M 4.8 earthquake: South Pacific Ocean (Antarctica) — August 21, 1977

M 4.8 earthquake: South Pacific Ocean (Antarctica) — August 21, 1977. Epicenter 2732 km W of Peter I Island, depth 33 km, 04:36 Local (1977-08-21 13:36 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (2732 km W, Antarctica) — -55.021, -136.005

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