M 4.7 earthquake: South Atlantic Ocean (South Georgia and the Islands) — March 22, 1975

M 4.7 earthquake: South Atlantic Ocean (South Georgia and the Islands) — March 22, 1975. Epicenter 556 km E of Grytviken, depth 33 km, 04:28 Local (1975-03-22 06:28 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Atlantic Ocean (556 km E, South Georgia and the Islands) — -55.507, -28.077

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