Imperial College London
Portrait Picture

ProfessorMikeWarner

Faculty of Engineering, Department of Earth Science & Engineering

Professor
 
 
 
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Contact

 

+44 (0)20 7594 6535m.warner

 
 
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Assistant

 

Ms Daphne Salazar +44 (0)20 7594 7401

 
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Location

 

RSM 1.46CRoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Davy:2021:10.1029/2021gl094981,
author = {Davy, R and Frahm, L and Bell, R and Arai, R and Barker, D and Henrys, S and Bangs, N and Morgan, J and Warner, M},
doi = {10.1029/2021gl094981},
journal = {Geophysical Research Letters},
pages = {1--10},
title = {Generating highfidelity reflection images directly from fullwaveform inversion: Hikurangi Subduction Zone case study},
url = {http://dx.doi.org/10.1029/2021gl094981},
volume = {48},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Full-waveform inversion (FWI) can resolve subsurface physical properties to high resolutions, yet high-performance computing resources have only recently made it practical to invert for high frequencies. A benefit of high-frequency FWI is that recovered velocity models can be differentiated in space to produce high-quality depth images (FWI images) of a comparable resolution to conventional reflection images.Here, we demonstrate the generation of high-fidelity reflection images directly from the FWI process. We applied FWI up to 38 Hz to seismic data across the Hikurangi subduction margin. The resulting velocity models and FWI images reveal a complex faulting system, sediment deformation, and bottom-simulating reflectors within the shallow accretionary prism. Our FWI images agree with conventional reflection images and better resolve horizons around the Ppaku thrust fault. Thus, FWI imaging has the potential to replace conventional reflection imaging whilst also providing physical property models that assist geological interpretations.
AU  - Davy,R
AU  - Frahm,L
AU  - Bell,R
AU  - Arai,R
AU  - Barker,D
AU  - Henrys,S
AU  - Bangs,N
AU  - Morgan,J
AU  - Warner,M
DO  - 10.1029/2021gl094981
EP  - 10
PY  - 2021///
SN  - 0094-8276
SP  - 1
TI  - Generating highfidelity reflection images directly from fullwaveform inversion: Hikurangi Subduction Zone case study
T2  - Geophysical Research Letters
UR  - http://dx.doi.org/10.1029/2021gl094981
UR  - https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021GL094981
UR  - http://hdl.handle.net/10044/1/91974
VL  - 48
ER  -
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