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takyon writes:

http://www.bbc.com/news/science-environment-37177575

Seismologists in Japan have tracked, for the first time, a particular type of tiny vibration that wobbled through the Earth from the Atlantic seafloor. It was started by a "weather bomb": the same low-pressure storm, off Greenland, which made UK headlines in late 2014.

Tiny tremors, of two types, constantly criss-cross the deep Earth from storms. The slowest of these, the "S" wave, has never been traced to its source before and researchers say it opens up a new way to study the Earth's hidden depths. The findings appear in the journal Science [DOI: 10.1126/science.aaf7573] [DX].

According to Wikipedia, "weather bomb" is more formally known as explosive cyclogenesis:

Explosive cyclogenesis refers in a strict sense to a rapidly deepening extratropical cyclonic low-pressure area. To enter this category, the central pressure of a depression at 60˚ latitude is required to decrease by 24 mb (hPa) or more in 24 hours.

This is a predominantly maritime, cold-season (winter) event, but also occurs in continental settings. They are the extra-tropical equivalent of the tropical rapid deepening.

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