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M7.2 earthquake, Japan, 1915-02-28

MagnitudeM7.2mw

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Depth20 km

Time (UTC)1915-02-28 18:59

Rank in 19158 / 71among M6+

Rank since 1900851 / 14,458

Energy vs an M6×65approx.

98 km SSW of Ishigaki, Japan · 23.58, 123.67

M6.5+ within 300 km (largest first)

1920 M8.2M8.2

1910 M8.1M8.1

1951 M7.8M7.8

1999 M7.7M7.7

1922 M7.7M7.7

1938 M7.7M7.7

1966 M7.5M7.5

1998 M7.5M7.5

1951 M7.5M7.5

1919 M7.4M7.4

1978 M7.4M7.4

1986 M7.4M7.4

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M7.3 1915-01-05	1915-01-05 23:26	215 km	92 km NNW of Yonakuni, Japan
M6.3 1914-07-06	1914-07-06 06:37	15 km	21 km SSE of Hsinchu, Taiwan
M6.3 1913-12-15	1913-12-15 17:43	15 km	110 km S of Yonakuni, Japan
M6.4 1913-05-29	1913-05-29 13:29	35 km	16 km SSW of Yonakuni, Japan
M6.3 1913-04-14	1913-04-14 07:48	15 km	50 km ESE of Hualien City, Taiwan
M6.2 1913-01-08	1913-01-08 19:16	15 km	66 km ENE of Donggang, Taiwan
M6.7 1913-01-07	1913-01-07 22:51	35 km	68 km SW of Yonakuni, Japan
M6.6 1912-12-24	1912-12-24 18:07	35 km	40 km ESE of Yonakuni, Japan
M6.3 1912-11-03	1912-11-03 06:04	25 km	28 km E of Lugu, Taiwan
M6.1 1911-03-24	1911-03-24 03:18	15 km	23 km ENE of Puli, Taiwan

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.