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The generalized reciprocal method of seismic refraction interpretation /

Bibliographic Details
Main Author: Palmer, Derecke (Author)
Other Authors: Burke, Kenneth B. S.
Format: Book
Language:English
Published: Tulsa, Okla. : Society of Exploration Geophysicists, 1980.
Subjects:
Seismic refraction method.
Méthode sismique-réfraction.
Brechung
Seismische Welle
Table of Contents:
  • TRAVELTIME EXPRESSIONS: The seismic model
  • Traveltime expressions
  • REFRACTOR VELOCITY DETERMINATION: The velocity analysis function
  • Plane layers
  • THE TIME-DEPTH FUNCTION: Definition
  • The conventional time-depth
  • The delay time
  • Hales's method
  • The depth conversion factor
  • Time-depths near shotpoints
  • Continuous change of velocity with depth
  • SYNTHETIC MODELS: Irregular refractor surface
  • Irregular ground surface
  • Irregular ground and refractor surface
  • Continuous change of velocity with depth
  • Detail of refractor definition
  • SELECTION OF XY-VALUES: Small-scale irregularities
  • Determination of an optimum XY-value
  • UNDETECTED LAYERS: The blind zone
  • Second events
  • Velocity inversions
  • Detection of hidden layers and velocity inversions
  • AVERAGE VELOCITY: Errors for the three-layer case
  • Comparison with hidden layer errors
  • Corrections for surface layers
  • Synthetic example
  • RECIPROCAL TIME: Reciprocal times for distant shots
  • Corrections for errors in reciprocal times
  • The intercept time
  • THE TIME SECTION: Uniqueness of the time section
  • Consistency between data and interpretation
  • Field data requirements
  • AN INTERPRETATION ROUTINE: Data processing
  • Interpretation
  • Depth section
  • Wavelength considerations
  • A FIELD EXAMPLE: Geologic setting
  • Seismic velocity stratification
  • Initial interpretation
  • Determination of XY-values
  • Revised interpretation
  • Small refractor irregularities
  • Accuracy of depth estimates
  • Refractor velocity variations.