'Megaquake' explained: Japan issues warning after 7.1-magnitude earthquake
Japan Issues First-of-Its-Kind Warning for Mega Quake Following Powerful 7.1 Magnitude Earthquake
A Long-Feared Scenario Unfolds
On Thursday, Japan issued a rare warning for a long-feared mega quake, following a powerful 7.1 magnitude earthquake that rocked the country’s southern coast. The warning comes as the country remains on high alert, with residents in coastal areas urged to evacuate immediately. While injuries and damage have been minimal so far, the warning highlights the possibility of a catastrophic event that could surpass the devastating 9.1 magnitude earthquake and tsunami that struck in 2011.
The Science Behind the Warning
Researchers have long warned of the potential for a megaquake, measuring 8 or 9 magnitude, potentially even more damaging than the 2011 disaster. The recent 7.1 magnitude earthquake is believed to be a foreshock, with about 5% of earthquakes preceded by a smaller event. This phenomenon, known as a "foreshock," is often a sign of a larger event to come.
The Ring of Fire: A Region of High Seismic Activity
Japan sits on the Pacific Ring of Fire, an area of high seismic activity where tectonic plates meet, leading to frequent earthquakes and volcanic eruptions. The US’s Pacific Coast, including Southern California, is also part of this region, which experienced a 5.2 magnitude earthquake on Wednesday.
Preparing for the Unthinkable
Experts emphasize the importance of being prepared for a megaquake, which could have catastrophic consequences. Efforts are underway to prepare for the seismic hazard, ground shaking, and tsunamis that could accompany such an event. While the possibility of a megaquake may seem unthinkable, it is essential to be prepared for the worst-case scenario.
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