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Chirp rests on the deck of R/V Bold Horizon

By Pacific Coastal and Marine Science Center
An instrument rests on the deck of a ship, its cables suspended above it, while a scientist looks on.
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Detailed Description

This instrument, the Edgetech SB-516 or "chirp", emits acoustic signals that penetrate the sediment on the seafloor. The reflected sound is recorded and is used to create a cross-section image, or profile, of the sub-bottom.

Sources/Usage

Public Domain.