Terremoto moderato mag. 4.8 - South Atlantic Ocean, Antartide, mercoledì, 21 ottobre 2020 -
Questo terremoto era probabilmente un aftershock del M 5.2 terremoto: South Atlantic Ocean, Antartide Sun, 18 Oct 2020 00:05che si è verificato 3 giorni prima.
Terremoto moderato magnitudine 4.8 at 10 km depth
21 Oct 02:10 UTC: Primo a segnalare: GFZ dopo 10 minuti.
Data & ora: 21 Oct 2020 02:00:30 UTC -
Ora locale a epicentro: 20 Oct 11:00 pm (GMT -3)
Magnitudine: 4.8
Profondità: 10.0 km
Epicentro latitudine / longitudine: 62.37°S / 58.28°W
(South Atlantic Ocean, Antartide)Vulcano più vicino: Penguin Island (35 km / 22 mi)
Weather at epicenter at time of quake:
Overcast Clouds
-3°C (27 F), humidity: 73%, wind: 3 m/s (5 kts) from NW
Fonte dati primaria: GFZ (German Research Centre for Geosciences)Overcast Clouds
-3°C (27 F), humidity: 73%, wind: 3 m/s (5 kts) from NWStima dell'energia sismica liberata: 1 x 1012 joules (278 megawatt hours, equivalent to 239 tons of TNT) 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.
| Magnitudine | Profondità | Ubicazione | Fonte |
| M 4.8 | 10 km | South Shetland Islands, Antarctica | GFZ |
| M 5.1 | 10 km | South Shetland Islands, Antarctica | EMSC |
| M 5.1 | 8.6 km | South Shetland Islands, Antarctica | USGS |
| M 5.0 | 13 km | TFAIAS (Argentina), Antarctica | INPRES |
User reports for this quake (1)
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Frei Antarctic Base (1.6 km WSW of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / 5-10 s : They were two, one immediately after the first one. So it was the longest since the end of August. In the beginning we always feel subterranean noise. Before and after were many light earthquakes. | 2 users found this interesting.
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