Japan scientists detect deep-Earth tremor
 

MIAMI: Scientists who study earthquakes in Japan said on Thursday they have detected a rare deep-Earth tremor for the first time and traced its location to a distant and powerful storm.

The findings, published in the US journal Science, could help experts learn more about the Earth’s inner structure and improve detection of earthquakes and oceanic storms.

The storm in the **rth Atlantic was k**wn as a "weather bomb," a small but potent storm that gains punch as pressure quickly mounts.

Groups of waves sloshed and pounded the ocean floor during the storm, which struck between Greenland and Iceland.

Using seismic equipment on land and on the seafloor that usually detects the Earth’s crust crumbling during earthquakes, researchers found something they had **t detected before -- a tremor k**wn as an S wave microseism.

Microseisms are very faint tremors.

A**ther kind of tremor, k**wn as P waves, or primary wave microseisms, can be detected during major hurricanes. P waves are fast-moving, and animals can often sense them just before an earthquake hits.



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