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Sunday, August 28, 2016

'Weather Bomb' Over North Atlantic Releases Tremors Felt In Japan

Published on Aug 28, 2016

https://undergroundworldnews.com
A rare deep-Earth tremor has been detected for the first time on the ocean floor in Japan.
Using seismic equipment, researchers have managed to trace its location to a distant and powerful storm between Greenland and Iceland.
The findings could help experts learn more about the Earth's inner structure and improve the detection of earthquakes and oceanic storms.

The rare, deep-Earth tremor that shook the planet: Waves from north Atlantic 'weather bomb' are measured in Japan



http://www.dailymail.co.uk/sciencetech/article-3759740/The-rare-deep-Earth-tremor-shook-planet-Waves-north-Atlantic-weather-bomb-measured-Japan.html#ixzz4IetbAuoe
By Shivali Best For Mailonline

Published: 06:54 EST, 26 August 2016 | Updated: 00:22 EST, 27 August 2016

A rare deep-Earth tremor has been detected for the first time on the ocean floor in Japan.

Using seismic equipment, researchers have managed to trace its location to a distant and powerful storm between Greenland and Iceland.

The findings could help experts learn more about the Earth's inner structure and improve the detection of earthquakes and oceanic storms.
The storm that caused the deep-Earth tremor was a 'weather bomb' that struck over the North Atlantic.

This is a small but potent storm in which pressure quickly builds, creating a more vigorous storm.

As the storm hit, groups of waves pounded the ocean floor between Greenland and Iceland.

These subtle waves run through the Earth and can be detected in distant places.

The researchers used seismic equipment at 200 sites on both land and on the seafloor in Japan to track the tremors.

Their readings showed that they were secondary (S) wave microseisms – or very faint tremors.

Unlike primary (P) waves, which are usually detected during major hurricanes, S waves are slow, and only move through rock.


WHAT IS A WEATHER BOMB?

A 'weather bomb' is defined as an intense low pressure system with a central pressure that falls 24 millibars in a 24-hour period.

A better description can be more directly linked to the meteorological phenomena known as rapid or explosive cyclogenesis.

This is where dry air from the stratosphere flows into an area of low pressure.

This causes air within the depression to rise very quickly and increases its rotation, which in turn deepens the pressure and creates a more vigorous storm.

 Source: Met Office






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