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M7.1 earthquake, Japan, 1947-11-04

MagnitudeM7.1mw

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Depth15 km

Time (UTC)1947-11-04 00:09

Rank in 194711 / 83among M6+

Rank since 19001115 / 14,458

Energy vs an M6×45approx.

72 km W of Rumoi, Japan · 43.99, 140.74

M6.5+ within 300 km (largest first)

1993 M7.7M7.7

1993 M7.6M7.6

1940 M7.5M7.5

1905 M7.3M7.3

1971 M7.3M7.3

1962 M7.1M7.1

1947 M7.1M7.1

1911 M7.0M7.0

1969 M7.0M7.0

2013 M6.9M6.9

1913 M6.8M6.8

1968 M6.8M6.8

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1945-04-10	1945-04-10 01:22	35 km	71 km SE of Shizunai-furukawach?, Japan
M6.4 1944-02-01	1944-02-01 05:16	55 km	43 km SSE of Shizunai-furukawach?, Japan
M7.5 1940-08-01	1940-08-01 15:08	15 km	137 km WSW of Rishiri Town, Japan
M6.2 1936-06-03	1936-06-03 02:55	35 km	74 km S of Shizunai-furukawach?, Japan
M6.1 1935-09-18	1935-09-18 08:23	35 km	53 km ESE of Shizunai-furukawach?, Japan
M6.3 1932-11-26	1932-11-26 04:24	58 km	8 km ENE of Shizunai-furukawach?, Japan
M6.3 1931-02-16	1931-02-16 18:48	25 km	53 km E of Shizunai-furukawach?, Japan
M6.0 1926-02-04	1926-02-04 06:44	15 km	70 km WSW of Niseko Town, Japan
M6.6 1921-03-03	1921-03-03 03:02	15 km	92 km WSW of Kamiiso, Japan
M6.8 1913-02-20	1913-02-20 08:59	15 km	30 km ESE of Tomakomai, 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.