subwavelength imaging using seismic scanning tunneling macroscope field data example
DESCRIPTION
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 Background Theory Kaust Field Experiment - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/1.jpg)
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
![Page 2: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/2.jpg)
Outline
• Motivation
• Background
• Theory
• Kaust Field Experiment
• Qademah Field Experiment
• Conclusions
![Page 3: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/3.jpg)
Outline
• Motivation
• Background
• Theory
• Kaust Field Experiment
• Qademah Field Experiment
• Conclusions
![Page 4: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/4.jpg)
0 km 7 km
0 km
3 km
Why is Resolution Important ?
?
KM image0 km 7 km
Least Squares KM image
![Page 5: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/5.jpg)
Outline
• Motivation
• Background
• Theory
• KAUST Field Experiment
• Qademah Field Experiment
• Conclusions
![Page 6: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/6.jpg)
Background
Depth
Δx
Z
• Rayleigh Resolution
• Abbe Resolution
Can we achieve ??? • 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.
![Page 7: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/7.jpg)
Outline
• Motivation
• Background
• Theory
• Kaust Field Experiment
• Qademah Field Experiment
• Conclusions
![Page 8: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/8.jpg)
Seismic Scanning Tunneling MacroscopeSources
Receivers
Scattererr
Post-stack migration image (Schuster et al. 2012):
𝑚 (𝑠′ ,𝑠0 )=𝛼 sin ¿¿
𝑠 ′
𝑠0
𝑔
![Page 9: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/9.jpg)
Seismic Scanning Tunneling Macroscope
r
𝑠 ′
𝑠0
𝑔
Post-stack migration image:
0.2 0.7`
0.2 0.7
𝑐
|𝑠−𝑠0|∨𝑠 ′ −𝑠0∨¿∫−𝐿
+𝐿 1¿𝑔−𝑠0
❑∨¿2 ¿¿
0.2 0.7S’
Near field resolution Far field resolution
![Page 10: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/10.jpg)
Outline
• Motivation
• Background
• Theory
• KAUST Field Experiment
• Qademah Field Experiment
• Conclusions
![Page 11: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/11.jpg)
Sources
Line 1
Line 5
Line 4
Line 3
Line 2
Layout of the Field Experiment
Scatterer near shot 12
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Layout of the Field Experiment
![Page 13: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/13.jpg)
Common Shot Gathers
a) CSGs before putting any scatterer b) CSGs after burying a scatterer
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Migration Images
R R
Without Scatterers With Scatterers
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Resolution at full bandwidth of the data
1.2 m
0.6 m
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Resolution at half bandwidth of the data
0.6 m
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Outline
• Motivation
• Background
• Theory
• KAUST Field Experiment
• Qademah Field Experiment
• Conclusions
![Page 18: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/18.jpg)
Qademah Field Experiment with no scatterer
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Qademah Field Experiment with one scatterer
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Qademah Field Experiment with two scatterers
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Migration Images
Trial Source Location
Act
ual S
ourc
e Lo
catio
n
R
15 m
𝝀𝟐
𝝀𝟖
R With scatterersWithout scatterers
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Migration Images
Trial Source Location
Act
ual S
ourc
e Lo
catio
n
R
𝝀𝟐𝝀𝟏𝟎
R With scatterersWithout scatterers
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Migration Image for the weaker scatterer
R
𝝀𝟐
𝝀𝟏𝟎
Trial Source Location
Act
ual S
ourc
e Lo
catio
n
R With scatterersWithout scatterers
![Page 24: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/24.jpg)
Outline
• Motivation
• Background
• Theory
• KAUST Field Experiment
• Qademah Field Experiment
• Conclusions
![Page 25: Subwavelength Imaging using Seismic Scanning Tunneling Macroscope Field Data Example](https://reader036.vdocuments.us/reader036/viewer/2022062410/56815fce550346895dcecdb9/html5/thumbnails/25.jpg)
Conclusions
• Scatterers can be imaged with subwavelength resolution with SSTM.
• Field data results show a super-resolution signature of .
• Direct arrivals, surface waves and ground roll need to removed during preprocessing.
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Acknowledgements
We would like to thank
• King Abdullah University of Science and Technology
• Society of Exploration Geophysicists
• Chamber of Geophysical Engineers of Turkey
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THANK YOU !!!