This is an old revision of the document!

Spring 2020 GP280 - 3D Seismic Imaging

Course Facts

Lectures: MWF 1:30-2:20 PM, via Zoom
Instructor: Biondo Biondi
Teaching Assistant: Rahul Sarkar
TA Office Hours: T-Th: 4:00 pm - 6:00 pm (via Zoom). Send email beforehand to
3 units with labs, 2 units without; Grade only S/NC.
5 computer-based homework assignments
Schedule: schedule.pdf
On the right: Stack (after migration) of a 3-D data volume acquired over a salt body.


Bulletin description

Principles of imaging complex structures in the Earth subsurface by use of 3-D reflection seismology. The emphasis is on processing methodologies and algorithms, with examples of applications to field data. Topics include: acquisition geometries of land and marine 3-D seismic surveys, time vs. depth imaging, prestack Kirchhoff migration, dip moveout, zero-offset and prestack downward continuation, full separation and splitting, migration velocity analysis, velocity model building, imaging irregularly sampled and aliased data. Computational labs involve some programming.


Go to GP280 labs page

You will be given 5 hands-on homework assignments throughout the quarter. Although you are not expected to be an expert programmer, most of the labs require modification of Fortran90 code. If you run into trouble, refer to this list of Fortran90 tutorial.

Date Topic Notes
4/6 Introduction
4/8 3D Geometries (Chapter1)
4/10 Sep3D software (Appendix A)
4/13 Kirchhoff prestack migration (Chapter 2)
4/15 Kirchhoff prestack migration (isotropy vs anisotropy) (Chapter 2 + Notes)
4/17 NMO+DMO+AMO and prestack partial migration (Chapter 3)
4/20 Wavefield-continuation migration (Chapter 4)
4/22 Common image gathers in offsets and angles (Chapter 6)
4/24 Common image gathers in offsets and angles (Chapter 6)
4/27 Numerical methods for wavefield-continuation – two-way wave equation (Notes)
4/29 Numerical methods for wavefield continuation - one way wave equation (Chapter 5)
5/1 Definition of waveform inversion – migration as adjoint of linearized modeling (Notes)
5/4 Linearized waveform inversion – phase encoding in migration and inversion (Notes)
5/6 Imaging and aliasing (Chapter 8)
5/8 Imaging and irregular geometries (Chapter 9)
5/11 Imaging and irregular illumination + linearized Inversion (Chapter 9 + Notes)
5/13 Stacking velocity, Dix inversion, and traveltime tomography (Chapter 10)
5/15 Inversion of stacking velocities (Chapter 10) and time migration velocity analysis (Chapter 11)
5/18 Vertical and tomographic velocity updating (Chapter 11)
5/20 Tomographic velocity updating (Chapter 11)
5/22 Tomographic velocity updating (Chapter 11)
5/25 Memorial Day, No class
5/27 Full waveform inversion (FWI) (Notes)
5/29 Full waveform inversion (FWI) (Notes)
6/1 Migration velocity analysis by wavefield-continuation (Notes)
6/3 Migration velocity analysis by wavefield-continuation (Notes)
6/5 Tomographic Full waveform inversion (TFWI) (Notes)
6/8 Full waveform inversion with Model Extension (FWIME) (Notes)
6/10 Reviews and Q&A
Additional notes
lloydBB.pdf Lloyd's algorithm to choose optimal reference velocities for wave-equation migration
Full-wave-2011.pdf Solving the wave-equation using time domain finite-differences
adjstate.pdf Migration as the adjoint of linearized modeling
WaveTomo-Combo.pdf Full waveform inversion and wave-equation tomography

Exploration Project
Department of
School of
Earth Sciences

Page Maintainer:
Copyright © 2009 SEP.

sep/courses/gp280.1586031062.txt.gz · Last modified: 2020/04/04 20:11 by rahul
CC Attribution-Share Alike 4.0 International
Driven by DokuWiki Recent changes RSS feed Valid CSS Valid XHTML 1.0