M 4.6 earthquake: South Atlantic Ocean (South Georgia and the Islands) — October 2, 1977

M 4.6 earthquake: South Atlantic Ocean (South Georgia and the Islands) — October 2, 1977. Epicenter 640 km E of Grytviken, depth 33 km, 03:54 Local (1977-10-02 05:54 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Atlantic Ocean (640 km E, South Georgia and the Islands) — -55.615, -26.746

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