Observational Earthquake Seismology

Detailed Contents (Fall 2001)

Date Topic(s)
08/26 Seismology & Geosciences • Complex Numbers • Vectors and Tensors
08/27 Vectors and Tensors (cont'd) • Vector Calculus • Eigenvalues
08/29 Coordinate Systems • Fourier Transforms and Spectra
09/31 Fourier Transform Properties
09/03 Labor Day Holiday (No Classes)
09/05 Digital Fourier Transforms • Sample Rate & Nyquist Frequency • Stress
09/07 Stress • Isotropic and Deviatoric • Cauchy's Relation • Principal Axes
09/10 Equations of Equilibrium • Normal and Shear Stress on a Plane
09/12 Deformation & Strain • Hooke's Law • Elastic Parameters and Moduli
09/14 The Equations of Motion • Wave Solutions in 1D • D'Alembert's Solution
09/17 Separation of Variables • Standing Waves • Traveling Waves
09/19 Waves in 3D - Plane Waves • Wavenumber and Wavenumber Vectors
09/21 Slowness and Apparent Velocity • Body-wave Particle Motions
09/24 Seismogram Coordinates (Radial & Transverse Directions) • Eikonal Equations
09/26 Eikonal Equations (cont'd) and Ray Approximations • Snell's Law
09/28 Travel-Time & Distance Formulas in Simple Media
10/01 Seismic Rays in a Layer Over a Half-Space Model
10/03 Differential Equations for Seismic Ray Tracing (I)
10/05 No Class - CJA Travel • Students Read Seismogram Interpretation Chapter
10/08 Fall Break (No Classes)
10/10 Fall Break (No Classes)
10/12 SH Reflection Coefficients (Jordi Julia)
10/15 P-SV Reflection Coefficients (Jordi Julia)
10/17 Ray Amplitudes • Seismic-wave Attenuation (Jordi Julia)
10/19 Rays in Spherically Symmetric Media
10/22 Free-Surfaces & Body Waves • Pre- and Post-Critical Surface Reflections
10/24 Rayleigh Wave Potentials for a Half-Space • Rayleigh-Wave Particle Motion
10/26 Love Waves (Layer Over Half-Space) • Phase-Velocity • Modes & Eigenfunctions
10/29 Dispersion • Group Velocity • Phase Velocity • Tsunamis (A Quick Review)
10/31 Normal Modes • The String • The Earth
11/02 Earth Structure • Forward & Inverse Modeling • Herglotz-Weichert Inversion
11/05 An Overview of Earth Structure
11/07 Exam on Stress, Strain, Ray Theory, & Surface Waves
11/09 Faulting Sources • P-Wave Polarity Patterns • First-Motion Mechanisms
11/12 Static Deformations • Geodesy • GPS • InSAR
11/14 Explosive Sources • Near & Far Field Motions
11/16 Single Couples • Double Couples • Seismic Wave Radiation Patterns
11/19 Seismic Moment • Moment-Rate • Moment Tensor & Double Couples
11/21 Moment-Tensor Decomposition • Non-Double-Couple Events
11/19 Earthquakes Faulting • Coulomb Failure Criteria • Stick Slip
11/21 Fault Strength & Friction • Stress on a Fault
11/26 Moment-Rate & Far-Field Source-Time Functions
11/28 A One-Dimensional Model of Large Earthquakes (Haskell) • Directivity
11/30 Stress Drop • Earthquake Magnitude (mb, mB, Ms) • Energy (Mw)
12/03 Earthquakes & Tectonics Review
12/05 Exam on Seismic Sources


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Prepared by: Charles J. Ammon