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M8.0 earthquake, Japan, 1923-09-01

MagnitudeM8.0mw

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Depth15 km

Time (UTC)1923-09-01 02:58

Rank in 19232 / 93among M6+

Rank since 1900104 / 14,458

Energy vs an M6×871approx.

5 km SSE of ?iso, Japan · 35.27, 139.34

M6.5+ within 300 km (largest first)

1923 M8.0M8.0

1953 M7.9M7.9

2011 M7.9M7.9

1923 M7.8M7.8

1938 M7.7M7.7

1906 M7.4M7.4

1972 M7.3M7.3

1906 M7.3M7.3

1923 M7.2M7.2

1905 M7.2M7.2

1984 M7.2M7.2

1961 M7.2M7.2

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.7 1923-06-01	1923-06-01 20:15	35 km	60 km ENE of Hasaki, Japan
M7.2 1923-06-01	1923-06-01 17:24	15 km	64 km ENE of Hasaki, Japan
M6.3 1922-04-26	1922-04-26 01:11	35 km	9 km W of Kawasaki, Japan
M6.4 1921-12-08	1921-12-08 12:31	60 km	6 km NNW of Narita, Japan
M6.0 1921-08-22	1921-08-22 04:05	35 km	1 km NW of Asaka, Japan
M6.5 1919-08-03	1919-08-03 18:08	15 km	101 km SE of Hasaki, Japan
M6.1 1918-11-11	1918-11-11 07:03	15 km	14 km WSW of Matsumoto, Japan
M6.2 1918-07-25	1918-07-25 20:50	15 km	126 km E of Hasaki, Japan
M6.1 1917-07-18	1917-07-18 07:50	15 km	181 km ESE of Shinmachi, Japan
M6.7 1916-09-15	1916-09-15 07:01	35 km	136 km SSE of Katsuura, Japan

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.