Earthquakes
Technology
Ocean-Bottom Seismometer
Seismometers on the seafloor measure small movement in Earth's crust.
Source: Ocean Instruments
Autonomous Hydrophone Array (AHA)
Hydrophones “hear” and record sound waves in the ocean.
Nootka Buoy
The Nootka buoy offers scientists the equivalent of a wireless hotspot in the middle of the deep ocean. It uses acoustic telemetry to send information through the water in bursts of sound waves.