M 4.5 earthquake: North Atlantic Ocean (Greenland) — October 23, 1977

M 4.5 earthquake: North Atlantic Ocean (Greenland) — October 23, 1977. Epicenter 1270 km SE of Qaqortoq, depth 33 km, 17:26 Local (1977-10-23 19:26 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (1270 km SE, Greenland) — 52.717, -31.08

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