Note Outline: Refraction Seismic Methods

Introduction

• Seismic Methods: Refraction and Reflection
• Advantages and Disadvantages of Seismic methods versus other methods studied
• Advantages and Disadvantages of Refraction and Reflection Methods
• Elastic Waves
• Types of Seismic Waves
• Wave Propagation: Wavefronts and Raypaths

Seismology and Geology

• Wave Interaction with Boundaries
• Snell's Law
• Velocities and Rock Properties
• Seismic Velocities of Common Earth Materials

Refraction Basics

• Another Simple Earth Model: Low-Velocity Layer Over a Halfspace
• Head Waves
• Records of Ground Motion
• Travel-time Curves for a Simple Earth Model
• First Arrivals
• Determining Earth Structure from Travel Times