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Moderate mag. 5.1 earthquake - 35 km north of Bandar Abbas, Hormozgan, Iran, on Monday, 21 March 1977 at 21:33 (GMT)
Moderate magnitude 5.1 earthquake at 33 km depth
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Date & time: 21 Mar 1977 21:33:18 UTC
Magnitude: 5.1Depth: 33.0 km
Epicenter latitude / longitude: 27.498°N / 56.357°E
(
Hormozgan,
Iran)
Nearest volcano:
Qal'eh Hasan Ali (243 km / 151 mi)
Nearby towns and cities:35 km (22 mi) NNE of Bandar Abbas (pop: 352,200) -->
See nearby quakes!62 km (38 mi) N of Qeshm (pop: 25,000) -->
See nearby quakes!83 km (52 mi) WNW of Mīnāb (pop: 70,800) -->
See nearby quakes!180 km (112 mi) NE of Bandar-e Lengeh (pop: 22,800) -->
See nearby quakes!227 km (141 mi) SSE of Sīrjān (Kerman) (pop: 207,600) -->
See nearby quakes!265 km (165 mi) SW of Bam (Kerman) (pop: 99,300) -->
See nearby quakes!318 km (197 mi) SSW of Kerman (pop: 577,500) -->
See nearby quakes!391 km (243 mi) NNE of Abu Dhabi (United Arab Emirates) (pop: 603,500) -->
See nearby quakes!441 km (274 mi) ESE of Shiraz (Fars) (pop: 1,249,900) -->
See nearby quakes!481 km (299 mi) NNW of Muscat (Oman) (pop: 797,000) -->
See nearby quakes!Primary data source:
USGS (United States Geological Survey)
Estimated released energy: 2.8 x 10
12 joules (783 megawatt hours, equivalent to 674 tons of TNT)
More info[show map]
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Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
| Magnitude | Depth | Location | Source |
| M 5.1 | 33 km | southern Iran | USGS |
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.
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Aftershocks
More info
Based on its magnitude, the fault that was active during the quake ruptured along a surface of approx. 13 km
2 (=5 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 6 km (4 mi).
Aftershocks typically occur during the days and weeks following the quake at or near the same fault, at distances of up to approx. two times the length of the rupture zone.
The often broadly linear arrangement of aftershock epicenters encompasses the rupture zone of the main shock (check on the
map below to verify).
30 Apr 1977 14:35 UTC
| M 5.0 | 38 km (23.6 mi) depth
| 18 km (11 mi) distance
| USGS | Details17 Apr 1977 17:15 UTC
| M 4.2 | 60 km (37.3 mi) depth
| 14 km (8 mi) distance
| USGS | Details11 Apr 1977 03:10 UTC
| M 4.8 | 33 km (20.5 mi) depth
| 15 km (10 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details10 Apr 1977 05:02 UTC
| M 4.5 | 33 km (20.5 mi) depth
| 20 km (13 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details08 Apr 1977 16:49 UTC
| M 4.7 | 22 km (13.7 mi) depth
| 8 km (5 mi) distance
| USGS | Details01 Apr 1977 16:00 UTC
| M 4.9 | 33 km (20.5 mi) depth
| 15 km (9 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details01 Apr 1977 13:36 UTC
| M 6.2 | 29 km (18 mi) depth
| 6 km (4 mi) distance
| USGS | Very strong mag. 6.2 earthquake - 40 km north of Bandar Abbas, Hormozgan, Iran, on Friday, 1 April 1977 at 13:36 (GMT)01 Apr 1977 06:59 UTC
| M 4.8 | 12 km (7.5 mi) depth
| 21 km (13 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details31 Mar 1977 19:11 UTC
| M 4.7 | 52 km (32.3 mi) depth
| 12 km (7 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | DetailsShow all
30 Mar 1977 08:29 UTC
| M 4.4 | 43 km (26.7 mi) depth
| 17 km (11 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details29 Mar 1977 23:25 UTC
| M 4.6 | 54 km (33.6 mi) depth
| 15 km (9 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details29 Mar 1977 22:29 UTC
| M 5.2 | 35 km (21.7 mi) depth
| 12 km (7 mi) distance
| USGS | Details26 Mar 1977 14:27 UTC
| M 4.9 | 34 km (21.1 mi) depth
| 20 km (12 mi) distance
| USGS | Details24 Mar 1977 00:13 UTC
| M 5.1 | 45 km (28 mi) depth
| 13 km (8 mi) distance
| USGS | Details23 Mar 1977 20:40 UTC
| M 4.9 | 42 km (26.1 mi) depth
| 12 km (8 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details23 Mar 1977 07:46 UTC
| M 5.5 | 54 km (33.6 mi) depth
| 19 km (12 mi) distance
| USGS | Details23 Mar 1977 02:31 UTC
| M 4.9 | 55 km (34.2 mi) depth
| 21 km (13 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details23 Mar 1977 00:17 UTC
| M 4.9 | 33 km (20.5 mi) depth
| 7 km (4 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details22 Mar 1977 16:37 UTC
| M 4.5 | 63 km (39.1 mi) depth
| 20 km (12 mi) distance
| USGS | Details22 Mar 1977 11:57 UTC
| M 5.9 | 39 km (24.2 mi) depth
| 14 km (9 mi) distance
| USGS | Details22 Mar 1977 03:18 UTC
| M 4.4 | 33 km (20.5 mi) depth
| 12 km (7 mi) distance
| USGS | Details22 Mar 1977 02:25 UTC
| M 5.2 | 43 km (26.7 mi) depth
| 5 km (3 mi) distance
| USGS | Details22 Mar 1977 01:37 UTC
| M 4.7 | 56 km (34.8 mi) depth
| 11 km (7 mi) distance
| USGS | Details22 Mar 1977 01:28 UTC
| M 4.7 | 33 km (20.5 mi) depth
| 16 km (10 mi) distance
| USGS | Details21 Mar 1977 23:56 UTC
| M 4.9 | 40 km (24.9 mi) depth
| 15 km (10 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details21 Mar 1977 22:42 UTC
| M 5.8 | 36 km (22.4 mi) depth
| 20 km (12 mi) distance
| USGS | Details21 Mar 1977 22:27 UTC
| M 4.4 | 33 km (20.5 mi) depth
| 17 km (11 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details21 Mar 1977 21:51 UTC
| M 4.9 | 33 km (20.5 mi) depth
| 14 km (8 mi) distance
| USGS | Details01 Jan 1970 00:00 UTC
| M | 0 km (0 mi) depth
| 6736 km (4186 mi) distance
| | Details
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