The temperature measured by the sound of the world's oceans

Of course, the method of simultaneously measure the temperature of each ocean-separated continents, no, but to get an average temperature of the water is possible. All that is needed - the right sound. This method is called acoustic thermometry.

Because water is denser than air, under water sound travels faster, with lower frequency of the sound, the sound is easier to spread. Whales, for example, constantly using the sound of a frequency below 100 cycles per second, to communicate with each other many kilometers.

The same make and scientists. On one continent station emits a low specific sound, and the station on another continent takes him. The receiving station knows when the originating station "let go" sound, and calculates the time it takes the sound out to get the distance between them. The faster the sound is coming - the higher the temperature of the ocean water.

Of course, there may be an error, for example, the speed of sound Vliet change in salinity. However, the signals between the stations and then repeated, and thus manage to get a more or less accurate result.

via factroom.ru