E-Tools

Conversation: Study suggests mega quake could occur at interval shorter than 100 years NHK

A: Hey! Did you hear about that earthquake near Russia? It was pretty big, right?

B: No! Really? What happened?

A: Yeah! Japanese researchers studied it. They think huge earthquakes, like magnitude 9 ones, might happen more often than we thought!

B: Wow! Like, shorter time between them?

A: Exactly! They looked at the 2025 earthquake and compared it to one from 1952. They happened in almost the same place.

B: That’s scary! What did they find?

A: They think something called "overshoot" happened. It’s when the earthquake slips more than it should.

B: Overshoot? What does that mean?

A: It means the earthquake released strain that hadn't been released from the last big one! Like it caught up.

B: So, does this mean another big one could happen near Japan?

A: Potentially! The researchers said it could happen along the Nankai Trough and other areas.

B: Oh no! Should we be worried?

A: Professor Yagi said we shouldn't let our guard down. It could happen anytime. We need to be prepared!

B: Okay, good point. Maybe I’ll check my emergency kit. Thanks for the heads up!
Summary
Japanese researchers found a large earthquake near Russia may indicate that magnitude 9+ earthquakes could occur more frequently than previously thought. The study suggests "overshoot" – strain buildup from past events – could trigger future quakes, potentially near Japan’s Nankai Trough.
Reading History
Date Name Words Time WPM
2025/12/21 23:23 Anonymous 187 82s 136
Statistics

187

Words

1

Read Count
Details

ID: e02ab40c-d57a-4919-a26d-c7256569d141

Category ID: conversation_summary

URL: https://www3.nhk.or.jp/nhkworld/en/news/20251221_12/#conversation

Date: Dec. 21, 2025

Notes: 2025-12-21

Created: 2025/12/21 22:40

Updated: 2025/12/21 23:23

Last Read: 2025/12/21 23:23

Actions