by Juan M. Lorenzo y Ricardo Zapata

Click here for Spanish version (in progress, sorry)

SEISMIC RESOLUTION

Vertical Resolution
Horizontal Resolution
Fresnel Zone

SEISMIC ACQUISITION

Seismic Equipment

Common-Midpoint Method
Normal moveout

SIGNAL PROCESSING

Sampling theorem
Linear vs. Angular Frequency
Phase shift
Fourier Theory
Fourier Analysis: Amplitude and Phase
Decibels

RAYPATHS IN THE SUBSURFACE

Rays

MECHANISMS THAT CHANGE SIGNAL STRENGTH

Geometric Spreading
Attenuation
Reflection Coefficients
Automatic Gain Control

NOISE

Multiples
(1) Sea bottom multiples (long-path multiple)
(2) Internal multiples (peg-leg multiples)
(3) Ghosts

PROCESSING SEISMIC REFLECTION DATA

Vrms
Stacking Velocities
Limitiations
Advantages
Migration

THEORETICAL BACKGROUND