M 5.7 earthquake: Philippine Sea (Zamboanga, Philippines) — January 1, 1972

M 5.7 earthquake: Philippine Sea (Zamboanga, Philippines) — January 1, 1972. Epicenter 160 km SE of Zamboanga, depth 625 km, 06:37 Local (1971-12-31 22:37 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Philippine Sea (160 km SE of Zamboanga, Philippines) — 6.125, 123.288

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