This is a most odd and unusual seismic signal.
Recorded at Kilima Mbogo, Kenya ...
#earthquakehttps://earthquake.usgs.gov/static/earthquake-network-operations/Seismic_Data/telemetry_data/KMBO_24hr.htmlโฆ
First guess would be some kind of meteor air burst, possibly offshore Kenya/Tanzania in the Indian Ocean. Would be useful to see the signal in Asia if possible
The earlier signal there looks to be the M4.5 India-Nepal quake, followed by the M5.5 Indonesia quake. So that gives an idea. The signal is clearly not of a seismic origin, so it has to be something else, hence my first thought was a meteor of some kind.
Fair call.
Some kind of extraterrestrial electromagnetic shock wave may be worth thinking about, or some previously unknown to me oscillatory mechanism perhaps involving a complex electromagnetic component at great depth.
It is strange.