Supershear shock front contribution to the tsunami from the 2018 M_w7.5 Palu, Indonesia earthquake

Hazardous tsunamis are known to be generated predominantly at subduction zones. However, the 2018 Mw 7.5 Palu (Indonesia) earthquake on a strike-slip fault generated a tsunami that devastated the city of Palu. The mechanism by which this tsunami originated from such an earthquake is being debated. Here we present near-field ground motion (GPS...

Two-receiver measurements of phase velocity: cross-validation of ambient-noise and earthquake-based observations

Phase velocities derived from ambient-noise cross-correlation are compared with phase velocities calculated from cross-correlations of waveform recordings of teleseismic earthquakes whose epicentres are approximately on the station–station great circle. The comparison is conducted both for Rayleigh and Love waves using over 1000 station pairs in...

Time-stepping stability of continuous and discontinuous finite-element methods for 3-D wave propagation

We analyse the time-stepping stability for the 3-D acoustic wave equation, discretized on tetrahedral meshes. Two types of methods are considered: mass-lumped continuous finite elements and the symmetric interior-penalty discontinuous Galerkin method. Combining the spatial discretization with the leap-frog time-stepping scheme, which is second...

A feasibility study of land CSEM reservoir monitoring in a complex 3-D model

Shape based Monte Carlo code for light transport in complex heterogeneous tissues

A Monte Carlo code for the calculation of light transport in heterogeneous scattering media is presented together with its validation. Triangle meshes are used to define the interfaces between different materials, in contrast with techniques based on individual volume elements. This approach allows to address realistic problems in a flexible way...

Finite-element model for three-dimensional optical scattering problems

We present a three-dimensional model based on the finite-element method for solving the time harmonic Maxwell equation in optics. It applies to isotropic or anisotropic dielectrics and metals and to many configurations such as an isolated scatterer in a multilayer, bi-gratings, and crystals. We discuss the application of the model to near-field...

A plane stress softening plasticity model for orthotropic materials

Viscoplasticity for instabilities due to strain softening and strain-rate softening

Some observations on element performance in isochoric and dilatant plastic flow

Stochastic approaches for damage evolution in standard and non-standard continua

Finite element procedure for modelling fibre metal laminates

Fundamental issues in finite element analyses of localization of deformation

A non-linear finite element approach for the analysis of mode-I free edge delamination in composites

The use of the Hoffman yield criterion in finite element analysis of anisotropic composites

Integration of plasticity equations for singular yield functions