ErSE 210: Basic Seismology

Instructor: Gerard Schuster. TA TBA;
Book: Basic Principles of Wave Propagation (Schuster)
Grade: 1/4 Hmwk, 1/4 Midterm, 1/4 project, 1/4 Final.
Office Hours: Immediately after each class
Classroom Times: Sunday and Tuesday 10:30-11:50, Classroom: Bldg. 9 Rm 4221
Notice: Late assignments will not be accepted after 1 week from due date, and any late assignment will have 5% deducted per day.

Objective: Learn fundamentala physics and computational aspects of seismology as applied to exploration and earthquake geophysics. Topics inlcude derivation of acoustic and SH wave equations, plane wave and point source solutions; principles of Fermat, Snell, and Huygen; reflection+transmission coefficients; reciprocity eqns.; finite-difference solutions; convolution forward modeling; elastic wave equation; eikonal equation; surface waves; dispersion relationship; guided waves; earthquakes; head waves; diving waves; Green's functions; transport equation; and tomography.

Background Material: Gilbert Strang's Linear Algebra Course and Crewes MATLAB programs.. A useful code written by Yunsong Huang takes a jpg photo of a tomogram and transforms it into a velocity model matrix. Download here.

PDF of Book

Zoom Lectures Zip (16 Gbytes)

DATE & READING

LECTURE

EXERCISES

Zipped Zoom Recordings

. PDF of Book and Outline*. Seismic Overview PPT and Undergrad Seismic Overview PPT, Olduvai . Recorded Lectures on KAUST Site
01/24-01/26: Ch. 1 Lecture: Acoustic Stress and Strain*: Stress, strain, infinitesimal linear assumption, Hooke's Law, Newton's Law, acoustic wave equation, bulk modulus, density. Lecture: Planar Solutions to Acoustic Wave Equation:**** Wave eqn., plane wave solution, period, apparent wavelength, wavenumber, apparent velocity, slowness, aliasing, Green's functions, spherical solutions group velocity and waveguides. Exercises: Problems 1-3 on pages 7 and problems 1-6 on pages 14-15 in Chapter 1 (Due 02/13). PhD Hmwk 1 (Not Due) Jan. 31

Feb. 2

02/07-02/09: Ch. 1 and Refraction Notes: Lectures: Dispersive Waves. Talking Lecture: Reflection+Transmission Coefficients** (Ch. 1) and Talking Lecture: Head Waves, Diving Waves, Caustics, Shadow zones, Refraction Tomography. Layered Refraction Seismology. Exercises: Page 30 in book, Problems 1, 2, 3 , 6 (Due 02/28). Animation of a shadow zone formation,Waveguides. Feb. 7

Feb. 9

02/07-02/16: Page 75-88: Eikonal Eqn. Chapter 2 Lectures: Lecture: Two/Three Layers Refraction*. and Attenuation, Green's functions, eikonal equation, and FD solution Lab: Sherif's refraction lab (Due 02/23).

Exercises: Homework (Due 03/02)

Feb. 14

Feb. 16

02/21-02/23: Traveltime Tomography Chapters Lectures: Attenuation*, Basic Optimization**. Lab: Matlab Tomography Exercises 1, 2 and 3 (Due 03/02) Feb. 21

Feb. 23

02/28 & 03/02 Traveltime Tomography Chapters Lectures: Traveltime Tomography Theory*: traveltime integral*, linearization*, least squares solution and Intuitive Preconditoner. Resolution and Covariance Matrices*, and Examples* for Traveltime Tomography*. Labs: Tomography Field Data Lab (Due 03/23) Feb. 28

March.2

03/07 & 03/09: Tomography (Cont.) & Finite Difference Chapters Lectures: FD Soln. to Wave Equation*, Stability and Dispersion and ABC* , Easy Advanced ABC, and Rigorous FD. Lab: VSP Modeling Lab (Due 03/22), read Chapter 3.

Exercises: Do 4 out of the following 5 exercises: Exercises 1, 2, 3, and 4 page 66 and Exercise 3 on page 69. (Due: 03/23)

March 7

March.9

03/16: Super-virtual Refraction Interferometry (SVI) Lecture: Super-virtual Refraction Interferometry* (SVI) , and pdf papers: Near Surface Geophysics 2012 and TLE 2011 Lab: SVI Lab (Due 04/07)

Read Iterative SVI paper for lab .

March 14

March 16

03/21-3/30: Parsimonious Refraction Interferometry* and FD eikonal and Finite-Frequency Tomographic Resolution . Reading: Q Inversion and Parsimonious Refraction Interferometry Paper and PRI Nature Paper.

Lab: PRI Lab (Due 04/06).

Eikonal Lab (Due 04/13)

March 21

March 23

March 28

March 30

04/06-04/13: "Physics of Elastic Wave Propagation" chapter Lecture: Elastic Stress Tensor** and Strain* Tensor.

Midterm April 6

2D FD Acoustic Modeling Lab with Diving/Head Waves(Due 04/13). Diving Wave Paper. Strain Hmwk (Due 04/13), Poisson Ratio . April.6_Midterm

April.11

04/18-04/20: "Physics of Elastic Wave Propagation" chapter Elastic waves:** P, SH, SV waves, surface waves, PS and PP reflection coefficients, Love and Rayleigh waves and AVO*. 2D Stress-Strain Hmwk (Problems 1-8: Due 04/20)

AVO paper and AVO paper

April 18

April 20

04/25-04/27: "Physics of Elastic Wave Propagation" chapter Generalized Hooke's law and anisotropic wave equation*, 21-to-2 isotropic coefficients. and Surface Wave Primer. TBA and Visco. April 25

April 27

05/02-05/04: Staggered grid FD papers: 2-4 FD and Luo+Schuster FD. and SH & Guided Waves and Dispersion Curves*.

Staggered Grid FD Solution to Elastic Wave Equation*.

Labs:
(1) SVI Lab: SVI of Qademah Data (Not due)
Choose 1 out 2: (2) 2D Elastic FD. Modeling+PSV Reflection Lab (Due 05/02)
(3) 2D Elastic FD. Modeling+Polarity Lab 2(Due 05/02)
May 2

May 4

05/02-05/04: Physics of Elastic Wave Propagation chapter Lecture: earthquakes, explosions, and slumps***. Migration. Eikonal Lab Staggered grid papers: Levander's 2-4 FD, Luo+Schuster FD. May 2 Passcode: QYV0@Q+g

May 4 Passcode: +N1yT1AN

05/09-05/11: SH Wave Equation Lab: 2D Elastic FD Radiation Pattern Lab () .
TBA TBA Strain Hmwk and 1D Surface Wave Inversion Lab