M 4.6 earthquake: North Pacific Ocean (Japan) — September 23, 1974

M 4.6 earthquake: North Pacific Ocean (Japan) — September 23, 1974. Epicenter 818 km SE of Shizuoka, depth 33 km, 11:01 Local (1974-09-23 02:01 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (818 km SE, Japan) — 28.447, 142.36

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