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M7.4 earthquake, Iran, 1978-09-16

MagnitudeM7.4ms

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Depth33 km

Time (UTC)1978-09-16 15:35

Rank in 19786 / 90among M6+

Rank since 1900578 / 14,458

Energy vs an M6×126approx.

52 km ESE of Tabas, Iran · 33.39, 57.43

M6.5+ within 300 km (largest first)

1978 M7.4M7.4

1997 M7.3M7.3

1968 M7.1M7.1

1979 M7.1M7.1

1947 M6.9M6.9

1979 M6.7M6.7

1979 M6.6M6.6

1911 M6.5M6.5

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1976-11-07	1976-11-07 04:00	13 km	8 km NNW of Q?’en, Iran
M6.2 1968-09-01	1968-09-01 07:27	10 km	60 km SW of Gonābād, Iran
M7.1 1968-08-31	1968-08-31 10:47	12 km	35 km SE of Gonābād, Iran
M6.0 1947-09-26	1947-09-26 03:04	15 km	55 km WSW of Q?’en, Iran
M6.9 1947-09-23	1947-09-23 12:28	15 km	52 km WSW of Q?’en, Iran
M6.3 1941-02-16	1941-02-16 16:39	15 km	43 km WSW of Q?’en, Iran
M6.5 1940-05-04	1940-05-04 21:01	15 km	57 km SW of Neysh?b?r, Iran
M6.1 1936-06-30	1936-06-30 19:26	15 km	113 km E of Q?’en, Iran
M6.2 1933-11-28	1933-11-28 11:09	10 km	63 km ENE of B?fq, Iran
M6.1 1933-10-05	1933-10-05 13:29	15 km	58 km SSW of Bardaskan, Iran

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.