M 5.5 earthquake: South Pacific Ocean (Antarctica) — April 18, 1975

M 5.5 earthquake: South Pacific Ocean (Antarctica) — April 18, 1975. Epicenter 2258 km NW of Peter I Island, depth 33 km, 22:23 Local (1975-04-19 06:23 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (2258 km NW, Antarctica) — -55.444, -124.596

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