Interface Wave Source Concepts for a Seismo-Acoustic Sonar
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Authors
Gaghan, Frederick E.
Baker, Steven R.
Muir, Thomas G.
Subjects
Advisors
Date of Issue
1998
Date
1998
Publisher
Language
Abstract
A seismo-acoustic sonar concept is being developed which uses guided interface (Rayleigh or Scholte)
waves to detect naval md land mines buried in beach or sea floor sediments. The characteristics exhibited by these
waves which make them suitable for such an application are that ( I) they are the most significant disturbance along a
boundary, being localized within a layer proportional to the wavelength, and (2) the propagation horn a compact
source is cylindrical. As a result, the wave intensity on targets of interest is enhanced and the reverberation is
suppressed, compared to a bulk wave. To selectively excite Rayleigh or Scholte waves, a harmonic source employed at
the interface must excite elliptical particle motion in a vertical plane containing the direction of propagation. Several
source concepts are being investigated. The results to date of field tests will be described.
Type
Article
Description
Series/Report No
Department
Physics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
2 p.
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.