M 4.6 earthquake: Indian Ocean (Antarctica) — July 23, 1974

M 4.6 earthquake: Indian Ocean (Antarctica) — July 23, 1974. Epicenter 1900 km NW of Showa Station, depth 33 km, 22:04 Local (1974-07-23 20:04 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Indian Ocean (1900 km NW, Antarctica) — -53.16, 26.139

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