As a first step in carrying out the tasks the existing software was checked and transferred into the new Fortran-90 standard. Then the programs were tuned for faster performance and extended to allow calculation of six instead of five layers to account for detailed knowledge of velocity depth profiles.
In the following, a preparational study was made on the influence of several layers, i.e. their elastic constants and thickness, on surface deformation. Doing so, special attention was paid to the effects of the physical properties of the source layer on amplification or diminishing displacement at the surface. Results were reported at the 1996 EGS and ESC General Assemblies.
Information was gathered on strong (historical) earthquakes on Iceland and its surroundings, especially from IMOR.DG.
Two models were prepared: (1) a model of the SISZ and the adjacent part of the eastern volcanic zone and (2) a scheme comprising the main ridge parts on Iceland and the North Atlantic Ridge to the north and to the south of the island, including both faults and the load due to Katla and Hekla volcanos.