WEEK SEISMICITY REPORT FOR MARCH 6, 2023 TO MARCH 12, 2023
During the week of March 6, 2023, the Alaska Earthquake Center reported 1524 earthquakes within the state. The largest earthquake was magnitude 4.6 that occurred on March 10 at 15:38:59 AKST (March 11, 00:38:59 UTC), 40 miles SE of Mt. Gareloi.
Activity near the Tanaga and Takawangha volcanoes increased significantly during this week. There were 370 volcano-tectonic events ranging in magnitude from M2.0-M3.9. These volcanoes are currently at "YELLOW Alert Level ADVISORY" by the Alaska Volcano Observatory. Please see https://avo.alaska.edu for more details.
Other notable events were a M4.5 55 miles W of Burwash Landing which was followed by 77 aftershocks, a M4.4 12 miles NW of Iliamna Volcano, and a M3.8 six miles S of Wasilla that was reported felt in MatSu Borough communities and greater Anchorage area.
There were 17 icequakes detected in Prince William Sound and Icy Bay. One event was reported as felt.
NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE
Magnitude 4.6, 40 miles SE of Mt. Gareloi, March 10 15:39:00 AKST
Magnitude 4.5, 64 miles SE of Sand Point, March 7 04:12:10 AKST
Magnitude 4.5, 55 miles W of Burwash Landing, March 7 22:32:54 AKST
Magnitude 4.4, 56 miles SE of Westdahl Peak, March 5 17:59:35 AKST
Magnitude 4.4, 12 miles NW of Iliamna Volcano, March 7 19:01:47 AKST
Magnitude 3.8, 6 miles S of Wasilla, March 8 08:24:26 AKST
Magnitude 3.8, 7 miles E of Tanaga Volcano, March 8 18:50:21 AKST
Magnitude 3.7, 37 miles SE of Mt. Gareloi, March 12 03:52:32 AKDT
Magnitude 3.7, 33 miles SW of Amchitka, March 10 02:46:08 AKST
Magnitude 3.7, 2 miles S of Tanaga Volcano, March 11 10:47:10 AKST
This report was compiled by Ken Becker
The data in this report are preliminary and subject to revision. The earthquake parameters have been determined by the AEC, with supplemental data provided by the USGS National Earthquake Information Center. The data are released on the condition that none of the cooperating agencies may be held liable for any damaged resulting from its authorized or unauthorized use.
For more information on earthquakes and seismology, contact the AEC at 907-474-7320.