Performance of old and new mass-lumped triangular finite elements for wavefield modelling

Finite elements with mass lumping allow for explicit time stepping when modelling wave propagation and can be more efficient than finite differences in complex geological settings. In two dimensions on quadrilaterals, spectral elements are the obvious choice. Triangles offer more flexibility for meshing, but the construction of polynomial...

Temporal dispersion correction for wave-propagation modelling with a series approach

Temporal dispersion correction of second-order finite-difference time stepping for numerical wave propagation modelling exploits the fact that the discrete operator is exact but for the wrong frequencies. Mapping recorded traces to the correct frequencies removes the numerical error. Most of the implementations employ forward and inverse...

Modelling of Cohesive Sediment Transportation, Deposition and Resuspension in the Haringvliet Mouth.

In the Dutch coastal zone, where the marine environment is characterized by shallow depths and highly energetic hydrodynamic conditions, the cohesive sediments, or mud, play an important role in the local morphology. For instance, mud deposits and high concentrations of suspended particulate matter (SPM) occur frequently, especially during...

Transfer of ocean modelling capability to two scientists of the National Institute of Oceanography of India

Two scientists from the National Institute of Oceanography of India have been trained to use the storm surge model DUCHESS and the wave model DOLPHIN. The results are published separately in two reports. This is the first of them.