Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example G. Dutta, A. AlTheyab, S. Hanafy, G. Schuster King Abdullah University.

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Presentation transcript:

Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example G. Dutta, A. AlTheyab, S. Hanafy, G. Schuster King Abdullah University of Science and Technology, Saudi Arabia September 19, 2012

Outline Motivation Motivation Background Background Theory Theory Kaust Field Experiment Kaust Field Experiment Qademah Field Experiment Qademah Field Experiment Conclusions Conclusions

Outline Motivation Motivation Background Background Theory Theory Kaust Field Experiment Kaust Field Experiment Qademah Field Experiment Qademah Field Experiment Conclusions Conclusions

0 km 7 km 0 km 3 km Why is Resolution Important ? ? KM image 0 km 7 km Least Squares KM image

Outline Motivation Motivation Background Background Theory Theory KAUST Field Experiment KAUST Field Experiment Qademah Field Experiment Qademah Field Experiment Conclusions Conclusions

Background Depth ΔxΔx Z De Fornel (2001) and Jia et al. (2010) got super-resolution in optical imaging.with evanescent waves. De Fornel (2001) and Jia et al. (2010) got super-resolution in optical imaging.with evanescent waves. Schuster et al. (2012) used SSTM to get super-resolution with numerical experiments. Schuster et al. (2012) used SSTM to get super-resolution with numerical experiments.

Outline Motivation Motivation Background Background Theory Theory Kaust Field Experiment Kaust Field Experiment Qademah Field Experiment Qademah Field Experiment Conclusions Conclusions

Seismic Scanning Tunneling Macroscope Sources Receivers Scatterer r Post-stack migration image (Schuster et al. 2012):

Seismic Scanning Tunneling Macroscope r Post-stack migration image: ` S’ Near field resolution Far field resolution

Outline Motivation Motivation Background Background Theory Theory KAUST Field Experiment KAUST Field Experiment Qademah Field Experiment Qademah Field Experiment Conclusions Conclusions

Sources Line 1 Line 5 Line 4 Line 3 Line 2 Layout of the Field Experiment Scatterer near shot 12

Layout of the Field Experiment

Common Shot Gathers a) CSGs before putting any scatterer b) CSGs after burying a scatterer

Migration Images R R Without Scatterers With Scatterers

Resolution at full bandwidth of the data 1.2 m 0.6 m

Resolution at half bandwidth of the data 0.6 m

Outline Motivation Motivation Background Background Theory Theory KAUST Field Experiment KAUST Field Experiment Qademah Field Experiment Qademah Field Experiment Conclusions Conclusions

Qademah Field Experiment with no scatterer

Qademah Field Experiment with one scatterer

Qademah Field Experiment with two scatterers

Migration Images Trial Source Location Actual Source Location R 15 m R With scatterers Without scatterers

Migration Images Trial Source Location Actual Source Location R R With scatterers Without scatterers

Migration Image for the weaker scatterer R Trial Source Location Actual Source Location R With scatterers Without scatterers

Outline Motivation Motivation Background Background Theory Theory KAUST Field Experiment KAUST Field Experiment Qademah Field Experiment Qademah Field Experiment Conclusions Conclusions

Conclusions

Acknowledgements We would like to thank King Abdullah University of Science and Technology King Abdullah University of Science and Technology Society of Exploration Geophysicists Society of Exploration Geophysicists Chamber of Geophysical Engineers of Turkey Chamber of Geophysical Engineers of Turkey

THANK YOU !!!