M 4.6 Earthquake: South Atlantic Ocean (South Georgia and the Islands) — October 12, 1977

M 4.6 Earthquake: South Atlantic Ocean (South Georgia and the Islands) — October 12, 1977. Epicenter 1849 km E of Grytviken, depth 33 km, 05:36 Local (1977-10-12 06:36 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Atlantic Ocean (1849 km E, South Georgia and the Islands) — -46.461, -13.313

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