### Monday, June 1

## IP2

Inverse Problems for a Perturbed Half-Space

1:30 PM-2:15 PM

*Chair: John Berger, Colorado School of Mines*

*Room 246*

The speaker will discuss inverse problems for acoustic scattering in the half-space geometry. The upper half- space is assumed known and is accessible for making measurements. Various measurement configurations will be discussed. The medium in the lower half-space is assumed known outside a bounded region. The speaker will present results that include the uniqueness issue as well as approaches to the reconstruction problem.

**Margaret Cheney**

*Department of Mathematical Sciences, Rensselaer Polytechnic Institute*

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*MMD, 12/22/97*