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M7.3 - Bristol Island, South Sandwich Islands

Magnitude:

7.3
 

Depth:

30.98 km
 

Region:

Bristol Island, South Sandwich Islands
 
 

Date-Time:

Jul 15, 2013 14:03:43 UTC
Jul 15, 2013 12:03:43 UTC-02:00 at
epicenter
 
 

Location:

-60.8679,-25.1436
 
 

Source:

USGS NEIC (WDCS-D)
 

Event ID:

usb000ief9
 
 

Distances from major cities:

  • 218 km SSE of Bristol Island, South Sandwich Islands
  • 2598 km ESE of Ushuaia, Argentina
  • 2844 km SE of Punta Arenas, Chile
  • 2854 km SE of Rio Gallegos, Argentina
  • 2236 km SE of Stanley, Falkland Islands
 
 

More maps:

 

Tectonic Summary

The July 15, 2013 Mw7.3 South Sandwich Islands earthquake occurred as a result of either east-west left-lateral or north-south right-lateral strike slip motion at shallow oceanic crustal depths. The earthquake occurred ~100km east of a complex plate triple junction between the South America, Antarctica, and Sandwich plates. The South America plate currently subducts beneath the Sandwich plate at a rate of ~13mm/yr while sliding past the Antarctica plate with left-lateral motion along the South Sandwich Fracture Zone at a rate of ~14mm/yr. Given the strike slip nature and location of the event, the earthquake likely resulted from relative motion between the South America and Antarctica plates. Several large earthquakes have occurred along this portion of the plate boundary, including events of Mw7.4 in January 2006 and Mw7.5 in October 1973.

 


This map is not currently available.
You may check this map again in a few hours if this earthquake is recent.
If the earthquake is not recent (5 days or older), no map was created due to the limited size and effect of the earthquake itself on the nearby population.

 


This map is not currently available.
You may check this map again in a few hours if this earthquake is recent.
If the earthquake is not recent (5 days or older), no map was created due to the limited size and effect of the earthquake itself on the nearby population.

 


This map is not currently available.
You may check this map again in a few hours if this earthquake is recent.
If the earthquake is not recent (5 days or older), no map was created due to the limited size and effect of the earthquake itself on the nearby population.

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