Ge 168 Crustal Geophysics

Date:           Winter Quarter, 2007-2008
Instructor:  Rob Clayton, x6909, clay@gps.caltech.edu
T.A.:            Xiangyan Tian, xytian@gps.caltech.edu

Schedule:
TO BE DETERMINED
Mon 10:00 162 SMudd
Tues 10:00 162 SMudd
Wed 10:00 162 SMudd
Thurs 10:00 162 SMudd

Outline

1. Overview of Course

2. Review of Basics

- Fourier Transforms
- Partial Differential Equations
- Stationary Phase

3. Seismic Reflection Method

3.1 Model of subsurface and generic reflection survey
3.2 Midpoint-offset coordinates, velocity estimation, and stacking
3.3 Zero-offset Imaging - the Fourier Transform (FK) method
3.4 Zero-offset Imaging - the Kirchoff migration method
3.5 Multi-offset imaging using Fourier Transforms
3.6 Multi-offset imaging - the Kirchoff method
3.7 Scattering Theory - inversion methods
3.8 Using amplitude information (AVO)

4. Seismic Refraction Method

4.1 Description of Method
4.2 Fitting V(z) models
4.3 Radon transforms and downward continuation analysis
4.3 Tomographic analysis
4.4 Combining with reflection analysis

5. Seismic Receiver Function Method

5.1 Description of Method
5.2 Using Multiples
5.3 Inversion methods

6. Surface Waves

6.1 Basic physics
6.2 V(z) from phase/group dispersion relations
6.3 Tomographic Inversions of phase/group velocities
6.4 Anisotropy (Love vs Rayleigh Waves)
6.5 Combining Receiver Functions and Surface Waves

7. Waveform modeling using finite-difference.


 

References

1. Exploration Seismology, 1995, by Robert Sheriff and Lioyd Geldart
2. Migration of Seismic Data, 1985, by H.F. Gardner