Finwhale songs contain signals that are reflected and refracted within the earth's crust.
If these signals
The authors of the work studied earthquakes usinga set of 54 seismometers that were located on the ocean floor, along a fault, on the Oregon coast. They noted strong signals on the seismometers that correlated with the presence of whales in the area.
The cries of whales reverberate off the surface of the ocean floor.Some of the energy from these sounds is transmitted through the earth in the form of a seismic wave. This wave then passes through the oceanic crust, where it is reflected and refracted under the ocean sediment.
If these waves are recorded on a seismometer,they can provide information about the structure of the Earth's crust. Using a series of whale songs that were recorded by three seismometers, the researchers were able to pinpoint the whale's location and use the vibrations from the songs to create images of the layers of the Earth's crust.
In particular, it was necessary in order to learn more about the physics of earthquakes in the region: about the behavior of sedimentary rocks and their relationship with thickness and speed.
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