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Questions and Answers
Which acronym does SONAR stand for?
Which acronym does SONAR stand for?
- Systematic Navigation and Ranging
- Sound Navigation and Ranging (correct)
- Systematic Observation and Ranging
- Sound Observation and Ranging
Who discovered the technique of echo sounding?
Who discovered the technique of echo sounding?
- Titanic
- German physicist
- Alexander Behm (correct)
- Fish biomass
What is the purpose of an echo sounder?
What is the purpose of an echo sounder?
- To detect icebergs
- To monitor fish passage at hydropower dams
- To determine the depth of water (correct)
- To measure fish biomass
When was echo sounding patented?
When was echo sounding patented?
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What is the equation to calculate velocity?
What is the equation to calculate velocity?
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Study Notes
SONAR
- Stands for SOund NAvigation and Ranging
- A technique that uses sound waves to navigate, communicate, and detect objects underwater.
History of Echo Sounding
- Discovered by Lewis Fry Richardson around 1912
- He was a British physicist who had specialized in meteorology, but he had a fascination with sound.
Purpose of Echo Sounding
- Measures the depth of water
- This is done by emitting sound waves and measuring the time it takes for the echo to return
- This information is then used to create a map of the seabed
- Used in a variety of applications including:
- Navigation
- Fishing
- Oceanographic research
- Submarine detection
- Construction
Patent
- Patented in 1913 by Herbert Grove Dorsey
- He was an American engineer.
Calculating Velocity
- Velocity is the speed of sound in water
- Equation:
- Velocity = Distance / Time
- Distance: The distance traveled by the sound wave to the seabed and back
- Time: The time it takes for the sound wave to travel to the seabed and return
- Velocity = Distance / Time
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Description
Test your knowledge about echo sounders and their history in this quiz. Learn about how echo sounders work and their significance in determining water depth.
