Development of an amphibious seismo-acoustic recording system

Jeannette Greene, University of Rhode Island

Abstract

A system for measuring seismic interface waves was developed as an initial step for examining the effect of sediment shear wave velocity on sonar performance in littoral waters. This system, called the Amphibious Seismo-Acoustic Recording System (ASARS), can be easily deployed on land or towed on the seabed by surface craft. ^ ASARS was designed and components were tested. Interface waves were generated by transient sources (weight drops) of different masses. Rayleigh waves were successfully recorded during both terrestrial and shallow-water tests. The data was examined in the time and frequency domains and processed according to both established Spectral Analysis of Surface Waves (SASW) methods and the K-Omega method to determine the interface wave velocities of the sediment. Test results demonstrated the ability of ASARS to support near-surface interface wave studies on land and in water. ^ A User's Manual for ASARS was developed for the benefit of future users and is included in this thesis.^

Subject Area

Engineering, Marine and Ocean|Physics, Acoustics

Recommended Citation

Jeannette Greene, "Development of an amphibious seismo-acoustic recording system" (2011). Dissertations and Master's Theses (Campus Access). Paper AAI1494873.
http://digitalcommons.uri.edu/dissertations/AAI1494873

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