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M7.5 earthquake, Japan, 1940-08-01

MagnitudeM7.5mw

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Depth15 km

Time (UTC)1940-08-01 15:08

Rank in 19405 / 105among M6+

Rank since 1900443 / 14,458

Energy vs an M6×178approx.

137 km WSW of Rishiri Town, Japan · 44.56, 139.68

M6.5+ within 300 km (largest first)

1993 M7.7M7.7

1940 M7.5M7.5

1905 M7.3M7.3

1971 M7.3M7.3

1947 M7.1M7.1

1911 M7.0M7.0

1969 M7.0M7.0

1913 M6.8M6.8

1971 M6.8M6.8

1987 M6.8M6.8

2003 M6.8M6.8

2018 M6.6M6.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1926-02-04	1926-02-04 06:44	15 km	70 km WSW of Niseko Town, Japan
M6.8 1913-02-20	1913-02-20 08:59	15 km	30 km ESE of Tomakomai, Japan
M6.2 1912-06-08	1912-06-08 04:41	15 km	25 km WSW of Muroran, Japan
M7.0 1911-09-06	1911-09-06 00:54	320 km	79 km S of Korsakov, Russia
M7.3 1905-09-01	1905-09-01 02:45	255 km	22 km ESE of Makubetsu, 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.