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M7.1 earthquake, east of the South Sandwich Islands, 1977-08-26

MagnitudeM7.1ms

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Depth33 km

Time (UTC)1977-08-26 19:50

Rank in 197710 / 85among M6+

Rank since 19001145 / 14,458

Energy vs an M6×45approx.

east of the South Sandwich Islands · -59.43, -20.51

M6.5+ within 300 km (largest first)

2021 M8.1M8.1

2006 M7.4M7.4

2013 M7.3M7.3

1910 M7.2M7.2

2021 M7.1M7.1

1977 M7.1M7.1

1973 M7.0M7.0

2008 M7.0M7.0

1926 M7.0M7.0

2021 M6.9M6.9

2008 M6.8M6.8

1967 M6.7M6.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.3 1977-02-10	1977-02-10 22:41	33 km	South Sandwich Islands region
M7.0 1973-10-06	1973-10-06 15:07	33 km	east of the South Sandwich Islands
M6.0 1969-11-26	1969-11-26 18:26	20 km	South Sandwich Islands region
M6.1 1969-10-01	1969-10-01 19:53	10 km	east of the South Sandwich Islands
M6.0 1967-10-20	1967-10-20 01:02	30 km	South Sandwich Islands region
M6.3 1967-09-19	1967-09-19 12:45	10 km	South Sandwich Islands region
M6.7 1967-08-22	1967-08-22 13:02	18 km	South Sandwich Islands region
M6.0 1963-10-03	1963-10-03 15:48	35 km	South Sandwich Islands region
M6.1 1961-09-27	1961-09-27 12:07	10 km	South Sandwich Islands region
M6.5 1959-02-15	1959-02-15 03:59	25 km	South Sandwich Islands region

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.