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M7.1 earthquake, Japan, 1913-03-23

MagnitudeM7.1mB

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Depth360 km

Time (UTC)1913-03-23 20:47

Rank in 19139 / 73among M6+

Rank since 19001100 / 14,458

Energy vs an M6×45approx.

Volcano Islands, Japan region · 22.21, 142.45

M6.5+ within 300 km (largest first)

1914 M7.9M7.9

2000 M7.6M7.6

1934 M7.5M7.5

2007 M7.5M7.5

1905 M7.2M7.2

1954 M7.2M7.2

1955 M7.2M7.2

1913 M7.1M7.1

1978 M6.8M6.8

1939 M6.6M6.6

2007 M6.6M6.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M7.2 1905-07-11	1905-07-11 15:37	200 km	Mariana Islands region

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.