From your article:

“That’s because the pulse’s origin point is suspiciously close to a volcano on the island of São Tomé in the Bight of Bonny,” Discover explains. And there’s a similar volcanic microseism that’s already well documented in Japan.

Whoa, big mystery! It must mean some stupid woo is at work here! Yea, that's the ticket!

Also, scientists know that the universe is not fractal.