quake-hits-japan

Japan quake may have caused plate shift

Global positioning system data indicated a seismic shift occurred from the March 11 earthquake that devastated northeastern Japan, research indicates.

The 9-magnitude earthquake that shook Japan eased strain from the Japanese trench that had accumulated over hundreds of years, said the report published Wednesday on Nature’s Web site.

The findings support the importance of GPS observations when assessing future earthquake potential, the authors said.

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