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Strong mag. 5.4 earthquake - Norwegian Sea on Sunday, 25 February 2007 at 21:53 (GMT)
Strong magnitude 5.4 earthquake at 10 km depth
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Date & time: 25 Feb 2007 21:53:13 UTC
Magnitude: 5.4Depth: 10.0 km
Epicenter latitude / longitude: 73.196°N / 6.781°E
(international territory)
Nearby towns and cities:561 km (348 mi) NW of Gryllefjord (Norway) (pop: 439) -->
See nearby quakes!570 km (354 mi) NW of Ersfjord (Norway) (pop: 306) -->
See nearby quakes!583 km (362 mi) NW of Tromsø (Norway) (pop: 52,400) -->
See nearby quakes!622 km (386 mi) NW of Lyngseidet (Norway) (pop: 821) -->
See nearby quakes!624 km (388 mi) NW of Storsteinnes (Norway) (pop: 890) -->
See nearby quakes!Primary data source:
USGS (United States Geological Survey)
Estimated released energy: 7.9 x 10
12 joules (2.21 gigawatt hours, equivalent to 1898 tons of TNT or 0.1 atomic bombs!)
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 5.4 | 10 km | Greenland Sea | 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. 25 km
2 (=10 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 9 km (5 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).
26 Feb 2007 01:14 UTC
| M 3.8 | 10 km (6.2 mi) depth
| 15 km (9 mi) distance
| USGS | Details25 Feb 2007 23:30 UTC
| M 4.7 | 10 km (6.2 mi) depth
| 8 km (5 mi) distance
| USGS | Details25 Feb 2007 23:12 UTC
| M 4.9 | 10 km (6.2 mi) depth
| 7 km (4 mi) distance
| USGS | Details25 Feb 2007 21:58 UTC
| M 4.0 | 10 km (6.2 mi) depth
| 0 km (0 mi) distance
| USGS | Details25 Feb 2007 21:55 UTC
| M 4.5 | 10 km (6.2 mi) depth
| 13 km (8 mi) distance
| USGS | Details
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