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M7.7 earthquake, Vanuatu, 1997-04-21

MagnitudeM7.7mwc

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Depth33 km

Time (UTC)1997-04-21 12:02

Rank in 19973 / 136among M6+

Rank since 1900275 / 14,458

Energy vs an M6×355approx.

171 km NNW of Sola, Vanuatu · -12.58, 166.68

M6.5+ within 300 km (largest first)

2013 M8.0M8.0

1980 M7.9M7.9

1957 M7.8M7.8

1966 M7.8M7.8

2009 M7.8M7.8

1934 M7.7M7.7

1965 M7.7M7.7

2009 M7.7M7.7

1997 M7.7M7.7

1973 M7.5M7.5

1980 M7.5M7.5

1963 M7.4M7.4

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1997-01-29	1997-01-29 23:19	33 km	166 km NW of Sola, Vanuatu
M6.0 1996-11-14	1996-11-14 07:58	109 km	102 km SE of Lata, Solomon Islands
M6.4 1996-09-14	1996-09-14 13:10	73 km	27 km SE of Lata, Solomon Islands
M6.2 1996-08-15	1996-08-15 07:33	33 km	99 km NW of Sola, Vanuatu
M6.1 1996-08-11	1996-08-11 01:31	100 km	107 km WNW of Sola, Vanuatu
M6.7 1996-06-10	1996-06-10 01:04	200 km	63 km NW of Sola, Vanuatu
M6.0 1996-03-31	1996-03-31 23:41	33 km	52 km SSW of Lata, Solomon Islands
M6.7 1996-03-17	1996-03-17 14:48	164 km	44 km NNE of Port-Olry, Vanuatu
M6.2 1995-03-25	1995-03-25 22:44	79 km	46 km SE of Lata, Solomon Islands
M6.2 1994-08-22	1994-08-22 17:26	142 km	112 km SE of Lata, Solomon Islands

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.