Full-wavefield focusing in Seismic Imaging Concepts, Applications, and Examples
The 2018 Europe Honorary Lecture of Society of Exploration Geophysicists given by Prof. Vasconcelos (Utrecht University) will be held at Politecnico on Friday 9 at 10:00.
ABSTRACT
Over the years, new seismic imaging and velocity model estimation methods often have relied on the concepts of wavefield focusing. In this lecture, we will review the physics and the formalism of focusing in its most general forms, by means of reciprocity relations and language of seismic interferometry. With several examples, these exercises will allow us to also discuss the role of primary and multiple reflections in imaging and set a context for current imaging practices. In the second part of the lecture we will cover the recently introduced method of Marchenko redatuming in the context of depth imaging, building on the focusing framework from the first part of the lecture. We will cover the latest developments and examples of this approach (with synthetic and field data) while also pointing out its current shortcomings and opportunities for further advances.
Participation is free. Notification of attendance can be sent to valentina.socco@polito.it
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