Ocean Acoustics

Source: NOAA Fisheries

Ocean acoustics is the study of sound and its behavior in the sea. When underwater objects vibrate, they create sound pressure waves that alternately compress and decompress the water molecules as the sound wave travels through the sea. Sound waves radiate in all directions away from the source. The compressions and decompressions associated with sound waves are detected as changes in pressure man-made sound receptors such as a hydrophone, or underwater microphone. A scientific echosounder uses sonar technology for the measurement of underwater physical and biological components. The sonar and electronics record the time interval between emission and return of a pulse.

Cyprus Subsea developed ocean acoustic monitoring and detection systems that we’ve integrated into autonomous ocean platforms such as underwater gliders and buoys.

DeepEcho Module

DeepEcho Echosounder and Transducer

The DeepEcho Module is the first scientific wide-band echosounder – deployable to a depth of 1000 meters – successfully integrated onto an ocean glider.

CSCS redesigned the compact version of SIMRAD EK80 wideband transceiver (WBT) echosounder in order to fit into the payload bay of a Seaglider. As a result, the reconfigured WBT electronics fit into a cylindrical aluminium pressure housing. Our design includes a 333 kHz single-beam transducer.

gListen Board

gListen Board

The gListen Board is an Ethernet to RS-232 converter with voltage regulation and onboard memory for downloading data.

Paired with an OceanSonics icListen digital hydrophone, the gListen board keeps track of events detected by the hydrophone. At the end of each dive, the board reports the detected events via satellite.

The board facilitates near real-time event detection and spectrum retrieval. User-configured frequency spectra can also be transmitted.

PAM Smart Buoy

Smart Whale Sounds Buoy

A Passive Acoustic Monitoring (PAM) Smart Buoy offers real-time acoustic monitoring with a digital hydrophone, environmental data buoy and GSM Bridge.

When deployed in the ocean, the PAM Smart Buoy captures sounds from the surrounding environment & facilitates real-time acoustic data transmission.

Cyprus Subsea has integrated a digital hydrophone with a GSM bridge to provide users with real time connection to their hydrophone providing both an acoustic stream and detected events.