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| - | ====== GP280 - 3-D Seismic Imaging ====== | + | ====== |
| ==== Course Facts ==== | ==== Course Facts ==== | ||
| - | | Lectures: | MWF 1:30-2:20 PM, Mitchell 452 | | + | | Lectures: | MWF 1:30-2:20 PM, via Zoom | |
| | Instructor: | [[http:// | | Instructor: | [[http:// | ||
| - | | Teaching Assistant: | Huy Le | | + | | Teaching Assistant: | [[http:// |
| - | | TA Office Hours: | TBD, Mitchell 407. Send email to huyle@stanford.edu | | + | | TA Office Hours: | T-Th: 4:00 pm - 6:00 pm (via Zoom). Please |
| - | | 3 units with labs, 2 units without; | + | | 3 units with labs, 2 units without; |
| - | | 6 computer-based homework assignments || | + | | 5 computer-based homework assignments || |
| - | | Schedule: | Schedule (PDF format) {{sep:courses: | + | | Schedule: | [[http:// |
| | On the right: | Stack (after migration) of a 3-D data volume acquired over a salt body.|| | | On the right: | Stack (after migration) of a 3-D data volume acquired over a salt body.|| | ||
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| - | ==== Bulletin | + | ==== Course |
| 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, | 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, | ||
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| == Labs == | == Labs == | ||
| - | [[gp280_labs|Go to GP280 labs page ]] | ||
| - | You will be given 6 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 [[http:// | + | The labs will be distributed through Canvas. |
| + | 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 [[http:// | ||
| + | |||
| + | [[gp280_labs| Go to GP280 labs (older years) ]] | ||
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| |Date | Topic | Notes | | |Date | Topic | Notes | | ||
| - | | 4/1 | Introduction | Introduction | + | | 4/6 | Introduction | | |
| - | | 4/3 | 3D Geometries | chapter1.pdf | + | | 4/8 | 3D Geometries | (Chapter1) |
| - | | 4/5 | Sep3D software | + | | 4/10 | Sep3D software |
| - | | 4/8 | Kirchhoff prestack migration | + | | 4/13 | Kirchhoff prestack migration |
| - | | 4/10 | Kirchhoff prestack migration (isotropy vs anisotropy) | + | | 4/15 | Kirchhoff prestack migration (isotropy vs anisotropy) |
| - | | 4/12 | NMO+DMO+AMO and prestack partial migration | + | | 4/17 | NMO+DMO+AMO and prestack partial migration |
| - | | 4/15 | Wavefield-continuation migration | + | | 4/20 | Wavefield-continuation migration |
| - | | 4/17 | Numerical methods for wavefield-continuation - two way wave equation | + | | 4/22 | Common image gathers in offsets and angles |
| - | | 4/19 | Numerical methods for downward | + | | 4/24 | Common image gathers in offsets and angles | (Chapter 6) | |
| - | | 4/22 | Numerical methods for downward | + | | 4/27 | Numerical methods for wavefield-continuation |
| - | | 4/24 | Wavefield-continuation | + | | 4/29 | Numerical methods for wavefield |
| - | | 4/26 | Common image gathers in offsets and angles | (Chapter 6) | | + | | 5/1 | Definition of waveform inversion – migration as adjoint of linearized |
| - | | 4/29 | Gaussian Beam migration | see Chapter6.pdf | + | | 5/4 | Linearized waveform inversion – phase encoding |
| - | | 5/1 | Plane-wave and phase encoding migration | + | | 5/6 | Imaging and aliasing |
| - | | 5/3 | Plane-wave and phase encoding migration | + | | 5/8 | Imaging and irregular geometries |
| - | | 5/6 | 3D marine wave-equation migration methods | + | | 5/11 | Imaging and irregular illumination + linearized Inversion |
| - | | 5/8 | Imaging and aliasing | + | | 5/13 | Stacking velocity, Dix inversion, and traveltime tomography |
| - | | 5/10 | Imaging and irregular geometries | + | | 5/15 | Inversion of stacking velocities (Chapter 10) and time migration velocity analysis |
| - | | 5/13 | Imaging and irregular illumination + linearized Inversion) | Notes | | + | | 5/18 | Vertical |
| - | | 5/15 | Stacking velocity, Dix inversion, and traveltime tomography | (Chapter 10) | | + | | 5/20 | Tomographic |
| - | | 5/17 | Inversion of stacking velocities (Chapter 10) and time migration velocity analysis | + | | 5/22 | Tomographic velocity updating |
| - | | 5/20 | Residual moveout analysis | + | | 5/25 | Memorial Day, No class | | |
| - | | 5/22 | Vertical and tomographic | + | | 5/27 | Full waveform inversion (FWI) | (Notes) | |
| - | | 5/24 | Tomographic velocity updating | + | | 5/29 | Full waveform |
| - | | 5/27 | Memorial Day, No class | | | + | | 6/1 | Migration velocity analysis by wavefield-continuation |
| - | | 5/29 | Wave equation migration velocity analysis | + | | 6/3 | Migration velocity analysis by wavefield-continuation | (Notes) | |
| - | | 5/31 | Linearized | + | | 6/5 | Tomographic Full waveform inversion |
| - | | 6/3 | Principles of full-waveform inversion | + | | 6/8 | Full waveform inversion with Model Extension (FWIME) | (Notes) | |
| + | | 6/10 | Reviews and Q&A | | | ||
| == Additional notes == | == Additional notes == | ||
