What is it about?
In optics, diffraction phenomena play a key role in obtaining structural images of objects at the highest possible resolution. While it is appreciated that diffraction exists in geophysical applications, its extraction and targeted utilization is often compromised by typically low amplitudes and strong interference with the more dominant reflected wavefield. I present a simple methodology that confronts both these challenges through optically motivated coherence measurements.
Featured Image
Why is it important?
I show that without a priori velocity information, an often surprisingly rich diffracted wavefield can be extracted in a fully amplitude and phase preserving manner, thereby making it accessible to dedicated processing that can bring the high-resolution and high-illumination potential of these weak signals to maximal use.
Perspectives
My hope is that this article will help facilitate the development and improvement of dedicated diffraction processing, as it is my impression that its imaging potential is still only barely explored.
Dr Benjamin Schwarz
Fraunhofer Institute for Wind Energy Systems IWES
Read the Original
This page is a summary of: Coherent wavefield subtraction for diffraction separation, Geophysics, May 2019, Society of Exploration Geophysicists,
DOI: 10.1190/geo2018-0368.1.
You can read the full text:
Contributors
The following have contributed to this page
