Magnitude 6.8 – 200km NW of Attu Station, Alaska – June 22, 2017

June 5, 2017 by

USGS Event Page
2017-06-02 22:24:47 UTC
200km NW of Attu Station, Alaska
Magnitude 6.8
54.029°N   170.910°E

8.2 km depth

Seismotectonics of Alaska

USGS – “The Aleutian arc extends approximately 3,000 km from the Gulf of Alaska in the east to the Kamchatka Peninsula in the west. It marks the region where the Pacific plate subducts into the mantle beneath the North America plate. This subduction is responsible for the generation of the Aleutian Islands and the deep offshore Aleutian Trench.”



Magnitude 6.2 – 79km SSW of Acajutla, El Salvador – May 12, 2017

May 12, 2017 by

USGS Event Page
2017-05-12 10:41:26 (UTC)
79km SSW of Acajutla, El Salvador
Magnitude 6.2
Location  12.911°N   -90.056°W
Depth 10 km

Seismotectonics of the Caribbean Region and Vicinity
USGS, “Extensive diversity and complexity of tectonic regimes characterizes the perimeter of the Caribbean plate, involving no fewer than four major plates (North America, South America, Nazca, and Cocos). Since 1900, there have been many moderately sized intermediate-depth earthquakes in this region, including the September 7, 1915 M7.4 El Salvador and the October 5, 1950 M7.8 Costa Rica events.”

 

 

 

Magnitude 6.5 – 94km ENE of Visokoi Island, South Georgia and the South Sandwich Islands – May 10, 2017

May 12, 2017 by

USGS Event Page
2017-05-10 23:23:36 (UTC)
Magnitude 6.5
94km ENE of Visokoi Island, South Sandwich Islands
Location  -56.408°S  -25.764°W
Depth 10km