this uncertainty. To do so, a Bayesian calibration of the parameters is initially performed, which leads to the posterior distributions of the input parameters. A statistical emulator, which acts as a surrogate of the numerical process is then built. The emulator can lead to predictions of the process in excessively fast (when compared to the simulations) computational speeds. For the examined case, the emulator propagates the uncertainties in the distributions of the input parameters resulting from the calibration, to the outputs. As a result, the predictions of the maximum free surface elevation at specified locations are obtained. en
dc.language.iso en en
dc.publisher University College Dublin. School of Mathematics and Statistics   en
dc.subject Numerical modelling en
dc.subject Statistical emulation en
dc.subject Submarine landslides en
dc.subject Tsunami en
dc.subject Uncertainty quantification en
dc.title Numerical modelling and statistical emulation of landslide induced tsunamis: the Rockall Bank slide complex, NE Atlantic Ocean en
dc.type Doctoral Thesis en
dc.status Peer reviewed en
dc.type.qualificationname Ph.D. en
dc.neeo.contributor Salmanidou|Dimitra - Makrina|aut|
dc.description.admin Check date.issued and date.embargo: Flexible delayed release embargo added by author en 2017-06-14T10:32:57Z
dc.subject.marc650 #0|aTsunamis|zNorth Atlantic Ocean|xMathematical models. en
dc.subject.marc650 #0|aTsunamis|zRockall Bank|xMathematical models. en
dc.subject.marc650 #0|aLandslides|xMathematical models. en
dc.subject.marc650 #0|aSubmarine geology|xMathematical models. en

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