Electromagnetic and hydrodynamic inverse problems in geophysical applications.

Date: 
Tuesday 18 October 2016 - 15:00 to 16:00
Location: 
NOC Southampton - Node Room (074/02) (Waterfront Campus).
Speaker: 
Dr Nick Polydories

Dr Nick Polydories; School of Engineering, Univ. Edinburgh

Electromagnetic and hydrodynamic inverse problems in geophysical applications.

Abstract:

In this talk I will present some computational results from three projects that are relevant to geophysical applications. As our research focuses on computational electromagnetics and inverse problems I will refer to a towed resistivity method for detecting small scale anomalies immersed in seawater using the concept of polarisation tensor potential. Next I will discuss some recent work on controlled source electromagnetic modelling and inversion for high-dimensional models using low-rank approximations of the sensitivity matrix obtained through randomised singular value decomposition. In the last leg of the talk, I will present some results from a hydrodynamic inverse problem which seeks to reconstruct, in real time, the oceanic currents impinging on seismic streamer cables during acquisition, from their shape and tension profile. 

 

Seminar category: 
G3 Seminars