Oceanography > Issues > Archive > Volume 25, Issue 1

2012, Oceanography 25(1):116–127, http://dx.doi.org/10.5670/oceanog.2012.10

Hydroacoustic Monitoring of Oceanic Spreading Centers:
Past, Present, and Future

Authors | Abstract | Full Article | Citation | References







Authors

Robert P. Dziak | Cooperative Institute for Marine Resources Studies/Oregon State University, Hatfield Marine Science Center, Newport, OR, USA

DelWayne R. Bohnenstiehl | Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC, USA

Deborah K. Smith | Geology and Geophysics Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA

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Abstract

Mid-ocean ridge volcanism and extensional faulting are the fundamental processes that lead to the creation and rifting of oceanic crust, yet these events go largely undetected in the deep ocean. Currently, the only means available to observe seafloor-spreading events in real time is via the remote detection of the seismicity generated during faulting or intrusion of magma into brittle oceanic crust. Hydrophones moored in the ocean provide an effective means for detecting these small-magnitude earthquakes, and the use of this technology during the last two decades has facilitated the real-time detection of mid-ocean ridge seafloor eruptions and confirmation of subseafloor microbial ecosystems. As technology evolves and mid-ocean ridge studies move into a new era, we anticipate an expanding network of seismo-acoustic sensors integrated into seafloor fiber-optic cabled observatories, satellite-telemetered surface buoys, and autonomous vehicle platforms.

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Full Article

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Citation

Dziak, R.P., D.R. Bohnenstiehl, and D.K. Smith. 2012. Hydroacoustic monitoring of oceanic spreading centers: Past, present, and future. Oceanography 25(1):116–127, http://dx.doi.org/10.5670/oceanog.2012.10.

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