Luận Văn A parallel implementation on modern hardware for geo-electrical tomographical software

A parallel implementation on modern hardware for geo-electrical tomographical software
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[TD="width: 90%"]INTRODUCTION

Geophysical methods are based on studying the propagation of the different physical fields within the earth’s interior. One of the most widely used fields in geophysics is the electromagnetic field generated by natural or artificial (controlled) sources. Electromagnetic methods comprise one of the three principle technologies in applied geophysics (the other two being seismic methods and potential field methods). There are many geo-electromagnetic methods currently used in the world. Of these electromagnetic methods, resistivity tomography is the most widely used and it is of major interest in our work.
Resistivity tomography [17] or resistivity imaging is a method used in exploration geophysics [18] to measure underground physical properties in mineral, hydrocarbon, ground water or even archaeological exploration. It is closely related to the medical imaging technique called electrical impedance tomography (EIT), and mathematically is the same inverse problem. In contrast to medical EIT however, resistivity tomography is essentially a direct current method. This method is relatively new compared to other geophysical methods. Since the 1970s, extensive research has been done on the inversion theory for this method and it is still an active research field today. A detailed historical description can be seen in [27].



CONCLUSION

In the first phase of our project, we have developed the forward module for the resistivity tomography problem. Our implementation can run on multi-core CPUs and GPUs. Future versions may see new modules for resistivity inversion and other geophysical features. We are also working on making our code more efficient and more scalable over different kinds of architecture.

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