Strong mag. 6.5 earthquake - South Sandwich Islands Region on Tuesday, 18 January 1983 at 15:23 (GMT)

Strong magnitude 6.5 earthquake at 56 km depth
Magnitude: 6.5
Depth: 56.0 km
Epicenter latitude / longitude: 57.966°S / 24.311°W

Nearest volcano: Michael (128 km / 80 mi)
Nearby towns and cities:
129 km (80 mi) ENE of Montagu Island --> See nearby quakes!
240 km (149 mi) NE of Thule Island --> See nearby quakes!
270 km (168 mi) SE of Zavodovski Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 atomic bombs!) More info
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 6.5 | 56 km | South Sandwich Islands region | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
be the first to report it!
There are no user reports for this quake yet. If you felt it Aftershocks of the 6.5 quake South Sandwich Islands Region 18 January 1983 15:23 GMT
More info
Recorded aftershocks, latest first (11 quakes):- 05 Jul 1983 16:37 UTC| M 5.7 |33 km (20.5 mi) depth|78 km (48 mi) distance| USGS | Details
- 01 Jul 1983 11:57 UTC| M 5.6 |32.4 km (20.1 mi) depth|63 km (39 mi) distance| USGS | Details
- 29 Apr 1983 00:25 UTC| M 5.0 |33 km (20.5 mi) depth|97 km (60 mi) distance| USGS | Details
- 29 Jan 1983 15:29 UTC| M 5.5 |42 km (26.1 mi) depth|21 km (13 mi) distance| USGS | Details
- 26 Jan 1983 00:48 UTC| M 4.5 |30 km (18.6 mi) depth|32 km (20 mi) distance| USGS | Details
- 23 Jan 1983 00:23 UTC| M 4.9 |33 km (20.5 mi) depth|35 km (22 mi) distance| USGS | Details
- 21 Jan 1983 03:42 UTC| M 4.6 |50 km (31.1 mi) depth|92 km (57 mi) distance| USGS | Details
- 21 Jan 1983 00:41 UTC| M 4.9 |50 km (31.1 mi) depth|46 km (29 mi) distance| USGS | Details
- 21 Jan 1983 00:41 UTC| M 4.6 |50 km (31.1 mi) depth|23 km (15 mi) distance| USGS | Details
- 18 Jan 1983 21:22 UTC| M 4.9 |33 km (20.5 mi) depth|17 km (10 mi) distance| USGS | Details
- 18 Jan 1983 15:59 UTC| M 4.7 |33 km (20.5 mi) depth|15 km (9 mi) distance| USGS | Details
Earlier earthquakes in the same area
Strong mag. 6.5 earthquake - South Sandwich Islands Region on Tuesday, 18 January 1983 at 15:23 (GMT)Click here to search our database for earlier earthquakes in the same area since 1900!