The Pacific Ocean, seen here from the International Space Station, hosts wave-generating storms that appear to indirectly cause infragravity waves, the hypothesized source for the secondary microseism, or Earth’s hum, according to Maurya et al. (2019). Credit: NASA, Public Domain
The hum of the earth
By Alka Tripathy-Lang and Wendy Bohon
July 5, 2019
Hidden amidst the tumult of seismic data generated by earthquakes, explosions and other earth-shaking phenomena is a quiet hum. Discovered relatively recently, this hum is Earth’s background noise, and it originates within the oceans.
To continue reading head over to the IRIS website.