Date of Award


Degree Type


Degree Name

Master of Science in Ocean Engineering




Ocean Engineering

First Advisor

James H. Miller


Distributed acoustic sensing (DAS) systems provide the capability to monitor a wide range of seismic and acoustic events using a fiber optic cable and an optical sensor. Existing and proven methods of monitoring acoustic events have used geophones to sense vibrational events. To explore the limits of how and when best to utilize these monitoring devices, this study investigated the limits and capabilities of both DAS and geophones. By comparing data received concurrently from each type of system, we can better understand how to utilize available monitoring equipment.

To compare the performance of both these instruments, an experiment was designed using the Ocean Bottom Recorder (OBX) geophone and a DAS system to receive Rayleigh waves. Using a hammer and a steel plate, a Rayleigh wave was generated and recorded by both instruments. The hammer strike was repeated multiple times over the entire length of the installed DAS array. The data was then compared between the OBX geophone and the DAS system.



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