A M 7.8 quake shook the Aleutian Islands this morning. The Alaska earthquake likely occurred along the subduction interface. The Aleutian arc is no stranger to large quakes, having hosted more than 20 M 7.0+ over the past 100 years, including a nearby M 8.2 in 1938.
- Does Alaska’s magnitude-7.8 Simeonof earthquake finally close a seismic gap? - August 1, 2020
- M 4.2 in San Fernando - July 30, 2020
- Hydrated oceanic crust supports benign plate movement at subduction zones - July 23, 2020