Risk of Megaquake in Japan's Nankai Trough

SOURCE www.nbcnews.com
Japan's meteorological agency warns of heightened risk of a larger earthquake following a 7.1-magnitude quake. Understanding the dynamics of subduction zone earthquakes and the potential impacts of a megaquake on the Nankai Trough.

Key Points

  • Nankai Trough is an underwater subduction zone with the potential for magnitude 8 or 9 earthquakes
  • Recent earthquake in Japan prompts warning of heightened risk
  • Japanese scientists predict a 70-80% chance of a megathrust earthquake in the next 30 years
  • Cascadia Subduction Zone off the U.S. West Coast poses similar risks

Pros

  • Increased understanding of subduction zone earthquakes
  • Forecasting enhanced risk helps in preparation

Cons

  • Potential for devastating effects on Japan's coast