hydrophone
Submerged listening device
A hydrophone is an underwater microphone—a device that detects sound waves traveling through water.
Hydrophones are used to monitor marine life, detect submarines, and study ocean acoustics.
Arrays of hydrophones can pinpoint the location of sounds beneath the surface: Researchers tracked whale songs using a network of hydrophones.
Energy form converter
- piezoelectricCharge from deformation
- ceramicFired clay material
- sensorInput-detecting device
- microphoneAudio input device
preamplifier · amplifier · diaphragm · impedance · voltage · conversion · signal · output
Underwater detection by echoes
- pingBrief metallic tone
- echoReflected sound wave
- frequencyRate of recurrence
- soundwaveTraveling pressure disturbance
decibel · hertz · amplitude · waveform · resonance · detection · propagation · reflection
Below the surface
- oceanMassive saltwater body
- seaSaltwater body, not ocean
- submarineUnderwater naval craft
- depthsLowest or innermost regions
seabed · oceanography · aquatic · submersible · diving · pressure · salinity · thermocline
Ongoing observation of something
- listeningAttending to sound
- detectionAct of finding something
- trackingMonitoring location over time
- sonobuoyDisposable oceanic acoustic monitor
antisubmarine · warfare · naval · military · reconnaissance · surveillance · intercept · passive
Huge sea mammal
- dolphinEcholocating marine mammal
- cetaceanAquatic mammal order
- marine mammalWarm-blooded ocean dweller
- fishGilled aquatic vertebrate
shrimp · echolocation · vocalization · song · call · click · chorus · migration
Scientific study of seas
- seismologyStudy of ground tremors
- geophysicsPhysics of planetary structure
- dataFacts for analysis
- measurementDetermining size or amount
survey · expedition · scientific · instrument · station · network · analysis · earthquake
transducer
Energy form converter
- piezoelectricCharge from deformation
- ceramicFired clay material
- sensorInput-detecting device
microphone · preamplifier · amplifier · diaphragm · impedance · voltage · conversion · signal · output · input
sonar
Underwater detection by echoes
soundwave · decibel · hertz · amplitude · waveform · resonance · detection · propagation · reflection · signal
underwater
Below the surface
depths · seabed · oceanography · aquatic · submersible · diving · pressure · salinity · thermocline · currents
monitoring
Ongoing observation of something
sonobuoy · antisubmarine · warfare · naval · military · reconnaissance · surveillance · intercept · passive · active
whale
Huge sea mammal
- dolphinEcholocating marine mammal
- cetaceanAquatic mammal order
- marine mammalWarm-blooded ocean dweller
fish · shrimp · echolocation · vocalization · song · call · click · chorus · migration · tracking
oceanography
Scientific study of seas
- seismologyStudy of ground tremors
- geophysicsPhysics of planetary structure
- dataFacts for analysis
measurement · survey · expedition · scientific · instrument · station · network · analysis · earthquake · volcanic
- audio equipmentspeakers, microphone, headphones, amplifier, amplifiers
- audio devicesmicrophone, mic, CD player, iPod, stereo
- submarinessub, subs, torpedo, submarines, hull
- field gearbinoculars, camera trap, canteen, field journal, compass
- microphonescondenser mic, dynamic mic, lavalier mic, shotgun mic, handheld mic
- Military Sensorssensor, early warning radar, infrared sensor, thermal imager, night vision