Moderate mag. 5.6 earthquake - South Sandwich Islands Region on Thursday, 18 December 2014
Moderate mag. 5.5 earthquake - South Sandwich Islands Region on Thursday, 18 December 2014
18 Dec 21:10 UTC: Premier à signaler: GFZ après 59 minutes.
Dec 18 22:10: Magnitude recalculée de 5.6 à 5.5.
Dec 18 22:10: Magnitude recalculée de 5.6 à 5.5.
Magnitude: 5.5
Depth: 10.0 km
Epicenter latitude / longitude: 56.65°S / 25.52°W
(Géorgie du Sud et îles Sandwich du Sud)Nearest volcano: Candlemas Island (85 km / 53 mi)
Primary data source: GFZ
Estimated released energy: 1.1 x 1013 joules (3.12 gigawatt hours, equivalent to 2682 tons of TNT or 0.2 atomic bombs!) [learn more]
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.
| Heure | Mag. / Depth | Location | Source |
| Thu, 18 Dec 20:10 UTC | M 5.5 / 10 km | South Sandwich Islands Region | GFZ |
| Thu, 18 Dec 20:10 UTC | M 5.6 / 10 km | SOUTH SANDWICH ISLANDS REGION | EMSC |
| Thu, 18 Dec 20:10 UTC | M 5.6 / 9.3 km | 109km E of Visokoi Island, | USGS |
(shakemap: USGS)
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (modified Mercalli) scale.
There are no user reports for this quake yet. If you felt it or were nearby when it occurred, be the first to report it!
Aftershocks of the 5.5 quake: South Sandwich Islands Region, 18 Dec 2014 20h10
Show info about this
List of recorded aftershocks, latest first (3 quakes):- 22 Jan 2015 11:12 UTC| M 5.0 |34 km (21.1 mi) depth|24 km (15 mi) distance| GFZ | Details
- 29 Dec 2014 17:41 UTC| M 5.8 |34 km (21.1 mi) depth|33 km (20 mi) distance| GFZ | Details
- 18 Dec 2014 20:15 UTC| M 5.2 |9 km (5.6 mi) depth|8 km (5 mi) distance| INPRES | Details
Map of aftershocks
Significant earthquakes in the same area since 1900
Moderate mag. 5.5 earthquake - South Sandwich Islands Region on Thursday, 18 December 2014
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