• Taira, K., S. Kitagawa, T. Yamashiro, and D. Yanagimoto, 2004: Deep and bottom currents in the Challenger Deep, Mariana Trench, measured with super-deep current meters. J. Oceanogr., 60, 919926, https://doi.org/10.1007/s10872-005-0001-y.

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  • van Haren, H., C. Berndt, and I. Klaucke, 2017: Ocean mixing in deep-sea trenches: New insights from the Challenger Deep, Mariana Trench. Deep-Sea Res. I, 129, 19, https://doi.org/10.1016/j.dsr.2017.09.003.

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Deep Caller for Ocean Acoustic Releases

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  • 1 Royal Netherlands Institute for Sea Research (NIOZ), and Utrecht University, Den Burg, Netherlands
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Abstract

We relate about the custom-made modification of a Benthos deep-ocean acoustic release into a “deep caller,” an acoustic transducer for calling and releasing ocean acoustic transponding releases that cannot be reached from a standard deck unit. The self-contained deep caller can be lowered down to 12 km on any nonconducting winch cable. It may prove useful to retrieve subsurface instrumentation like a seafloor lander hidden behind large rocks or in a narrow canyon, or moorings in very deep topographic depressions. We used it to retrieve a 7-km-long mooring from 10 910-m depth in the Challenger Deep, Mariana Trench, that a standard deck unit could not reach.

© 2020 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).

Corresponding author: Hans van Haren, hans.van.haren@nioz.nl

Abstract

We relate about the custom-made modification of a Benthos deep-ocean acoustic release into a “deep caller,” an acoustic transducer for calling and releasing ocean acoustic transponding releases that cannot be reached from a standard deck unit. The self-contained deep caller can be lowered down to 12 km on any nonconducting winch cable. It may prove useful to retrieve subsurface instrumentation like a seafloor lander hidden behind large rocks or in a narrow canyon, or moorings in very deep topographic depressions. We used it to retrieve a 7-km-long mooring from 10 910-m depth in the Challenger Deep, Mariana Trench, that a standard deck unit could not reach.

© 2020 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).

Corresponding author: Hans van Haren, hans.van.haren@nioz.nl
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