M 5.7 earthquake: North Pacific Ocean (Japan) — March 31, 1979

M 5.7 earthquake: North Pacific Ocean (Japan) — March 31, 1979. Epicenter 741 km S of Yokohama, depth 55 km, 22:20 Local (1979-03-31 13:20 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (741 km S, Japan) — 29.181, 142.338

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