Estimation of seismic wave velocity at seafloor surface and sound source localization based on transmitted wave observation with an ocean bottom seismometer offshore of Kamaishi, Japan

• Published in: Japanese Journal of Applied Physics
• Main Author: Iwase, Ryoichi
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IOP Publishing 2016
• Subjects: baleen whales
• Online Access: http://dx.doi.org/10.7567/jjap.55.07kg01; http://stacks.iop.org/1347-4065/55/i=7S1/a=07KG01/pdf; http://stacks.iop.org/1347-4065/55/i=7S1/a=07KG01?key=crossref.7bbd5d2f221a3037ba494537c21ad501; https://iopscience.iop.org/article/10.7567/JJAP.55.07KG01; https://iopscience.iop.org/article/10.7567/JJAP.55.07KG01/pdf

Abstract An in situ method of estimating the seismic wave velocity at the seafloor surface by observing the particle motion of a wave transmitted into the sediment is presented; this method uses a sound source whose location is known. Conversely, a sound source localization method using the obtained seismic velocities and involving particle motion observation is also presented. Although this method is applicable only when the sound source exists within the critical incidence angle range, it is expected to contribute to the tracing of vocalizing baleen whales, which are unknown around Japanese waters.