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Lecturer Presents Paper on Application of Matlab in Seismic Interferometry


The first international conference on Tourism and Economic Development (TED’ 11) came off at the University Centre, Drobeta Turnu Severin, Romania, from October 27 to 29, 2011, alongside the International Conference on Environment, Economics, Energy, Device, System, Communications, Computer and Mathematics.

 

One of the resource persons at the conferences, organized by the World Scientific and Engineering Academy and Society (WSEAS) and the International Authority for the Advancement of Science and Applications of Technology (IAASAT), respectively, was Mr. Isaac Kuma Yeboah, a lecturer in the Engineering Department.

Mr. Yeboah’s participation in the two conferences followed the preview and acceptance of his paper and his subsequent invitation by Prof. Mirela Mazilu, president of the organizing committee.

In a paper titled ‘Application of matlab in seismic interferometry for seismic source location and interpolation of two dimensional ocean bottom seismic data,’ Mr. Yeboah analysed the processes by which interferometric techniques were used to extract multiple scatter information in ocean bottom seismic data to provide reliable results without prior knowledge of the velocity models.

The sparse ocean bottom seismic data were interferomatically correlated with the model-based Green’s functions for the sea floor model, which generated densely recorded ocean bottom seismic traces. Local matching filter was then applied to reduce the artifacts in the interpolated data.

To mitigate the artifacts in the interferometry correlation results, an anti-aliasing theory was developed to establish a fundamental criterion for numerical application of seismic interferometry to any seismic data. Mathematical Time Revisal Mirror models were further developed in MATLAB to determine the position of seismic source by comparing the phases of signals at the output terminals. Simulation was also run, using the data generated to plot a two-dimensional ocean bottom seismic profile (OBS).

The paper sought to show that seismic interferometry can be applied during exploration for hydrocarbon and during down hole drilling to provide reliable information about complex geology.