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M7.0 earthquake, Japan, 1971-08-02

MagnitudeM7.0mw

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Depth50 km

Time (UTC)1971-08-02 07:24

Rank in 197111 / 143among M6+

Rank since 19001385 / 14,458

Energy vs an M6×33approx.

90 km SSE of Honchō, Japan · 41.41, 143.43

M6.5+ within 300 km (largest first)

1933 M8.4M8.4

1968 M8.2M8.2

2003 M8.2M8.2

1952 M8.1M8.1

1960 M8.0M8.0

1931 M7.9M7.9

1968 M7.9M7.9

1994 M7.8M7.8

1919 M7.7M7.7

1973 M7.7M7.7

1993 M7.6M7.6

2025 M7.6M7.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.5 1970-12-06	1970-12-06 20:20	40 km	64 km SSE of Hiroo, Japan
M6.0 1970-05-27	1970-05-27 23:56	33 km	109 km E of Noda, Japan
M6.2 1970-05-27	1970-05-27 22:35	27 km	115 km E of Noda, Japan
M6.5 1970-01-20	1970-01-20 17:33	34 km	16 km SSW of Sarabetsu, Japan
M6.2 1969-07-12	1969-07-12 19:16	23 km	157 km E of Miyako, Japan
M6.1 1969-04-22	1969-04-22 08:11	36 km	117 km ENE of Miyako, Japan
M6.1 1969-04-15	1969-04-15 17:30	23 km	147 km E of Miyako, Japan
M6.2 1968-11-13	1968-11-13 18:41	49 km	74 km E of Noda, Japan
M6.5 1968-10-07	1968-10-07 20:49	50 km	20 km S of Urakawa, Japan
M6.1 1968-09-24	1968-09-24 03:34	22 km	167 km E of Noda, 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.