Adventure

Tidal Forces May Predict Megaquakes

Research shows high tides trigger tremors

Researchers in Japan say that monitoring tidal forces may help predict major earthquakes like the one that triggered a massive tsunami last March. Sachiko Tanaka from the National Research Institute for Earth Science and Disaster Prevention pored over data from tides and underwater tremors recorded between 1976 and 2011 in a 100,000-kilometer-wide area surrounding the 2011 quake's epicenter. Tanaka found that minor tidal tremors peaked just before the disaster and vanished afterwards. The added pressure of high tides above highly stressed faults triggers small tremors that could signify an imminent upheaval. Tanaka observed the same effect leading to the 2004 Indonesia megaquake. She hopes to use the method to help predict future seaquakes.

Read more at New Scientist

Support Outside Online

Our mission to inspire readers to get outside has never been more critical. In recent years, Outside Online has reported on groundbreaking research linking time in nature to improved mental and physical health, and we’ve kept you informed about the unprecedented threats to America’s public lands. Our rigorous coverage helps spark important debates about wellness and travel and adventure, and it provides readers an accessible gateway to new outdoor passions. Time outside is essential—and we can help you make the most of it. Making a financial contribution to Outside Online only takes a few minutes and will ensure we can continue supplying the trailblazing, informative journalism that readers like you depend on. We hope you’ll support us. Thank you.

Contribute to Outside
Filed To: News
More Adventure