M 4.7 earthquake: South Atlantic Ocean (South Georgia and the Islands) — April 21, 1973

M 4.7 earthquake: South Atlantic Ocean (South Georgia and the Islands) — April 21, 1973. Epicenter 827 km SE of Grytviken, depth 95 km, 23:45 Local (1973-04-22 01:45 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Atlantic Ocean (827 km SE, South Georgia and the Islands) — -59.951, -27.604

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