M 5.6 earthquake: Indian Ocean (Antarctica) — April 11, 1977

M 5.6 earthquake: Indian Ocean (Antarctica) — April 11, 1977. Epicenter 1573 km N of Casey Station, depth 33 km, 10:15 Local (1977-04-11 02:15 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

Indian Ocean (1573 km N, Antarctica) — -52.287, 114.59

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