M 4.9 earthquake: South Atlantic Ocean (South Georgia and the Islands) — January 20, 1983

M 4.9 earthquake: South Atlantic Ocean (South Georgia and the Islands) — January 20, 1983. Epicenter 838 km SE of Grytviken, depth 50 km, 22:41 Local (1983-01-21 00:41 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Atlantic Ocean (838 km SE, South Georgia and the Islands) — -57.552, -24.358

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