M 4.7 earthquake: North Pacific Ocean (Japan) — March 4, 1978

M 4.7 earthquake: North Pacific Ocean (Japan) — March 4, 1978. Epicenter 285 km SE of Yokohama, depth 42 km, 15:23 Local (1978-03-04 06:23 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (285 km SE, Japan) — 33.433, 141.546

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