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Chorus Waves Recorded by NASA’s Van Allen Probes -

Chorus Waves Recorded by NASA’s Van Allen Probes por NASA Video   2 mess atrás

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On Oct. 26, 2012, NASA’s Van Allen Probes recorded these chorus waves in space above Earth. These waves are created by electrons spiraling along magnetic field lines around Earth. They then interact with other electrons in the region to accelerate them to higher speeds or push them into Earth’s upper atmosphere. This video shows the data from Electric and Magnetic Field Instrument Suite and Integrated Science, the instrument aboard the Van Allen Probes that recorded the sounds. A range of frequencies are shown low to high along the vertical axis and the strength of the signal at each frequency and time are color coded — blue being weak and red being strong.

Credit: University of Iowa

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