Magnitude 2.9 - 37 miles S of Kaktovik

September 12, 2022 13:15:36 AKDT (September 12, 2022 21:15:36 UTC)
69.6257°N 144.2153°W    Depth 1.9 miles (3 km)





Tectonic Setting of the Brooks Range

Seismicity in the Brooks Range is characterized by intraplate earthquakes associated with mountain building and crustal reorganization. A broad earthquake band extends from northeast of the Brooks Range toward the Beaufort Sea. Earthquake source mechanisms comprise a mixture of strike-slip and normal faulting events, indicative of north-northwest compression and northeast extension. Together with the North Slope, this seismic zone produces a few magnitude 4-5 earthquakes per year.

Contributed by:
1Alaska Earthquake Center
2USGS National Earthquake Information Center
Learn more about magnitude types here