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Department of Mathematical Sciences

Seminar Archives

On this page you can find information about seminars in this and previous academic years, where available on the database.

Biomathematics Seminar: Forward scattering series in Acoustic and Elastic waves

Presented by Dr Joey Oliver, Durham University

1 March 2016 14:00 in CM105

Scattering of waves (acoustic, elastic or electromagnetic) in a layered medium (that is, media comprising homogeneous parallel layers) is a phenomenon which has widespread application in many areas of science. In geophysics, for example, the earth may be modelled as a layered medium, and the response to artificial seismic sources may be used in inversion problems. However, although the models can be easily formulated, solving them to predict responses is much more difficult. One possible approach is (forward or inverse) scattering series, a form of perturbation theory. In this talk we will give a brief outline of the multilayer scattering of elastic waves from a spherical source, with particular reference to its application in seismic exploration. We will then give an explanation of the scattering series, including a formal derivation and a physical explanation, and the example of acoustic scattering in a 3 layer medium. Should there be time, we will discuss adapting the method to elastic waves.

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