Extracting 220 Hz information from 55 Hz field data by near-field superresolution imaging

Gaurav Dutta; Abdullah AlTheyab; Ahmad Tarhini; Sherif Hanafy; Gerard T. Schuster

doi:10.1093/gji/ggw197

Extracting 220 Hz information from 55 Hz field data by near-field superresolution imaging

Gaurav Dutta, Abdullah AlTheyab, Ahmad Tarhini, Sherif Hanafy, Gerard T. Schuster

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Abstract

Field experiments are used to unequivocally demonstrate seismic superresolution imaging of subwavelength objects in the near-field region of the source. The field test is for a conventional hammer source striking a metal plate near subwavelength scatterers and the seismic data are recorded by vertical-component geophones in the far-field locations of the sources. Time-reversal mirrors (TRMs) are then used to refocus the scattered energy with subwavelength resolution to the position of the original source. A spatial resolution of lambda/10, where lambda is the dominant wavelength associated with the data, is seen in the field tests that exceeds the Abbe resolution limit of lambda/2.

Original language	English (US)
Pages (from-to)	1194-1203
Number of pages	10
Journal	Geophysical Journal International
Volume	206
Issue number	2
DOIs	https://doi.org/10.1093/gji/ggw197
State	Published - May 29 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST) in Thuwal, Saudi Arabia. The authors thank the Editor Dr. Duncan Agnew, Dr. Filippo Broggini and an anonymous reviewer for their comments and suggestions that have significantly improved the paper.

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10.1093/gji/ggw197

https://repository.kaust.edu.sa/bitstream/10754/622621/1/Geophys.%20J.%20Int.-2016-Dutta-1194-203.pdf

Cite this

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title = "Extracting 220 Hz information from 55 Hz field data by near-field superresolution imaging",

abstract = "Field experiments are used to unequivocally demonstrate seismic superresolution imaging of subwavelength objects in the near-field region of the source. The field test is for a conventional hammer source striking a metal plate near subwavelength scatterers and the seismic data are recorded by vertical-component geophones in the far-field locations of the sources. Time-reversal mirrors (TRMs) are then used to refocus the scattered energy with subwavelength resolution to the position of the original source. A spatial resolution of lambda/10, where lambda is the dominant wavelength associated with the data, is seen in the field tests that exceeds the Abbe resolution limit of lambda/2.",

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note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST) in Thuwal, Saudi Arabia. The authors thank the Editor Dr. Duncan Agnew, Dr. Filippo Broggini and an anonymous reviewer for their comments and suggestions that have significantly improved the paper.",

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AU - Hanafy, Sherif

AU - Schuster, Gerard T.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST) in Thuwal, Saudi Arabia. The authors thank the Editor Dr. Duncan Agnew, Dr. Filippo Broggini and an anonymous reviewer for their comments and suggestions that have significantly improved the paper.

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N2 - Field experiments are used to unequivocally demonstrate seismic superresolution imaging of subwavelength objects in the near-field region of the source. The field test is for a conventional hammer source striking a metal plate near subwavelength scatterers and the seismic data are recorded by vertical-component geophones in the far-field locations of the sources. Time-reversal mirrors (TRMs) are then used to refocus the scattered energy with subwavelength resolution to the position of the original source. A spatial resolution of lambda/10, where lambda is the dominant wavelength associated with the data, is seen in the field tests that exceeds the Abbe resolution limit of lambda/2.

AB - Field experiments are used to unequivocally demonstrate seismic superresolution imaging of subwavelength objects in the near-field region of the source. The field test is for a conventional hammer source striking a metal plate near subwavelength scatterers and the seismic data are recorded by vertical-component geophones in the far-field locations of the sources. Time-reversal mirrors (TRMs) are then used to refocus the scattered energy with subwavelength resolution to the position of the original source. A spatial resolution of lambda/10, where lambda is the dominant wavelength associated with the data, is seen in the field tests that exceeds the Abbe resolution limit of lambda/2.

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JF - Geophysical Journal International

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Extracting 220 Hz information from 55 Hz field data by near-field superresolution imaging

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