Rare Deep-Earth Quake S Wave Microseism Detected by Japanese Scientists


Scientists of the National Research Institute for Earth Science and Disaster Prevention in Japan have detected a rare deep-Earth tremor named S (secondary) wave microseism (very faint tremors) during earthquakes study for the first time ever in history.

Rare deep-Earth quake S wave microseism detected

Rare deep-Earth quake S wave microseism detected

Rare deep-Earth quake S wave microseism detected

Key Facts

  • The rare deep-Earth tremor S location is traced for the first time to a distant and powerful storm.
  • The weather bomb North Atlantic’s storm was a small still potent storm that gains punch as pressure quickly mounts.
  • Ggroups of waves had sloshed and pounded the ocean floor between Greenland and Iceland at the time of storm.
  • Using seismic equipment on land and on the seafloor researchers found a tremor known as an S wave microseism.
  • S As compared to P (primary) wave microseisms wave Microseisms are low faint tremors and occur between 0.05 and 0.5 Hz frequency range.
  • P wave microseisms are easily detectable during major hurricanes, fast-moving waves and travel through gaseous, liquid and solid materials.
  • Whereas the elusive S waves are slower and only travel through solid rock, not liquid, Humans experience them during earthquakes.

Significance of Discovery:

  • This new Detection will be very helpful to experts learn to get more idea about the inner structure of Earth and increase detection of earthquakes and oceanic storms.
  • S waves microseismic will also help to understand the deeper crust and upper mantle structure inn future.

- Published/Last Modified on: August 22, 2016