M 4.8 earthquake: South Atlantic Ocean (South Georgia and the Islands) — July 27, 1977

M 4.8 earthquake: South Atlantic Ocean (South Georgia and the Islands) — July 27, 1977. Epicenter 879 km SE of Grytviken, depth 33 km, 18:32 Local (1977-07-27 20:32 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Atlantic Ocean (879 km SE, South Georgia and the Islands) — -59.705, -25.901

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