Date and Time: December 5, 2023, 00:56:11 AKST (09:56:11 UTC)
Location: 25 miles South of Iliamna Volcano
Coordinates: 59.6979°N, 152.8526°W
Depth: 55.7 miles (90 km)
Overview:
The recent seismic event, registering a magnitude of 2.7, occurred in the vicinity of Iliamna Volcano in southern Alaska. As of now, the incident has not undergone review by a seismologist.
Geographic Impact:
The earthquake’s epicenter is situated approximately 31 miles northeast of Augustine Volcano, 36 miles west of Anchor Point, and 40 miles northwest of English Bay and Nanwalek. Other affected areas include Port Graham (43 miles NW), Pedro Bay (44 miles E), Seldovia (44 miles NW), Homer (46 miles W), Ninilchik (48 miles SW), Redoubt Volcano (55 miles S), Port Alsworth (61 miles SE), Kodiak (133 miles N), and Anchorage (145 miles SW).
Magnitude and Type:
- Magnitude: Ml2
- Event Type: Earthquake
Tectonic Setting:
Southern Alaska experiences seismic activity due to various tectonic features. Notably:
- Megathrust Fault: The region’s most powerful earthquakes result from the megathrust fault along the subducting Pacific and overriding North American plates.
- Wadati-Benioff Zone: Intermediate-depth seismicity occurs in this zone, extending along the Aleutian Arc, Alaska Peninsula, and Cook Inlet.
- Crustal Seismicity: Earthquakes are attributed to the faults and folds of the Cook Inlet basin, the Castle Mountain Fault, and a diffuse seismic zone between Cook Inlet and the Denali Fault.
The area’s seismic history includes significant events such as the 1964 M9.2 Great Alaska Earthquake and recent occurrences like the 2016 M7.1 Iniskin and the 2018 M7.1 Anchorage earthquakes, which resulted in notable ground shaking and structural damage.
MOST KEY POINTS
- Recent Seismic Activity: Magnitude 2.7 Earthquake near Iliamna Volcano
- A detailed overview of the recent seismic event, providing information on its magnitude, location, and depth. Explore the potential implications for the surrounding areas and the ongoing assessment by seismologists.
- Geographic Impact: Proximity to Key Volcanic and Residential Areas
- Investigate the earthquake’s epicenter in relation to nearby geological features such as Augustine Volcano and its proximity to residential areas like Anchor Point, English Bay, and Homer. Highlight the potential impact on these regions.
- Magnitude and Type Analysis: Understanding the Earthquake Characteristics
- Delve into the technical aspects of the earthquake, exploring its magnitude (Ml2) and the specific seismic event type. Provide context on how these factors contribute to the overall understanding of the incident.
- Tectonic Forces at Play: Southern Alaska’s Seismic Landscape
- Explore the tectonic setting of Southern Alaska, shedding light on the megathrust fault, Wadati-Benioff Zone, and crustal seismicity. Discuss how these geological features contribute to the frequency and intensity of earthquakes in the region.
- Historical Significance: Comparisons with Past Notable Earthquakes
- Draw parallels between the recent event and historical earthquakes in Southern Alaska, such as the 1964 Great Alaska Earthquake. Highlight any similarities or differences in magnitude, impact, and geological implications, offering a broader perspective on seismic patterns in the area.
- “Unveiling the Enigma: Inside the Mysterious Depths of Iliamna Volcano’s Recent Earthquake”
- Explore the details and mysteries surrounding the recent earthquake near Iliamna Volcano, delving into its magnitude, geographic impact, and the ongoing evaluation by seismologists. Uncover the significance of this seismic event and its potential implications for the region.
- “Tectonic Drama: Southern Alaska’s Seismic Symphony and the 2.7 Magnitude Earthquake”
- Embark on a journey through the dynamic tectonic forces shaping Southern Alaska’s seismic landscape. Gain insights into the specific geological features at play, including the megathrust fault, Wadati-Benioff Zone, and crustal seismicity. Understand the role of these forces in the recent 2.7 magnitude earthquake and their broader implications for the region.
Please note that this information is preliminary and subject to further review by seismologists.