The response of a point source in a liquid layer overlying a liquid half space
Name
33195329-MIT.pdf
Description
Full printable version
Size
4.9 MB
Format
Adobe PDF
Checksum (MD5)
a93f85221b5bd11af22b674df51096b1
Author(s)
Greenfield, Roy
Advisor(s)
Stephen M. Simpson, Jr.
Date Issued
1962
Publisher
Massachusetts Institute of Technology
Abstract
The response to a harmonic point source in a liquid layer overlying a liquid half space is computed as a function of frequency. Included are the contributions form all normal modes that occur, and the branch-line integral representing the refraction arrival. The value of the refraction arrival is given in terms of the complex error function. The effect of different velocity and density contrasts are considered, and the effect of source depth and the distance to the receiver are investigated. The results giving the behavior of the magnitude of the branch line show that it is much larger at the mode cutoffs than at other values of frequency. The total amplitude of the response shows a regular oscillation in the frequency range in which two modes are present, and somewhat irregular high and low values over the range in which three modes are present. This behavior reflects the difference in amplitude at frequencies for which modes reinforce or interfere with each other.
Description
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1962.
"June 1962."
Includes bibliographical references (leaf 73).
Subjects
Geology and Geophysics.
MIT Department
Massachusetts Institute of Technology. Department of Geology and Geophysics
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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