M 5.5 earthquake: South Atlantic Ocean (South Georgia and the Islands) — June 29, 1978

M 5.5 earthquake: South Atlantic Ocean (South Georgia and the Islands) — June 29, 1978. Epicenter 644 km SE of Grytviken, depth 120 km, 22:54 Local (1978-06-30 00:54 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Atlantic Ocean (644 km SE, South Georgia and the Islands) — -56.47, -27.058

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