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Green's Function Retrieval and Marchenko Imaging in a Dissipative Acoustic Medium.
1Delft University of Technology, 2628 CN Delft, The Netherlands.
Physical Review Letters
|May 7, 2016
Summary
This study introduces new single-sided Marchenko equations for seismic imaging in dissipative media. The method enables enhanced Green's function construction for better subsurface imaging applications.
Area of Science:
- Geophysics
- Wave propagation
- Acoustic imaging
Background:
- Traditional Marchenko equations are used for Green's function construction and imaging in lossless media.
- Extending these methods to dissipative media is crucial for realistic subsurface imaging.
Purpose of the Study:
- To derive and validate single-sided Marchenko equations for acoustic imaging in dissipative heterogeneous media.
- To enable Green's function construction and subsurface imaging using data from dissipative media.
Main Methods:
- Derivation of two sets of single-sided Marchenko equations for dissipative and negative dissipation media.
- Utilizing double-sided scattering data from the dissipative medium as input.
- Computing surface reflection response in the corresponding negative dissipation medium.
Main Results:
- Successful derivation of single-sided Marchenko equations applicable to dissipative media.
- Demonstration of Green's function construction with virtual receivers in both dissipative and negative dissipation media.
- Validation of the imaging method through a one-dimensional example, showing image quality.
Conclusions:
- The derived single-sided Marchenko equations provide a basis for imaging within dissipative heterogeneous media.
- The method is applicable to scenarios where the material under test is accessible from two sides.
- This technique has potential for wide-ranging imaging applications in geophysics and material science.
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