Extracting 220 Hz information from 55 Hz field data by near-field superresolution imaging
KAUST DepartmentEarth Science and Engineering Program
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AbstractField 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.
CitationDutta G, AlTheyab A, Tarhini A, Hanafy S, Schuster GT (2016) Extracting 220 Hz information from 55 Hz field data by near-field superresolution imaging. Geophysical Journal International 206: 1194–1203. Available: http://dx.doi.org/10.1093/gji/ggw197.
SponsorsThe 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.
PublisherOxford University Press (OUP)