Variation of Frequency of sound underwater

In summary, the variation of frequency of sound underwater is primarily caused by changes in temperature, salinity, and pressure. As temperature increases, the speed of sound in water also increases, resulting in higher frequency sound waves. Salinity can also impact the frequency of sound, with higher salinity generally leading to higher frequency sounds. Pressure, on the other hand, can cause sound waves to become higher frequency as depth increases. This variation in frequency can be used for communication by marine animals, who have adapted to use different frequencies in different environments.
  • #1
NPB777
2
0
Hello,

I am very much interested to how frequency of sound varies in water. Also, how the frequency varies with temperature and depth? What are the different formulas related to this? Secondly, how can we determine the best frequency of operation? I would be very thankful if anyone could answer the above questions or point to materials explaining the above.

With regards
 
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  • #2
It doesn't. The frequency depends on the source that produces the sound.
Maybe you mean the speed of sound. This indeed depends on temperature of the medium.
 

What causes the variation of frequency of sound underwater?

The variation of frequency of sound underwater is primarily caused by changes in temperature, salinity, and pressure. As sound travels through water, these factors can affect the speed at which the sound waves travel, leading to changes in frequency.

How does temperature affect the frequency of sound underwater?

As temperature increases, the speed of sound in water also increases. This means that sound waves will travel faster and have a higher frequency. Conversely, as temperature decreases, the speed of sound decreases, leading to lower frequency sound waves.

What role does salinity play in the variation of frequency of sound underwater?

Salinity, or the concentration of salt in water, can also impact the frequency of sound underwater. In general, as salinity increases, the speed of sound also increases, resulting in higher frequency sound waves. However, there are some areas of the ocean with high salinity that can actually decrease the speed of sound and lower the frequency of sound waves.

How does pressure affect the frequency of sound underwater?

Pressure is another factor that can impact the speed of sound in water and subsequently, the frequency of sound waves. As depth increases, the pressure also increases, causing the speed of sound to increase and the frequency of sound waves to become higher. This is why deep-sea animals often produce very low-frequency sounds.

Can the variation of frequency of sound underwater be used for communication?

Yes, the variation of frequency of sound underwater can be used for communication, particularly for marine animals. Many species have adapted to use different frequencies for communication in different environments, such as shallow vs. deep water. This allows them to effectively communicate with each other despite variations in frequency caused by changes in temperature, salinity, and pressure.

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