# Category:Problems and Solutions

This is the category page for the book, Problems in Exploration Seismology and their Solutions by Lloyd P. Geldart and Robert E. Sheriff. All sections of the book can be located on the wiki below.

## Book description

Focusing on the basic theory required to solve practical problems, this book provides 212 problems, and solutions, which cover a wide range of issues, including least-squares methods, choosing velocities for various situations, z-transforms, determining 2D and 3D field geometries, and solving processing and interpretation problems.

This book is designed for students and for geophysicists who need a refresher on the basic theory required to solve practical problems. Geophysical texts often provide problems, but this book is unique in that it provides solutions also. The authors include a summary of the basic theory required to solve each problem. The 212 problems cover a wide range, including least-squares methods, choosing velocities for various situations, z-transforms, determining 2D and 3D field geometries, and solving processing and interpretation problems.

## Pages in category "Problems and Solutions"

The following 129 pages are in this category, out of 129 total.

### A

- Accuracy of normal-moveout calculations
- User:Ageary/Introduction
- User:Ageary/Theory of seismic waves
- Alias filters
- Amplitude variation with offset for seafloor multiples
- Amplitude/energy of reflections and multiples
- Attenuation calculations
- Attenuation of air waves
- AVO versus AVA and effect of velocity gradient

### B

### C

### D

- Dependence of resolvable limit on frequency
- Dependence of velocity-depth curves on geology
- Depth and dip calculations using velocity functions
- Destructive and constructive interference for a wedge
- Determining lithology from well-velocity surveys
- Determining reflector location
- Determining static corrections from first breaks
- Determining vibroseis parameters
- Differential moveout between primary and multiple
- Diffraction from a half-plane
- Diffraction traveltime curves
- Digital calculations
- Dip, cross-dip, and angle of approach
- Directional geophone responses to different waves
- Directivities of linear arrays and linear sources
- Directivity of a harmonic source plus ghost
- Directivity of a source plus its ghost
- Directivity of linear sources
- Distinguishing horizontal/vertical discontinuities
- Disturbance produced by a point source
- Diving waves

### E

- Effect of burial history on velocity
- Effect of coil inductance on geophone equation
- Effect of filtering on event picking
- Effect of migration on plotted reflector locations
- Effect of reflector curvature on a plane wave
- Effect of signal/noise ratio on event picking
- Effect of station angle on location errors
- Effect of time picks, NMO stretch, and datum choice on stacking velocity
- Effects of weathered layer (LVL) and permafrost
- Estimating lithology from stacking velocity
- Extension of the sampling theorem

### F

### H

### I

### M

### P

### R

- Rayleigh-wave relationships
- Reflection and refraction laws and Fermat’s principle
- Reflection and transmission coefficients
- Reflection-point smear for dipping reflectors
- Reflection/refraction at a liquid/solid interface
- Reflection/transmission coefficients at small angles and magnitude
- Reflections/diffractions from refractor terminations
- Reflectivity versus water saturation
- Reflector dip in terms of traveltimes squared
- Refractions and refraction multiples
- Reinforcement depth in marine recording
- Relation between average and rms velocities
- Relation between lithology and seismic velocities
- Relation between nepers and decibels
- Relationship for a dipping bed
- Response of a triangular array
- Ricker wavelet relations

### S

- Second approximation for dip moveout
- Selecting optimum field methods
- Selecting survey parameters
- Semblance
- Solving equations
- Sosie method
- Space-domain convolution and vibroseis acquisition
- Streamer feathering due to cross-currents
- Sum of waves of different frequencies and group velocity
- Suppressing multiples by NMO differences