Reflection Seismology


Geology 7971 

Fall 2004

Dr. Juan M. Lorenzo
Department of Geology and Geophysics


Lecture times Tuesday 3-4.30 p.m. and Friday 9.00 -10.30Room E217 Howe-Russell Building
Office hours Room 215 (Old Howe-Russell Building)  For appointments: e-mail:


Suggested  textbooks:

Robert E. Sheriff, 1991/2002 Encyclopedic Dictionary of Exploration/Applied Geophysics,  Third/Fourth Edition

  Robert E. Sheriff, L. P. Geldart, 1995 Exploration Seismology , 2nd Ed.,


Introduce seismic data acquisition, processing and related limitations of seismic interpretation

Course work Each student will be responsible for leading  3 hours of presentations on a specific week, using papers on a specific topic and explaining the concept using SUNix and or OmegaSPS.

Students should be quick (by middle of September) to establish a reading list of 10-20 papers on their specific topic and think of example hands-on exercises ASAP.  These papers should be distributed to the rest of the class and instructor in advance of the week in which the student will lead the seminar classes.

Students will also be assigned short questions to research and present to the class on a regular basis.

In the manner of a tentative guide,Tuesdays will be dedicated to the presentation of theoretical concepts and Fridays will be dedicated to presenting hands-on exercises.

On weeks where the instructor leads the meetings, Fridays will be dedicated to hands-on learning using SUnix and OmegaSPS and to short 5-minute presentations to the whole group by each of the students on the current state of their project.

In addition to the topics suggested in the outline below, students are encouraged to include topics of their own interest to be addressed at regular meetings.

Tentative Lectures by visiting geophysics professionals



Fri 27 Introduction to course requirements and computer lab   
Tue 31 Introduction to SUnix and Tape Formats. Data conversion exercise  



Fri 3    
Tue 7 Spectral Analysis, Band-Pass filtering, Geometric spreading Attenuation and AGC  with SUnix  
Fri 10 Fourier Theory, spikes,  
Tue 14 Introduction to OmegaSPS Fresnel Zone, Trace Reverse/Kill  
Fri 17    
Tue 21

CMP/CDP Method

Data Geometry,

Fri 24    
Tue 28 Convolutional Model of the Earth

Synthetic seismograms

CLAY WESTBROOK leads this week



Fri 1      
Tue 5

Fourier Theory, spikes,

SIDNEY EGNEW leads  this week
Fri 8 no class - Fall Holiday  
Tue 12 no class       GCAGS- San Antonio, TX 10-12 Oct; SEG 10-15 Oct
Fri 15


Tue 19 Nyquist frequency, Aliasing Snell's Law, critical angles, spatial aliasing, f-k filtering  
Fri 22    
Tue 26 Reflection Coefficients Wave conversions, Migration  
Fri 29





Tue 2 Normal Moveout Constant velocity stacks, Normal Moveout Stretch  
Fri 5    
Tue 9 Semblance analysis plot, Seismic Velocities GSA Meeting-Denver 7-10
Fri 12    
Tue 16 AVO ADENIYI SAANUMI leads this week
Fri 19    
Tue 23  f-k filtering HAITING SUN leads this week
Fri 26 no class- Thanksgiving holiday  
Tue 30 Migration SWATI GHOSHAL leads this week



Fri 3    

Recommended Pre-requisites understanding of basic structural geology, basic stratigraphy, algebra, trigonometry, basic PC/Mac manipulation, Web navigation using freeware browser. Willingness to learn UNIX-flavored operating systems, SUnix and OmegaSPS seismic processing systems.

Course Grades: Final letter grades are calculated using the results of performance in leading weekly sessions and presenting updates of their projects and participating in discussions.  A (90-100%) , B (80-89.5%), C (60-79.5%) D (50-59.5%), F (less than 49.5%)  Graduate students taking this course will be held to a higher standard than undergraduates commensurate with their academic seniority.