A recent study revealed that Japan has shifted eastward by about 5 to 6 millimeters due to a newly recognized seismic event. This movement occurred nearly 15 minutes after a massive 9.0 magnitude earthquake struck Japan on March 11, 2011.

Seismic Event Details

The seismic event was triggered by waves from the earthquake that traveled down to Earth’s core and then rebounded to the crust, displacing four major tectonic plates. According to University of Chicago geophysicist Sunyoung Park, the movement affected mainland Japan and did not match the timing of the initial earthquake or any significant aftershocks.

Park and her colleagues analyzed GPS and seismic data to understand the seismic event. They found that the energy released by the event was equivalent to a 7.5 magnitude earthquake, but it was distributed over a broad area, making it less damaging than a typical earthquake of that magnitude.

Implications

The discovery of this seismic event has significant implications for our understanding of seismic activity and its potential impact on the Earth’s surface. It highlights the complexity of seismic phenomena and the need for continued research and monitoring.

Original reporting: KRDO (Colorado Springs metro) — read the source article.