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M7.3 earthquake, Japan, 1968-10-07

MagnitudeM7.3mw

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Depth500 km

Time (UTC)1968-10-07 19:20

Rank in 19688 / 159among M6+

Rank since 1900674 / 14,458

Energy vs an M6×92approx.

Bonin Islands, Japan region · 26.36, 140.63

M6.5+ within 300 km (largest first)

2015 M7.8M7.8

2000 M7.4M7.4

1968 M7.3M7.3

1955 M7.2M7.2

1970 M7.1M7.1

1951 M7.1M7.1

1955 M6.9M6.9

2010 M6.8M6.8

1977 M6.8M6.8

1905 M6.8M6.8

1991 M6.7M6.7

1992 M6.7M6.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.1 1960-12-13	1960-12-13 10:05	15 km	Bonin Islands, Japan region
M6.0 1958-11-04	1958-11-04 08:28	65 km	Bonin Islands, Japan region
M6.0 1958-06-17	1958-06-17 19:06	35 km	Volcano Islands, Japan region
M6.4 1956-11-29	1956-11-29 09:15	35 km	Bonin Islands, Japan region
M6.9 1955-12-07	1955-12-07 15:03	10 km	Bonin Islands, Japan region
M7.2 1955-05-30	1955-05-30 12:31	559 km	Volcano Islands, Japan region
M6.0 1955-05-21	1955-05-21 03:30	15 km	Bonin Islands, Japan region
M6.7 1955-05-14	1955-05-14 06:04	487 km	Bonin Islands, Japan region
M7.1 1951-07-11	1951-07-11 18:21	497 km	Bonin Islands, Japan region
M6.1 1940-03-15	1940-03-15 05:28	20 km	Bonin Islands, Japan 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.