Gravity & Seismic Surveys (Geol 7900.5- Fall 1998)
*
*from http://www.lacosteromberg.com
Department of Geology and Geophysics
Louisiana State University
Lectures: 4-5.30 p.m. Room E202
Labs: 4-7.00 p.m. Subsurface Laboratory (E217)
Howe-Russell Complex
24 meetings
Gravity Surveys
12 x 1.5 lectures and labs
2 days of field work (2 weekdays or 2 weekend days)
Seismic processing5 lectures
7 x 1.5 hr lab exercises
Instructor: Dr. Juan M. Lorenzo
Textbook: Encyclopedic Dictionary of Geophysics by R.E. Sheriff(recommended but not required)
LECTURES
AUGUST
M. 31 Fundamentals- A relative measure of gravity
SEPTEMBER
W. 2 M. 7 Labor Day-no class
W. 9
M 14
W 16
M 21, W 23 no classes
M 28
W 30
Free-Air Correction
Bouguer Correction and Terrain Corrections
Tidal effects
Instrument Drift
Reduction of Data
Reduction of Data
OCTOBER
M 5
W 7
M 12
W 14
M 19
W 21
M 26
W 28
29-30 - Fall Holiday
Simple Models -edge effects- Lab
Modeling Field data
Seismic Acquisition Introductory Video
P and S waves, Snell's Law
CMP method, ray paths
NMO, stacking,
Sea-floor multiples
Reflection coefficients
NOVEMBER
M 2 W 4
M 9
W 11
M.16
W 18
M 23
W 25
26 - 29 Thanksgiving holiday
M 30
F-k filtering Lab
Lab- V rms,Vint, V semblance Constant velocity stacks. Semblance Analysis, exampleSemblance Plot
F-k filtering
Principles of Migration -Lecture
Principles of Migration -Lab
Review
Lab 3 on bandpass Filtering and Spectral Analysis Bandpass filtering, Notch filters
Vertical Resolution, Nyquist frequency
DECEMBER
M 2 Dec. -
Lab 4 on seismic processing (ProMAX) Take-home exam
Last modified on November 23, 1998 by Juan M. Lorenzo
