M 5.4 earthquake: South Atlantic Ocean (South Georgia and the Islands) — December 22, 1975

M 5.4 earthquake: South Atlantic Ocean (South Georgia and the Islands) — December 22, 1975. Epicenter 779 km SE of Grytviken, depth 103 km, 04:42 Local (1975-12-22 06:42 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Atlantic Ocean (779 km SE, South Georgia and the Islands) — -57.9, -25.736

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