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M8.4 earthquake, Japan, 1933-03-02

MagnitudeM8.4mw

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Depth15 km

Time (UTC)1933-03-02 17:31

Rank in 19331 / 101among M6+

Rank since 190019 / 14,458

Energy vs an M6×3,981approx.

1933 Sanriku (Sanriku-oki) Earthquake, Japan · 39.21, 144.59

M6.5+ within 300 km (largest first)

2011 M9.1M9.1

1933 M8.4M8.4

1968 M8.2M8.2

2003 M8.2M8.2

1960 M8.0M8.0

1931 M7.9M7.9

1968 M7.9M7.9

1994 M7.8M7.8

1919 M7.7M7.7

1938 M7.7M7.7

1978 M7.7M7.7

2011 M7.7M7.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.6 1933-01-07	1933-01-07 04:06	15 km	184 km ENE of Miyako, Japan
M6.1 1933-01-03	1933-01-03 15:27	15 km	213 km E of Hachinohe, Japan
M6.3 1932-09-03	1932-09-03 11:58	25 km	160 km ENE of Hachinohe, Japan
M6.1 1932-07-10	1932-07-10 07:45	15 km	281 km E of Yamada, Japan
M6.0 1932-06-29	1932-06-29 18:15	35 km	178 km ENE of Miyako, Japan
M6.1 1931-11-03	1931-11-03 16:19	35 km	9 km NW of Yamada, Japan
M7.9 1931-03-09	1931-03-09 03:49	35 km	78 km E of Hachinohe, Japan
M6.4 1929-08-28	1929-08-28 18:51	15 km	172 km ENE of Miyako, Japan
M6.2 1929-03-31	1929-03-31 20:17	15 km	210 km ESE of ?funato, Japan
M6.1 1929-03-18	1929-03-18 23:20	15 km	250 km ESE of Kamaishi, 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.