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Figure 63 Picture

Figure 63

Figure 63. Marti’s continuous recording sounder built by the French engineer Pierre Marti. In 1919, Marti began designing and describing sounding machines based on acoustic methods. This recording device allowed measuring time of sound emanation and time of reception, thus giving travel time which can be used to determine depth.

Photo Category: Oceanography - Historical instruments

Author: Y. Berard/Oceanographic Museum of Monaco/ NOAA

License: Public Domain Mark 1.0 (Public domain)
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18th October 2015
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