Abstract
Abstract
Highlights
Tsunamis have a long history of devastation costing the lives of thousands of people, causing damage to property and posing a continuing threat to thousands of kilometres of shoreline
The DART buoys benefit from being at fixed locations while recording their time series of surface elevations
Abdolali et al (2017) investigated the surface gravity and acoustic–gravity wave fields produced by the megathrust Tohoku 2011 tsunamigenic event
Summary
Tsunamis have a long history of devastation costing the lives of thousands of people, causing damage to property and posing a continuing threat to thousands of kilometres of shoreline. Water compressibility and sea-bottom elasticity affect the phase speed of surface gravity waves and should be considered when accurate transoceanic tsunami modelling is sought (Abdolali & Kirby 2017; Abdolali et al 2019). Finite fault models have been investigated, providing a three dimensional theory of acoustic–gravity waves based on the classical method of the Green’s function (Hendin & Stiassnie 2013) Their utility in providing predictions for acoustic and surface wave behaviour in real time is limited. The derived explicit solution for the gravity mode (tsunami) is singular at the arrival time which results in overlooking the main peak of the tsunami To overcome this difficulty, we employ a multi-fault approach, where the original fault is split into stripes.
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