Announcing the cause of Japanese 2011 earthquake super

Seismologists on January 9 claim they have found indications about why the earthquake in Japan in 2011 from a broken crack originally thought to be harmless.

The findings warn about Japan's earthquake response strategy as well as other locations, including the famous San Andreas crack in California, USA, with comparable geological records, according to scientists. learn.

Geologists Hiroyuki Noda of the Japan Institute of Geological and Marine Science and Technology Bran and Nadia Lapusta of the California Institute of Technology used computer models to analyze and publish their findings about the earthquake. March 11, 2011 led to a tsunami that left 19,000 people dead and seriously devastating a large area as well as entailing a nuclear disaster at the Fukushima Daiichi plant.

The 9.0-magnitude earthquake occurred off the coast of Northeast Japan in the area known as the Japanese Groove, where the Pacific massif subsided under the Okhotsk massif, and the Japanese peninsula was located right at junction

The epicenter of the earthquake was about 200km east of Sendai, Honshu island. Previously, the Japanese trench was thought to be relatively stable and only the 'gradual fracture' phenomenon occurred meant that the movements of the stratigraphic blocks were slow and there was not too much sudden disturbance.

According to the generally accepted seismic theory, these faults do not cause super-earthquakes, as we slowly release hot air from a steam engine. But Noda and Lapusta believe that the fracture is thought to be long and slowly before it can weaken suddenly because of a geological fluctuation nearby.

Seismologists study broken cracks to make them available
Future earthquake warnings.(Artwork: AFP)

If this fluctuation begins with the eruption of hot lava under the ocean, a large earthquake can occur."Our research shows that geological fluctuations are thought to be able to cause massive earthquakes, which are more exaggerated in intensity and destructive power," Noda said.

The authors say they hope their work will be useful for future earthquake and forecast efforts. Some experts also say that Japan's earthquake response program is currently too focused on risk for the Tokyo area, which is quite far south compared to the 2011 earthquake.

The findings also point to a risk in the San Andreas fracture off California, according to the study published in the journal Nature.