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Related Experiment Video

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Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population
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Data-driven retrieval of primary plane-wave responses.

Giovanni Angelo Meles1, Lele Zhang1, Jan Thorbecke1

  • 1Department of Geoscience and Engineering Delft University of Technology Stevinweg 1, 2628 CN Delft The Netherlands.

Geophysical Prospecting
|August 4, 2020
PubMed
Summary
This summary is machine-generated.

This study introduces a new method for creating clearer seismic images by synthesizing primary reflections using plane-wave data. This approach reduces artifacts caused by multiples, improving seismic imaging accuracy.

Keywords:
Multiple attenuationReverse‐time migrationSeismic imaging

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Area of Science:

  • Geophysics
  • Seismic Imaging
  • Exploration Geophysics

Background:

  • Seismic images from reverse time migration (RTM) are often degraded by artifacts from migrating multiples.
  • These multiples cause false positives and negatives, corrupting seismic data and hindering accurate subsurface interpretation.
  • Existing multiple prediction methods, typically using point source gathers, are computationally intensive for large-scale problems.

Purpose of the Study:

  • To develop a computationally efficient algorithm for synthesizing primary seismic reflections.
  • To enable multiple-free imaging using plane-wave reverse time migration (PW-RTM).
  • To adapt data-driven methods for handling plane-wave datasets, reducing computational load.

Main Methods:

  • Adapted a data-driven point source gather method using convolutions and cross-correlations.
  • Incorporated plane-wave concepts into the data-driven approach.
  • Developed an algorithm for fully data-driven synthesis of primary plane-wave reflections.

Main Results:

  • Successfully synthesized primary plane-wave responses from reflection data.
  • Demonstrated the capability of the algorithm to produce multiple-free images using PW-RTM.
  • Numerical tests confirmed the effectiveness with a limited number of plane-wave datasets.

Conclusions:

  • The proposed algorithm offers a computationally attractive solution for multiple-free seismic imaging.
  • It enables accurate primary reflection synthesis from plane-wave data, reducing artifacts.
  • The method shows significant potential for improving seismic data processing and interpretation in complex geological settings.