Page 34: of Marine Technology Magazine (November 2019)

ADCPs & DVLs

Photo: Hydroid

ADCPs & DVLs

Advancing ADCPs & Disrupting DVLs, Recent Technical Developments

By Justin Manley ll seagoers know the ocean through the water, is a key aspect of You hear the Doppler effect in action moves. Some thrive on rid- many ocean technologies and applica- when a police car siren speeds past with ing the wind and waves tions. It is possible to use a principle of a characteristic increasing intensity of

Awhile some hang on and sound waves called the Doppler effect to sound that fades when the car passes. look for a rail downwind with a bit of measure motion in water. A sound wave The Doppler effect enables a key green in their face. But measuring the has a higher frequency, or pitch, when it ocean instrument known as an acoustic movement of the water, or of objects moves to you than when it moves away. Doppler current pro? ler (ADCP). This

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