A Year-long Hydroacoustic Survey of the Mariana Islands Region

Gabrielle Tepp; Robert P. Dziak; Matthew M. Haney; Lauren Roche; Haru Matsumoto

doi:10.23919/oceans44145.2021.9705805

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A Year-long Hydroacoustic Survey of the Mariana Islands Region

Gabrielle Tepp·Robert P. Dziak·Matthew M. Haney·Lauren Roche·Haru Matsumoto

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Abstract

The Mariana Islands region hosts interesting geological features as well as abundant biodiversity. The subduction zone and back-arc spreading center have led to active volcanism that can have impacts on local islanders, aircraft flying in the region, and military activities. We deployed a small aperture hydrophone array from June 2017 to June 2018 in the Marianas back-arc to better characterize submarine volcanic activity in the region. In addition, we recorded other activity, including calls from historically understudied Bryde’s whales and T-phases from earthquakes. Here, we describe and discuss preliminary results from the array.

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Source-reported bounding extent: 11.275386692600028° to 16.909683615558635° latitude; 143.096923828125° to 146.76635742187497° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Gabrielle Tepp, Robert P. Dziak, Matthew M. Haney, Lauren Roche, Haru Matsumoto. 2021. A Year-long Hydroacoustic Survey of the Mariana Islands Region. https://doi.org/10.23919/oceans44145.2021.9705805

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