Reinforcement depth in marine recording

From SEG Wiki
Revision as of 17:07, 7 November 2019 by Ageary (talk | contribs) (remove)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Problem 3.5a

For a source at a depth , show that the maximum amplitude of a downgoing incident wave and its reflection at the surface of the sea occurs at the depth , where is the angle of incidence, by expressing the pressure in the form used in equations (3.1b,d) and applying appropriate boundary conditions.


Since the interface is liquid/vacuum, only two waves exist, the incident and reflected P-waves. Taking the z-axis positive downward, we take in the form

There is only one boundary condition, namely that at . This gives Using Euler’s formulas (see Sheriff and Geldart, 1995, problem 15.12a), we get

upon inserting the time factor. The amplitude of the combined incident and reflected waves is

It is a maximum when , that is, when

Continue reading

Previous section Next section
Zoeppritz’s equations for incident SV- and SH-waves Complex coefficient of reflection
Previous chapter Next chapter
Theory of Seismic Waves Geometry of seismic waves

Table of Contents (book)

Also in this chapter

External links

find literature about
Reinforcement depth in marine recording
SEG button search.png Datapages button.png GeoScienceWorld button.png OnePetro button.png Schlumberger button.png Google button.png AGI button.png