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M8.1 earthquake, 1971 Bougainville Earthquake, 1971-07-26

MagnitudeM8.1mw

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Depth52 km

Time (UTC)1971-07-26 01:23

Rank in 19711 / 143among M6+

Rank since 190067 / 14,458

Energy vs an M6×1,413approx.

1971 Bougainville Earthquake · -4.87, 153.18

M6.5+ within 300 km (largest first)

1919 M8.2M8.2

1971 M8.1M8.1

1971 M8.0M8.0

2000 M8.0M8.0

1916 M8.0M8.0

1975 M7.9M7.9

2017 M7.9M7.9

2016 M7.9M7.9

1920 M7.8M7.8

2000 M7.8M7.8

1995 M7.7M7.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.3 1971-07-19	1971-07-19 15:37	10 km	53 km E of Kimbe, Papua New Guinea
M6.9 1971-07-19	1971-07-19 00:14	30 km	190 km WNW of Panguna, Papua New Guinea
M6.5 1971-07-18	1971-07-18 14:31	43 km	129 km ESE of Kokopo, Papua New Guinea
M6.5 1971-07-14	1971-07-14 18:27	25 km	143 km SE of Kokopo, Papua New Guinea
M6.1 1971-07-14	1971-07-14 17:38	18 km	137 km SE of Kokopo, Papua New Guinea
M6.0 1971-07-14	1971-07-14 07:41	40 km	190 km WNW of Panguna, Papua New Guinea
M8.0 1971-07-14	1971-07-14 06:11	15 km	1971 New Britain Earthquake
M6.6 1970-12-28	1970-12-28 20:03	62 km	174 km ESE of Kokopo, Papua New Guinea
M6.1 1970-10-02	1970-10-02 06:15	41 km	77 km SW of Panguna, Papua New Guinea
M6.1 1970-09-23	1970-09-23 23:12	48 km	86 km WSW of Panguna, Papua New Guinea

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.