M 5.1 earthquake: North Atlantic Ocean (Portugal) — February 10, 1975

M 5.1 earthquake: North Atlantic Ocean (Portugal) — February 10, 1975. Epicenter 875 km N of Angra do Heroísmo, depth 33 km, 17:10 Local (1975-02-10 19:10 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Atlantic Ocean (875 km N, Portugal) — 46.514, -27.48

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