Thanks for posting this, repeated Google searches resulted in absolutely useless results! Especially as all I had to search on was '26 second pulse' and 'gulf of guinea'.
Google is becoming worthless for 'serious' search queries. :(
The 28 second pulse near this island in the Gulf of Guinea has a good explanation. If you look at it, it's right at the focal point of a perfect ellipse. So the waves wreck havoc there, like a huge antenna. Should be explored by surfers. Could be better than Nazare.
But the 26 second pulse from Cameroon was the so called "footquake" from football fans stomping down.
> Euler wandered into the field of seismic noise in 2007 when he found consistent spikes in noise from one of 32 different seismic stations in Cameroon. The spikes turned out to correspond with joyous, celebratory foot-stomping of Cameroon’s avid soccer fans at various cities after goals were scored or key plays made during the African Cup of Nations games in 2006.
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[ 3.7 ms ] story [ 27.0 ms ] threadGoogle is becoming worthless for 'serious' search queries. :(
https://phys.org/news/2011-01-seismometer-noise-south-atlant...
https://www.explainxkcd.com/wiki/index.php/2344:_26-Second_P...
https://en.wikipedia.org/wiki/Null_Island
But the 26 second pulse from Cameroon was the so called "footquake" from football fans stomping down.
> Euler wandered into the field of seismic noise in 2007 when he found consistent spikes in noise from one of 32 different seismic stations in Cameroon. The spikes turned out to correspond with joyous, celebratory foot-stomping of Cameroon’s avid soccer fans at various cities after goals were scored or key plays made during the African Cup of Nations games in 2006.
https://phys.org/news/2011-01-seismometer-noise-south-atlant...