Imperial College London

Professor Gareth Collins

Faculty of EngineeringDepartment of Earth Science & Engineering

Professor of Planetary Science
 
 
 
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Contact

 

+44 (0)20 7594 1518g.collins Website

 
 
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Location

 

4.83Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Smith:2016:10.1016/j.ocemod.2016.02.007,
author = {Smith, R and Hill, J and Collins, GS and Piggott, MD and Kramer, S and Parkinson, S and Wilson, C},
doi = {10.1016/j.ocemod.2016.02.007},
journal = {Ocean Modelling},
pages = {125--140},
title = {Comparing approaches for numerical modelling of tsunami generation by deformable submarine slides},
url = {http://dx.doi.org/10.1016/j.ocemod.2016.02.007},
volume = {100},
year = {2016}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Tsunami generated by submarine slides are arguably an under-consideredrisk in comparison to earthquake-generated tsunami. Numerical simulationsof submarine slide-generated waves can be used to identify the important factorsin determining wave characteristics. Here we use Fluidity, an open sourcefinite element code, to simulate waves generated by deformable submarineslides. Fluidity uses flexible unstructured meshes combined with adaptivitywhich alters the mesh topology and resolution based on the simulationstate, focussing or reducing resolution, when and where it is required. Fluidityalso allows a number of different numerical approaches to be taken tosimulate submarine slide deformation, free-surface representation, and wavegeneration within the same numerical framework. In this work we use amulti-material approach, considering either two materials (slide and waterwith a free surface) or three materials (slide, water and air), as well as asediment model (sediment, water and free surface) approach. In all casesthe slide is treated as a viscous fluid. Our results are shown to be consistentwith laboratory experiments using a deformable submarine slide, anddemonstrate good agreement when compared with other numerical models.The three different approaches for simulating submarine slide dynamics andtsunami wave generation produce similar waveforms and slide deformationgeometries. However, each has its own merits depending on the application.Mesh adaptivity is shown to be able to reduce the computational cost withoutcompromising the accuracy of results.
AU - Smith,R
AU - Hill,J
AU - Collins,GS
AU - Piggott,MD
AU - Kramer,S
AU - Parkinson,S
AU - Wilson,C
DO - 10.1016/j.ocemod.2016.02.007
EP - 140
PY - 2016///
SN - 1463-5003
SP - 125
TI - Comparing approaches for numerical modelling of tsunami generation by deformable submarine slides
T2 - Ocean Modelling
UR - http://dx.doi.org/10.1016/j.ocemod.2016.02.007
UR - http://hdl.handle.net/10044/1/29535
VL - 100
ER -