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Japan Earthquake | Open Access Journals
International Journal of Public Health and Safety

International Journal of Public Health and Safety

ISSN: 2736-6189

Open Access

Japan Earthquake

Japan was originally attached to the eastern coast of the Eurasian continent. The subducting plates, being deeper than the Eurasian plate, pulled Japan eastward, opening the ocean of Japan around 15 million years ago. The Strait of Tartary and therefore the Korean Strait opened much later. Today the japanese archipelago is taken into account a mature island arc and is that the results of several generations of subducting plates. Approximately 15,000 km of oceanic floor has passed under the japanese area within the last 450 million years, with most being fully subducted. In Japan, the shindo scale is usually wont to measure earthquakes by seismic intensity rather than magnitude.

Unlike other seismic intensity scales, which normally have twelve levels of intensity, shindo, seismic intensity, literally "degree of shaking") as employed by the Japan Meteorological Agency may be a unit with ten levels, starting from shindo zero, a really light tremor, to shindo seven, a severe earthquake. Intermediate levels for earthquakes with shindo five and 6 are "weak" or "strong", consistent with the degree of destruction they cause.

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