A magnitude 1.7 earthquake struck 45 miles NW of Tatitlek, Alaska, on November 6, 2024, at a depth of 9.9 miles. The region is characterized by complex tectonic interactions that generate seismic activity, including both shallow and intermediate-depth earthquakes. Historical contexts highlight the potential for significant ground shaking and infrastructure damage in this area.
On November 6, 2024, at 02:48:31 AKST (11:48:31 UTC), a magnitude 1.7 earthquake occurred approximately 45 miles northwest of Tatitlek, Alaska, at a depth of 9.9 miles (16 kilometers). This seismic event, which has not yet been reviewed by a seismologist, is significant for regional monitoring due to its proximity to several key locations, including Valdez, Sutton, Palmer, and Anchorage. The earthquake’s coordinates are 61.3214°N, 147.6294°W, marking it within a tectonically active region of Southern Alaska, known for its complex seismic history.
The tectonic setting of Southern Alaska is characterized by multiple sources of seismic activity, primarily due to the interactions between the subducting Pacific Plate and the North American Plate. Major earthquakes in this region, such as the 1964 Great Alaska Earthquake, result from the megathrust fault that exists in this boundary zone. In addition to shallow seismic events, intermediate-depth earthquakes occur in the Wadati-Benioff Zone, where the subducting plate descends. Southern and central Alaska’s earthquake activity also includes crustal seismicity attributed to local faults and geological structures capable of generating strong tremors, as observed in historical events.
In summary, the magnitude 1.7 earthquake near Tatitlek is a reminder of the active tectonic landscape of Southern Alaska, underscoring the importance of continuous monitoring of seismic activities. The region’s complex geology, influenced by both the Pacific and North American Plates, presents inherent risks, as evident from historical significant earthquakes. Awareness and preparedness are essential for communities residing in this seismically active area.
Original Source: earthquake.alaska.edu
