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M6.6 earthquake, western Indian-Antarctic Ridge, 1976-05-11

MagnitudeM6.6ms

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Depth33 km

Time (UTC)1976-05-11 15:50

Rank in 197627 / 109among M6+

Rank since 19003460 / 14,458

Energy vs an M6×8approx.

western Indian-Antarctic Ridge · -51.60, 139.68

M6.5+ within 300 km (largest first)

2000 M6.6M6.6

1976 M6.6M6.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.1 1976-05-11	1976-05-11 11:29	33 km	western Indian-Antarctic Ridge
M6.2 1976-04-14	1976-04-14 15:26	33 km	western Indian-Antarctic Ridge
M6.1 1975-05-30	1975-05-30 17:46	33 km	western Indian-Antarctic Ridge
M6.3 1975-04-11	1975-04-11 00:10	33 km	western Indian-Antarctic Ridge
M6.1 1970-07-02	1970-07-02 00:56	10 km	western Indian-Antarctic Ridge
M6.1 1965-02-04	1965-02-04 03:25	10 km	western Indian-Antarctic Ridge
M6.2 1964-07-28	1964-07-28 18:40	10 km	western Indian-Antarctic Ridge
M6.3 1961-12-05	1961-12-05 13:01	15 km	western Indian-Antarctic Ridge
M6.1 1959-08-21	1959-08-21 08:05	15 km	western Indian-Antarctic Ridge
M6.2 1959-08-21	1959-08-21 08:03	15 km	western Indian-Antarctic Ridge

Energy ratio uses the rule that one magnitude unit is about 32 times the energy. Magnitudes and locations are USGS values and can differ from national agencies. Older records are less complete and less precise.