A monitoring system developed to listen for secret nuclear tests mostly hears other events happening all around Earth. Thanks to CTBTO for sponsoring this video: www.ctbto.org Thanks also to our supporters on ___________________________________________ FYI: We try to leave jargon out of our videos, but if you want to learn more about this topic, here are some keywords to get your googling started: Infrasound: sound waves too low in frequency for humans to hear. The CTBTO stations detect frequencies of 0.02 to 4Hz Hydroacoustic: having to do with underwater sounds. The CTBTO stations detect frequencies of 1-100 Hz Seismic: oscillation waves in the earth, often caused by earthquakes or other tectonic activity. The CTBTO stations detect frequencies of 0.02-16 Hz ___________________________________________ Credits (and Twitter handles): Script Writer: Alex Reich Script Editor: Kate Yoshida (@KateYoshida) Video Illustrator: Jesse Agar Video Director: Kate Yoshida (@KateYoshida) Video Narrator: Kate Yoshida (@KateYoshida) With Contributions From: Henry Reich, Ever Salazar, Emily Elert, Peter Reich, David Goldenberg Music by: Nathaniel Schroeder: _________________________________________ Like our videos? Subscribe to MinuteEarth on YouTube: Support us on Patreon: Also, say hello on: Facebook: Twitter: And find us on itunes: ___________________________________________ If you liked this week’s video, we think you might also like: Animals can detect infrasound: A Time-Lapse Map of Every Nuclear Explosion Since 1945: travels 1000s of miles in the ocean’s SOFAR channel: ___________________________________________ References: Sounds in the video that were recorded by CTBTO stations:0:32 Kasatoshi volcano eruption in August 2008, detected 2100km away at infrasound station on mainland Alaska. Sped up 500x 35 Explosion of Antares rocket in October 2014, detected 1100km away at Bermuda infrasound station. Sped up 150x and video: Antares_Fails_to_Reach_Orbit_with_Cygnus_CRS-3_after_Rocket_Explodes.webm 0:37 Ship engine detected June 1 2017 by hydroacoustic station. Sped up 16x0:40 Waves hitting an iceberg and causing it to vibrate like a cymbal in July 2010. Detected by hydroacoustic station off of Western Australia. Sped up 16x1:01 Whale call Feb 18 2017, detected by hydroacoustic station. Sped up 16x1:08 Chelyabinsk meteor airburst February 15 2013, detected by infrasound station 650km away in Kazakhstan. Sped up 135x1:39 Earthquake Jan 2 2017, detected by infrasound station. Sped up 16x2:00 Sound with unknown cause, detected by hydroacoustic station. March 25 2017. Sped up 16xReferencesBrown, P. G., et al. 2013. A 500-kiloton airburst over Chelyabinsk and an enhanced hazard from small impactors. Nature, 503(7475), 238-241. G. May 2017, Personal communicationHarabalus, G. May 2017, personal communicationLeBras, R. May 2017, personal communicationMialle P., May 2017, personal communicationMiksis-Old, J. May 2017, personal communicationNielsen, P., May 2017, personal communicationLe Pichon, A., et al. 2013. The 2013 Russian fireball largest ever detected by CTBTO infrasound sensors. Geophysical Research Letters, 40(14), 3732-3737.