Propagation of Seismic Waves Through Earth
Application ID: 90381
This tutorial model analyzes the propagation of seismic waves through Earth's internal structure. The model uses a 2D axisymmetric geometry to represent the material discontinuities and the variation of properties through the concentric layers of the earth. A simplified earthquake consisting of a tonal pulse is used to study the generation and propagation of the different pressure and shear waves across the inner structure of the earth.
The model uses the Elastic Waves, Time Explicit and Pressure Acoustics, Time Explicit interfaces to represent the solid and fluid parts of the earth. Sudden property discontinuities are handled through the use of the Material Discontinuity feature, while slow variation of properties are included within the material properties of each layer. The model demonstrates the scalability of time explicit interfaces and their applicability to capture large and very large acoustic models (containing many wavelengths).
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.