Instrument: Echo sounder - single-beam

Acronym: Echo Sounder SB

External Identifier: skos:broadMatch: http://vocab.nerc.ac.uk/collection/L05/current/156/

Description

A single-beam echo sounder is an instrument that measures water depth at a single point below the platform by timing pulses of sound reflected on the seafloor. The echo sounder transmits and receives sound, accurately measuring the time it takes to leave the sounder, reach the bottom and return to the sounder. It then converts this information into digital or graphic representations of the bottom depth and relief. The average echo sounder consists of a transmission and reception unit that sends sound signals through the water, receives and decodes information and converts that information into either a graphic or visual form. Attached to the receiver is a transducer that acts as a microphone and a speaker under the water. Sound waves travel at approximately 1500 m/s through the water dependent on water temperature". more from LMS Technologies

Datasets (7)

Dataset Name	PI-Supplied Description	PI-Supplied Name
Data collected daily along the ship track in JGOFS format from ARSV Laurence M. Gould and RVIB Nathaniel B. Palmer cruises to the Southern Ocean from 2001-2003 as part of the Southern Ocean GLOBEC project.	Used to measure the water depth. ODEC Bathy 2000 (NBP0103, NBP0104, NBP0202) Simrad EK200 Sonar (NBP0103, NBP0104, NBP0202) Knudsen 320B/R (LMG0104, LMG0201, LMG0203, LMG0205, LMG0302, NBP0204)	Echo Sounder
Cruise track data from ship underway data acquisition system from cruises KN193-03, B4-2008, B9-2008,and B10-2008 in the subpolar North Atlantic and Iceland Basin in 2008 (NAB 2008 project)	Knudsen Engineering Model 320BR sub-bottom profiler, echosounder operating at 12 kHz	Echo sounder - single-beam
Cruise track data from ship's underway data acquisition system from R/V Oceanus cruise OC454-02 in the Mediterranean Sea (Pickled Protists project)		Echo sounder - single-beam
Cross-channel geometry of Groves Creek salt marsh, Skidaway Island Georgia, USA, Aug. 2013 to March 2015		Ohmex Sonarmite echosounder with RTK-GPS positioning
Inshore Gulf of Maine Survey of Atlantic Herring Sentinel Spawning Grounds: Acoustic time and location data from the F/V Jennifer & Emily NEC-JA2005-1 from the Gulf of Maine, 2006 (NEC-CoopRes project)	FEMTO Electronics Limited DE9320 Digital Echosounder interfaced with a 75 kHz hull mounted transducer.	Echo Sounder
Acoustic Survey Shrimp Survey, Gulf of Maine: time, date, location of ping data from the F/V Tenacious NEC-DS2003-1, 2004 (NEC_ProjDev project)	For the first four nights of survey the acoustic equipment consisted of a FEMTO Electronics, Ltd. DE9320 digital echosounder configured to operate simultaneously at 40 and 120 kHz connected to a FEMTO dual frequency transducer operating at 40 and 120 kHz frequencies. Project participants experimented with the addition of a 75 kHz frequency system on surveys conducted October 7 and 8. This was a completely independent system, consisting of a FEMTO DE9320 digital echosounder configured for 75 kHz and a FEMTO 75 kHz single-frequency transducer. The transducer was mounted on the same towing body, directly behind the 40/120 kHz transducer.	Echo Sounder
Simrad acoustic data from RVIB Nathaniel B. Palmer cruise NBP0204 in the Southern Ocean in 2002 (SOGLOBEC project; Southern Ocean Krill project)	Used to measure the water depth. SIMRAD EK 500	Echo Sounder