Scientists investigate mysterious seismic waves that occurred all over the world
Scientists have been stumped by a 20-minute rumble of a mysterious seismic wave felt across the world 
http://po.st/KCP0um
The seismic waves began off the shores of a French island, buzzed across Africa, and traversed oceans to reach as far as Hawaiihttps://on.natgeo.com/2FLKC8L
The morning of November 11, strange seismic waves rippled around the world. Nobody felt them—and no one knows why. I dig into this fascinating geologic mystery in my latest for @NatGeo!https://www.nationalgeographic.com/science/2018/11/strange-earthquake-waves-rippled-around-world-earth-geology/ …
Seismic waves rippled around the entire planet for 20 minutes on Nov 11 — yet no people appear to have felt them:https://www.nationalgeographic.com/science/2018/11/strange-earthquake-waves-rippled-around-world-earth-geology/ …
Strange seismic waves were picked up circling the globe on November 11, and seismologists are now trying to figure out why. http://bit.ly/2zwMoVI #7Newspic.twitter.com/xed3f7fpj7
Q Bell Started Ringing 11.11 Strange seismic waves were picked up circling the globe on November 11. Now seismologists are trying to figure out why-NZ Herald It was as though the planet rang like a bell, maintaining a low-frequency monotone as it spreadhttps://www.nzherald.co.nz/world/news/article.cfm?c_id=2&objectid=12168640 …
The signal can be seen all around the world at this URI, but only for the day.https://earthquake.usgs.gov/monitoring/operations/heliplot.php …
and here in Wellington, New Zealand ... https://earthquake.usgs.gov/static/earthquake-network-operations/Seismic_Data/telemetry_data/SNZO_24hr.html …pic.twitter.com/VGb1oRu8pc
This is a most odd and unusual seismic signal. Recorded at Kilima Mbogo, Kenya ... #earthquake https://earthquake.usgs.gov/static/earthquake-network-operations/Seismic_Data/telemetry_data/KMBO_24hr.html …pic.twitter.com/FTSpNVTJ9B
Here is a plot of the November 11 "mystery waves" (bottom trace) recorded at Victoria, BC compared to recordings of M5 - 5.8 earthquakes (all from the Mayotte region between Africa and Madagascar). All traces are plotted at the same scale for comparison. https://www.nationalgeographic.com/science/2018/11/strange-earthquake-waves-rippled-around-world-earth-geology/ …pic.twitter.com/Ft1eKkI3zV
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